CN106351374A - Connecting node of assembled whole thick prefabricated slab unit and slab unit thereof - Google Patents
Connecting node of assembled whole thick prefabricated slab unit and slab unit thereof Download PDFInfo
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- CN106351374A CN106351374A CN201610888174.5A CN201610888174A CN106351374A CN 106351374 A CN106351374 A CN 106351374A CN 201610888174 A CN201610888174 A CN 201610888174A CN 106351374 A CN106351374 A CN 106351374A
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- Prior art keywords
- reinforcing bar
- floor slab
- precast floor
- crosspiece
- connecting node
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/023—Separate connecting devices for prefabricated floor-slabs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a connecting node of an assembled whole thick prefabricated slab. Connecting steel bars are reserved on the connecting surface of a prefabricated slab unit in the mode, the exposed parts of the connecting steel bars are ' '-shaped, and the exposed parts and the connecting surface form a closed polygon. In the connecting mode for the prefabricated slab unit and a beam or a wall, the connecting steel bars of the prefabricated slab unit are inserted with steel bars configured for the beam or the wall together at the connecting positions in a penetrating mode. Viewing from the cross section of the whole connecting node, the connecting steel bars and the steel bars configured for the beam or the wall form a single closed stirrup or a composite stirrup, and longitudinal bolt steel bars penetrate into the inner corner position of the single closed stirrup or the composite stirrup. The connecting node of the whole thick prefabricated slab unit can achieve the equivalent performance as a prefabricated slab connecting nodes and a cast-in-place concrete structure while achieving higher prefabrication rate and assembly rate. The invention further provides the whole thick prefabricated slab unit for achieving the connecting mode.
Description
Technical field
The present invention relates to prefabricated assembled concrete structure construction, the connecting node of more particularly, to prefabricated floor and
Its floor panels.
Background technology
Because assembled architecture meets the mode of production of environmental protection and energy saving, country proposes the time with 10 years about, makes dress
Join formula building account for new building ratio reach 30% developing goal, dispatch " " green building and the building industry of the Department of Science and Technology
The special 2016 annual project application guides of change " emphasis specifically notify " mention subject study content (taking passages related content): study
Prefabricated concrete structure novel connection node and its basic structure performance, the work of 8 degree of area's concrete assembling structure systems of research
Industry adaptability problem, proposes new series connecting node form, reaches and requires with cast-in-place structural equal performance.
Prefabricated floor refers to that floor is resolved into member unit is prefabricated in the factory production, scene to prefabricated components dress
Join, again prefabricated components are connected into by monolithic architecture structure by cast-in-place concrete.The globality of this floor preferably, can save mould
Plate, accelerates speed of application.There is the version of following several prefabricated concrete floor at present:
(1) use prefabricated superposed type floor construction form: after in place for the installation of prefabricated superposed type floor panels, then cast-in-place
One layer of reinforced concrete sandwich layer, post, beam and floor are linked to be an entirety.Though this assembly method good integrity can meet
Antiseismic building requires, but precast floor slab is that semi-finished product, strengthening floor slab rigidity are low, will add construction temporary support, live reinforcing bar binding
Amount is many, concreting amount is big, and the overall prefabrication rate of precast floor slab unit is extremely difficult to 60%, can only achieve existing country
The minimum standardss of prefabricated rate specified in " industrialized building evaluation criterion gb/t51129-2015 ", with real industrialized production
Also has gap, convenience, economy and the feature of environmental protection of assembling building process of construction of not bringing into play；
(2) using precast floor slab unit structural form: precast floor slab unit common at present includes prefabricated solid floor list
Unit, prefabricated hollow floor unit, precast rib composite floor plate unit etc..Described precast floor slab configures steel all in accordance with bearing requirements
Muscle, and all remain for the connection reinforcing bar of connecting node on this precast floor slab surrounding is as joint face in advance.These connect reinforcing bar
The reinforcing bar that usually precast floor slab is configured directly reserves the linear reinforcing bar being formed outside joint face, during assembling, is will be pre-
The edge of floor panels processed rides on support and arranges template or ride on beam or wall edge, forms connecting node space.Described
Precast floor slab unit joint face on connect the connection reinforcing bar of reinforcing bar and the prefabricated components being connected in connecting node space
Crisscross then join longitudinal reinforcement more together, by cast-in-place concrete, that is, respectively constitute described precast floor slab unit with adjacent
Precast floor slab unit or beam or wall connecting node, realize the integration of floor, although the integral prefabricated rate of this precast floor slab
Height, but because the connecting node of precast floor slab unit uses the framework of steel reinforcement that common reinforcement manner is constituted, not specially
Setting limits and connects the structure that is mutually shifted of reinforcing bar, and the connecting node position that to be structural system important, lead to this kind of prefabricated
The structure that floor is formed cannot be accomplished to meet the Seismic Design Requirements of " strong node, weak component " very well, causes precast floor slab list
The application of unit is restricted.
Additionally, current precast floor slab unit connecting node technology should in mixed structure, frame structure and shear wall structure
With more, but the application of plate-column structure is assembled there is not yet report using common (non-prestressed) connecting node.This is because plate
Rod structure is complicated in plate and post junction stress, and the shearing of moment of flexure maximum, floor and post junction at its slab strips on columns is maximum,
And the thickness of its floor (with respect to contignation) is less, lead to that the effective depth by curved section is less, the ratio of reinforcement is higher, post with
It is also little that the anti-impact of plate junction cuts face, and many technology need to solve.Post and plate junction are that whole plate-column structure is most important
Position and it is connected by slab strips on columns structure, slab strips on columns bar connecting must reach i, ii level connection request,
And connection of must staggering, there are more technological difficulties.Current assemble type concrete slab rod structure form has using originating from previous generation
" the integrated prestress assembled plate-column structure " of the prestressing force friction node of Yugoslavia " ims " the system eighties of recording, i.e. floor
The stiction supporting and fixing of dependence prestressing force and its generation, on post, forms prestressing force friction node form between plate and post.
In this form, the compressive stress of frictional force derives from the prestress wire of live post-stretching, the particular/special requirement connecting because of it,
The construction technology of this prestress wire tensioning is loaded down with trivial details, difficulty big, very high to the technical requirements of workmen；Additionally, node
The prestressing force purpose of tensioning is to connect needs, and the component of original assembling is created additional stress, both increased design hardly possible
Degree has influence on construction costs again；When also having using " ims " system, prestressing force friction node not only needs to meet armored concrete knot
The relevant regulation of structure, also needs to meet the requirement of " integrated prestress assembled plate-column structure technical regulation cecs52:2010 ", it is only
For association criterion code, rather than national standard, " ims " system method of attachment should there are some and ask in side light from another point of view
Inscribe or at least illustrate it is not perfect version, be not over the national enforcement technology approved；In application because scene
Difficulty of construction is greatly inapplicable industrialized construction, cost height, executes typical problem and be subject to resistance, leads to twenty or thirty year to be gone over
Application few.
Content of the invention
First purpose of the present invention is to provide a kind of connecting node being applied to whole thickness precast floor slab unit, and it is in reality
While now higher prefabricated rate and assembly rate, it is capable of precast floor slab connecting node and cast-in-place concrete structure congruency
Energy.
Second object of the present invention is to provide a kind of whole thickness precast floor slab list for realizing above-mentioned connecting node
Unit.
" whole thickness precast floor slab unit " as herein described is a kind of precast floor slab unit making in plant produced, under its plate
Surface and plate upper surface be exactly hardened structure finished surface, the thickness of precast floor slab unit be exactly floor after the completion of assembling structure thick
Degree；It is another kind of precast floor slab being different from overlapping precast floor slab.Herein (as overlapped in addition to the proprietary varieties precoated plate indicating
Precast floor slab), remaining " precast floor slab unit " is all referring to the writing a Chinese character in simplified form of " whole thickness precast floor slab unit ", remaining " precast floor slab "
All referring to writing a Chinese character in simplified form of " whole thickness precast floor slab ".
For reaching above-mentioned goal of the invention, the technical solution used in the present invention is as follows:
A kind of connecting node of assembled whole thickness precast floor slab, pre- on the joint face including precast floor slab unit and joint face
That stays connects the joint face of reinforcing bar, beam or wall and the reinforcing bar of beam or wall configuration, and in beam support or wall bearing and precast floor slab
Node company that the junction of unit pours, that precast floor slab unit and beam or wall are connected as overall cast-in-place concrete and routine
Connect arrangement of reinforcement it is characterised in that: reserved on described joint face connect reinforcing bar, the exposed parts of described connection reinforcing bar are in " Contraband " shape,
I.e. described exposed parts are bent into three sections: upper crosspiece, lower crosspiece and one connect described upper crosspiece outer end and lower crosspiece outer end
Wherein one of end even section, described upper crosspiece and lower crosspiece is the crosspiece of tension, and the length of the crosspiece of described tension is more than or waits
Length in another crosspiece；Described exposed parts constitute the polygon of closure with described joint face, in precast floor slab list
In the connecting node of unit and beam or wall, the reinforcing bar that connects of described precast floor slab unit is existed with the reinforcing bar of described beam or wall configuration
Junction is interted together, from the point of view of the cross section of whole connecting node, the described reinforcing bar connecting reinforcing bar and described beam or wall configuration
Constitute single closed stirrups or compound stirrup, at knuckle in described single closed stirrups or compound stirrup, penetrate longitudinal latch steel
Muscle.Connecting node after the completion of pouring is the concrete knot with beam form arrangement of reinforcement that precast floor slab is formed with beam support or wall bearing
The dark beam of structure or beam, precast floor slab is equivalent to be bearing on the wide dark beam of flat of connection or beam, and beam is directly supported at bearing, this
One connecting joint structure power transmission is direct, structure is simple.
A kind of connecting node of assembled whole thickness precast floor slab, pre- on the joint face including precast floor slab unit and joint face
The connection reinforcing bar staying, and pour at the plate gap of two pieces of precast floor slab units, two pieces of precast floor slab units are linked as entirety
Cast-in-place concrete and conventional node connect arrangement of reinforcement it is characterised in that: reserved on described joint face connect reinforcing bar, described company
The exposed parts connecing reinforcing bar are in " Contraband " shape, and that is, described exposed parts are bent into three sections: upper crosspiece, lower crosspiece and one connect described
The end of upper crosspiece outer end and lower crosspiece outer end connects section, and wherein one of described upper crosspiece and lower crosspiece is the crosspiece of tension, described
The length of the crosspiece of tension is more than or equal to the length of another crosspiece；Described exposed parts are closed with described joint face composition
The polygonal shape closing, in the connecting node between two pieces of described precast floor slab units, two pieces of described precast floor slab unit phases
On adjacent joint face, reserved connection reinforcing bar intermeshes at plate gap, from the point of view of the cross section of whole connecting node, two pieces of institutes
The connection reinforcing bar of the precast floor slab unit stated constitutes compound stirrup, penetrates longitudinal latch steel in the interior knuckle of described compound stirrup
Muscle.Its connecting node after the completion of pouring be equivalent to two precast floor slab element sides ribs or edge member be combined into one have multiple
Close the flat rib of width of hoop or dark beam, finally really connecting node becomes rib or internal dark beam within a monoblock floor.
In one embodiment, described lower crosspiece part or full section are imbedded in described precast floor slab unit.
The connecting node of the above-mentioned assembled of the present invention whole thickness precast floor slab includes two kinds, and one kind is precast floor slab unit and beam
Or the connecting node of wall, another kind is the connecting node between two pieces of adjacent precast floor slab units.
The present invention in the connecting node of precast floor slab unit and beam or wall, described beam support or wall bearing and prefabricated building
The connection that the junction of Slab element refers to constitute between beam support face or the joint face of wall seating plane and precast floor slab unit is used
Space in rear pouring concrete；" plate gap " described in connecting node between precast floor slab unit for the present invention refers to prefabricated building
The connection space reserved between the adjacent joint face of Slab element；The width of the width of node point connection and plate gap is all in accordance with concrete
Design requirement be determined it is desirable to the concrete pouring width be not less than 200mm.
Described joint face requires as matsurface, and requires the area of matsurface to be not less than the 80% of faying face.
Connection reinforcing bar of the present invention, is more than interconnection function in node is implemented, when it is connected with bearing has been
Anchorage effect.
In one embodiment, connection reinforcing bar of the present invention stretches out closo connection reinforcing bar, described plate for plate face
Face is stretched out closo connection reinforcing bar and is directly formed by the bending of described precast floor slab unit original plate face reinforcing bar；Described plate face steel
The first paragraph that muscle stretches out is upper crosspiece, described upper crosspiece after reaching specific length under be bent to described end and connect section, institute
The end stated connects section and returns again to bending after reaching specific length and anchors into joint face bottom, constitutes described lower crosspiece, described lower horizontal stroke
The part that section anchors in precast floor slab unit is folded upward in the side rib or edge member of described precast floor slab unit again, and with
Upper crosspiece anchors into part and forms closed stirrups form；Plate face described in whole is stretched out closo and is connected reinforcing bar in the same plane.
In second embodiment, connection reinforcing bar of the present invention goes out closo for plate end stretch and connects reinforcing bar, described
Plate end stretch goes out closo connection reinforcing bar and is directly formed by the bending of described precast floor slab unit original reinforcement；Described plate bottom
The first paragraph that reinforcing bar stretches out is described lower crosspiece, described lower crosspiece reach specific length after upward direction be bent to described
End even section, described end connects section and returns again to bending after reaching specific length and anchors into joint face top, constitutes described upper crosspiece, institute
State upper crosspiece straight line anchor in precast floor slab unit or the side rib in described precast floor slab unit or edge member inner bending with
Crosspiece is closed into stirrup shape；Plate end stretch described in whole goes out closo and connects reinforcing bar in the same plane.
In the third embodiment, connection reinforcing bar of the present invention is additional connection stirrup, described additional connection
Stirrup is the connection reinforcing bar of other increased stirrup shape, and its at least individual limb is embedded in side rib or edge member in precast floor slab
Interior, exposed parts are " Contraband " shape；Described stirrup can be rectangle, trapezoidal or polygon, and described lower crosspiece is wholly embedded into institute
In the precast floor slab unit stated.
Plate bottom straight line is also stretched out on the described joint face of precast floor slab unit and connects reinforcing bar, described plate bottom straight line connects
Reinforcing bar is directly to be stretched out by the original reinforcement of precast floor slab unit or side rib bottom reinforcing bar, and revealed section is linear.
Longitudinal latch reinforcing bar of the present invention refers to the longitudinal reinforcement being inserted in knuckle in connection reinforcing bar of rear colligation, its
Can effectively limit and connect being mutually shifted of reinforcing bar.
The connecting node of above two assembled of the present invention whole thickness precast floor slab is passed through to change precast floor slab unit connection steel
The shape of muscle, so that it forms transverse projection with the connection reinforcing bar of another component being connected in described connecting node is closing
Stirrup shape, cooperatively constitutes the concrete of multiple mutually perpendicular crosses or t word space configuration in conjunction with longitudinal latch reinforcing bar
Framework of steel reinforcement, under the collective effect of concrete, can be more effectively prevented from connected reinforcing bar relative movement, connecting node
A dark beam of xoncrete structure with beam form arrangement of reinforcement or beam it have been actually formed, it being capable of the company of significantly enhancing after the completion of pouring
Connect the intensity of node so as to load and the effect from all directions can be born effectively, its bearing capacity exceedes prefabricated building
Slab element body, thus meeting the Seismic Design Requirements of " strong node, weak structure ", and it is solid that precast floor slab unit can be made to form periphery
The one-way slabss connecing or two-way slab structural system.
Described additional connection stirrup is that member stress needs or in order to strengthen the structural strength of connecting node further
Configuration；As stress needs its quantity and the position of concrete setting can calculate determination as the case may be, overall with connecting node
Structure stress meets pertinent regulations and requires to be defined；For example, the assembly node of flat slab structure, it is locally near pillar support
Additional connection stirrup is set up in place, and calculating by slab strips on columns shear strength in anchor needs its quantity and concrete configuration length range.
During as configured to strengthen the structural strength of connecting node further, the setting of additional connection stirrup is mainly according to component weight
The property wanted and arrange, so that concrete structured beam that connecting node formed or the intensity of the dark beam of xoncrete structure is further enhanced.
Above-mentioned " edge member ", refer at prefabricated solid slab cell edges setting, there is one fixed width formations
Point, it is configured with up and down and is respectively no less than the straight-through reinforcing bar of a parallel edge it is simply that the edge strip of solid Slab element.The present invention
Precast floor slab unit one or more joint faces can adopt step joint face, that is, along vertical plane shape joint face lower edge
Length direction cross out one block of step wing plate.If provided, with step wing plate, then edge member includes this step tab portions.
Connection reinforcing steel bars exposed part of the present invention is in be bent into three sections for connecting reinforcing bar, upper crosspiece therein and lower horizontal stroke
The length stretched out of section can the length stretched out of equal or unequal, tension when unequal reinforcing bar crosspiece will be grown, upper crosspiece with
Lower crosspiece stretch out can parallel also can be not parallel, the end of outer end connection section is simultaneously connected with upper crosspiece and lower crosspiece, three sections of reinforcing bars with
In one plane.The length that described upper crosspiece is stretched out with lower crosspiece can be equal or unequal, is because that hardened structure is by curved structure
Part, its upper and lower reinforcing bar another for a tension is pressurized, tension reinforcement need anchorage length need to anchor than compressive reinforcement long
Degree will be grown, in order to more preferably utilize this characteristic and can be unequal with length；Described upper crosspiece is stretched out with lower crosspiece can be parallel
Also can be not parallel, it is because whether reinforcing bar is carried step wing plate to be affected by the joint face of connected links, when component to be connected is
During the joint face with step wing plate, lower crosspiece is subject to step wing plate to stop needs upward stretching out；Upper crosspiece and the length of lower crosspiece
Spend different and lower crosspiece horizontally or obliquely, making end join section must and then change, and joint face has vertical joint face again and is provided with
The joint face of step wing plate, thus make three sections of connection reinforcing steel bars exposed and described joint face constitutes rectangle, trapezoidal and polygonal
Shape；As in order to construction in later period without other support installation form and using band step joint face, lower crosspiece may need to
On tiltedly go out and carry out affixed connection above step wing plate so as to can reach, in order to realize affixed connection, upper crosspiece extension elongation will
Meet the length requirement of tension connection, and the length that lower crosspiece stretches out meets pressurized connection request, such upper crosspiece and lower crosspiece
May different length.The length that can certainly all need using tension, make the equal length that upper crosspiece stretched out with lower crosspiece.
The connection reinforcing bar of the present invention is according to national regulation " Code for design of concrete structures gb50010-2010 " and national row
The requirement of industry standard " technical specification for concrete structures of high-rise building jgj3-2010 ", the end even connection more than or equal to 90 ° for the section bending
Reinforcing bar is affixed and during tension anchoring projected length, must meet anchoring projected length >=0.6labOr >=0.6lae, labFor longitudinal direction
The basic anchorage length (i.e. rectilinear anchorage length) of tension reinforcement, laeFor tension reinforcement antidetonation anchorage length (i.e. linear
Anti- reinforcing bar shakes anchorage length)；When for hinged or when reinforcing bar is pressurized, anchoring projected length >=0.4l must be metabOr >=0.4lae.By
This is visible, and the connection reinforcing bar of the present invention is either affixed or hinged using " Contraband " shape, and its anchorage length is all reduced.
The connecting node of the assembled whole thickness precast floor slab of the present invention can be applicable to plate-column structure.When being applied to plate-column structure
When middle, the wide-flat beam of the side rib of described cast-in-place concrete and described precast floor slab unit or edge member composition or dark beam
Overall width is more than or equal to the vertical structure post corresponding hem width degree of supporting, and the connection section of whole assembled whole thickness precast floor slab
The arrangement of reinforcement of point reaches the slab strips on columns distributed steel requirement of sheet-pile.
Specifically, the prefabricated edges of boards rib of composition connecting node or the bottom longitudinal reinforcement of edge member and rear pouring concrete
The bottom reinforcement bars of the latch reinforcing bar at plate gap should meet the Maximum bending moment of opposing slab strips on columns, and the plate face of node stretches out connection steel
Muscle, plate end stretch go out to connect reinforcing bar and additional connection stirrup should meet the maximum shear stress of opposing slab strips on columns and require and resist laterally
The stress that effect produces requires.In plate-column structure, the science of the connecting node of this assembled whole thickness precast floor slab is:
(1) at pouring concrete plate gap, position is the less place of whole slab strips on columns stress afterwards, the horizontal tensile stress of node at this
Can use original plate negative reinforcement, the plate that is, plate face reinforcing bar is bent into stretch out plate face stretch out connection reinforcing bar or plate end stretch go out
Connect reinforcing bar, just can meet requirement；(2) the maximum bottom reinforcement bars of stress moment of flexure wholly or largely can be prefabricated in the factory and join
Put and deformed bar can be adopted so that reinforcement location accurately, can guarantee that reinforcing bar effect effective depth, also can be to pre-
Stress reinforcing bar carries out accurate tensioning construction；(3) the maximum node of shearing and post side junction can be attached by encrypting
Plus additional connection stirrup ensures that its safe and reliable and span centre can rationally reduce connection stirrup, not only save but also safety；(4) node
After connection, the plate on its both sides can see continuous integral slab as, and the longitudinal direction of node and post can also be realized affixed；(5) pass through to close
Avoided at the same section of reinforcing bar even using elongated reinforcing bar at the whole thickness precast floor slab unit combination of reason or reserved rear pouring concrete
Connect problem；(6) site operation is simple, only a small amount of latch reinforcing bar of colligation and the work of rear pouring concrete.
The connecting node of described assembled whole thickness precast floor slab is applied to connection precast floor slab unit common at present, only
Will prefabricated four joint faces of floor and connect that reinforcing bar is consistent with the feature of the present invention to achieve that equal attachment structure, including in advance
Solid floor unit processed, precast rib composite floor plate unit, prefabricated two-way rib-shaped structure floor panels, prefabricated unidirectional rib-shaped structure
Floor panels, prefabricated ribbed (box-shaped) hollow-core construction floor panels, and the prestressing force precast floor slab of above-mentioned floor type.When pre-
When floor panels processed are rib structure plate or cored slab structure, plate gap connecting node constitutes girder structure；When precast floor slab unit is
During solid slab structure, plate gap connecting node constitutes dark girder construction；The species change of plate is when precast rib composite floor plate unit
Packing material and lower floor's steel mesh crushed stone concrete layer are cancelled, are exactly prefabricated two-way rib-shaped structure floor panels, when precast rib is multiple
Close the packing material of floor panels and lower floor's steel mesh crushed stone concrete layer is cancelled and cancelled the rib in a direction, but retain side rib
Joint face it is simply that prefabricated unidirectional rib-shaped structure floor panels, when the packing material of precast rib composite floor plate unit cancel but under
Layer steel mesh crushed stone concrete layer retain or when using armored concrete thin layer instead, be exactly prefabricated ribbed (box-shaped) hollow-core construction floor list
Unit；When prefabricated unit plate is in plant produced, the lower rebar of plate all or using precast floor slab during deformed bar is exactly
Prestressing force precast floor slab.
It is interpreted as from another point of view: as long as the joint face of precast floor slab unit and its connection reinforcing bar adopt assembled of the present invention
The connecting node of whole thickness precast floor slab requires to produce, and the inner structure form of plate is not limited by form.
The connecting node of assembled of the present invention whole thickness precast floor slab is applied to frame structure, mixed structure and shear wall structure
Assembling；Connecting node between precast floor slab unit applies also for the assembling of flat slab structure.In practical application, connect
The particular number of the connection reinforcing bar in node and longitudinal latch reinforcing bar should be configured according to actual demand and be designed.For example,
When the cast-in-place concrete of node point connection is overlapped with Vierendeel girder or shear wall, its internal arrangement of reinforcement should meet Vierendeel girder or shear wall
Force request.In flat slab structure, connecting node supports vertical structure post simultaneously, now, the joining of whole connecting node
Muscle needs to reach the slab strips on columns distributed steel requirement of arch without beam.
Preferably, the plate bottom straight line connecting in reinforcing bar of described precast floor slab unit connects reinforcing bar, in described precast floor slab
In connecting node between unit, on adjacent joint face, reserved straight line bottom muscle is taken using colligation overlap joint, one side at plate gap
Connect welding or be mechanically connected；To reduce connecting length when using overlap joint welding or mechanical connection, improve prefabricated rate.
The above-mentioned design of two kinds of connecting nodes and construction mainly comprise the following steps:
(1) required according to concrete architectural engineering and construction organization, the size of precast floor slab unit, shape and arrangement of reinforcement are carried out
Calculate and design；
(2) design and the additional bar calculating connecting node, such as additional connection stirrup and longitudinal direction latch reinforcing bar；
(3) design and calculate the concrete structured beam of connecting node or the width of the dark beam of xoncrete structure；
(4) precoated plate production and construction figure and assembled in situ figure are drawn in design；
(5) precast floor slab unit is produced, transported and lifted；
(6) reinforcing bar in colligation, connecting node junction or plate gap, and according to design, related set aside pre-embedded structure is installed
Part；
(7) pour the rear pouring concrete of connecting node.
Second object of the present invention is to provide a kind of whole thickness precast floor slab unit for realizing above-mentioned connecting node.
A kind of precast floor slab unit of the connecting node for realizing above-mentioned whole thickness precast floor slab, it is to have upper and lower two
The armored concrete flat cube prefabricated components of individual surface and four joint faces, described joint face is reserved with connection reinforcing bar,
It is characterized in that: the exposed parts of described connection reinforcing bar are in " Contraband " shape, and that is, described connection reinforcing steel bars exposed part is bent into three sections:
Upper crosspiece, lower crosspiece and one connect described upper crosspiece outer end and the end of lower crosspiece outer end and connect section, described upper crosspiece and lower crosspiece
Wherein one be tension crosspiece, the length of the crosspiece of described tension is more than or equal to the length of another crosspiece；Described
Exposed parts constitute the polygonal shape of closure with described joint face；Plate bottom straight line is also stretched out on joint face and connects reinforcing bar,
It is directly to be stretched out by the original reinforcement of precast floor slab unit or side rib bottom reinforcing bar that described plate bottom straight line connects reinforcing bar, exposes
Section is linear.
In one embodiment, described lower crosspiece part or full section are imbedded in described precast floor slab unit.
Described precast floor slab unit has four joint faces, and its four faces type and reserved connection reinforcing bar can respectively not
Identical, also can be partly identical or all identical.
Described joint face requires as matsurface, and requires the area of matsurface to be not less than the 80% of faying face.
In one embodiment, connection reinforcing bar of the present invention stretches out closo connection reinforcing bar, described plate for plate face
Face is stretched out closo connection reinforcing bar and is directly formed by the bending of described precast floor slab unit original plate face reinforcing bar；Described plate face steel
The first paragraph that muscle stretches out is upper crosspiece, described upper crosspiece after reaching specific length under be bent to described end and connect section, institute
The end stated connects section and returns again to bending after reaching specific length and anchors into joint face bottom, constitutes described lower crosspiece, described lower horizontal stroke
The part that section anchors in precast floor slab unit is folded upward in the side rib or edge member of described precast floor slab unit again, and with
Upper crosspiece anchors into part and forms closed stirrups form；Closo described in whole connects reinforcing bar in the same plane.
In second embodiment, connection reinforcing bar of the present invention goes out closo for plate end stretch and connects reinforcing bar, described
Plate end stretch goes out closo connection reinforcing bar and is directly formed by the bending of described precast floor slab unit original reinforcement；Described plate bottom
The first paragraph that reinforcing bar stretches out is described lower crosspiece, described lower crosspiece reach specific length after upward direction be bent to described
End even section, described end connects section and returns again to bending after reaching specific length and anchors into joint face top, constitutes described upper crosspiece, institute
State upper crosspiece straight line to anchor in precast floor slab unit or be closed into stirrup shape in side rib or edge member inner bending with lower crosspiece；Whole
Closo described in root connects reinforcing bar in the same plane.
In the third embodiment, connection reinforcing bar of the present invention is additional connection stirrup, described additional connection
Stirrup is the connection reinforcing bar of other increased stirrup shape, and its at least one limb is embedded in the side rib in described precast floor slab unit
Or in edge member, exposed parts are " Contraband " shape；Described stirrup can be rectangle, trapezoidal or polygon, described lower crosspiece
It is wholly embedded in described precast floor slab unit.
The form connecting reinforcing bar can be wanted according to the concrete shape of precast floor slab unit joint face and connection anchorage length of steel bar
Ask decision；As supported installation form may need using band step joint face, lower crosspiece for construction in later period without other
Upward go out, can reach and carry out affixed connection above step wing plate, in order to realize affixed connection, upper crosspiece extension elongation
Meet the length requirement of tension connection and length that lower crosspiece stretches out meets pressurized connection request, upper crosspiece and lower crosspiece can
Can different length.
Described additional connection stirrup is that member stress needs or in order to strengthen the structural strength of connecting node further
Configuration；As stress needs its quantity and the position of concrete setting can calculate determination as the case may be, overall with connecting node
Structure stress meets pertinent regulations and requires to be defined；For example, the floor prefabricated unit of the assembling of flat slab structure, it locally exists
Additional connection stirrup is set up in place near pillar support, and calculating by slab strips on columns shear strength in anchor needs its quantity and specifically join
Put extent length.During as configured to strengthen the structural strength of connecting node further, the setting of additional connection stirrup is main
It is to be arranged according to Component Importance, so that the concrete structured beam of connecting node formation or the intensity of the dark beam of xoncrete structure is obtained
Further enhance.
The described connection reinforcing bar of invention is according to national regulation " gb50010-2010 " and national sector standard " jgj3-2010 "
Requirement, end even section bending more than or equal to 90 ° or oblique connection reinforcing bar anchoring projected length for affixed, reinforcing bar tension
When, anchoring projected length >=0.6l must be metabOr >=0.6lae, labBasic anchorage length (i.e. straight line for longitudinal tensile reinforcing bar
The anchorage length of shape), laeFor tension reinforcement antidetonation anchorage length (i.e. linear antidetonation anchorage length)；When being subject to for hinged or reinforcing bar
During pressure, anchoring projected length >=0.4l must be metabOr >=0.4lae.It can be seen that, the connection reinforcing bar of the present invention is either affixed
Or hinged, its anchorage length is all reduced.The quantity connecting reinforcing bar of the present invention and position all should be according to country's marks
Accurate and concrete structure design requires to be designed it is ensured that joints meet concrete engineering degree of safety requires.
When described precast floor slab unit is in for slab column system, wherein constitute the side of the joint face of slab strips on columns
Rib or edge member increase width, and configure corresponding longitudinal reinforcement.Side rib or edge member width are more than or equal to connected
The corresponding width dimensions of post half, the bottom longitudinal reinforcement of prefabricated edges of boards rib or edge member and the bottom reinforcement bars of latch reinforcing bar
The Maximum bending moment of opposing slab strips on columns should be met, the stirrup formula of node connects reinforcing bar and additional connection stirrup meets opposing
The stress that the maximum shear stress of slab strips on columns requires and opposing transversely acting produces requires.
Above-mentioned precast floor slab unit can also make following improvement: one or more joint faces of described precast floor slab unit
Using the joint face of step, cross out one block of step wing plate along the length direction of vertical plane shape joint face lower edge.When
When precast floor slab unit and beam support or wall bearing or another piece of precast floor slab unit do connecting node, described step wing plate can be with
Beam support or wall bearing abut against, its step wing plate is concordant with beam support face or wall seating plane collectively form junction pour sky
Between bottom surface；Or precast floor slab unit is connected step wing plate with another piece of precast floor slab unit and abuts against, constitute the plate of groove type
Gap casting space.Constructor directly can collectively form junction space to step wing plate is concordant with beam support face or wall seating plane
Or the casting space casting concrete of described groove type connecting plate gap, and horizontal shuttering need not be separately installed, thus effectively simplifying
Work progress, improves efficiency of construction.The thickness of described joint face step wing plate should be arranged in suitable scope: when it is blocked up
When it is possible to can affect on joint face connect reinforcing bar effect effective depth and direction；When it is excessively thin, then rigidity is relatively low,
It is likely difficult to bear the weight of rear pouring concrete.In one preferred embodiment, the thickness of described joint face step exists
In the range of 30～50mm.
Described precast floor slab unit can be common at present precast floor slab unit, such as prefabricated solid floor unit, prefabricated
Close rib composite floor plate unit, prefabricated two-way rib-shaped structure floor panels, prefabricated unidirectional rib-shaped structure floor panels, prefabricated box-shaped are empty
Core structure floor panels, and the prestressing force precast floor slab of above-mentioned floor type.Filling when precast rib composite floor plate unit
Material and lower floor's steel wire crushed stone concrete thin layer are cancelled, are exactly prefabricated two-way rib-shaped structure floor panels, when precast rib is combined
The packing material of floor panels and lower floor's steel wire crushed stone concrete thin layer are cancelled and are cancelled the rib in a direction, but retain side rib
Joint face it is simply that prefabricated unidirectional rib-shaped structure floor panels, when the packing material of precast rib composite floor plate unit cancel but under
Layer steel wire crushed stone concrete thin layer retain or when using armored concrete thin layer instead, be exactly prefabricated ribbed hollow (box-shaped is hollow) structure
Floor panels；, in plant produced, the lower rebar of plate is completely or partially using prefabricated during deformed bar for prefabricated unit plate
Floor just becomes prestressing force precast floor slab.
The method have the advantages that
(1) realize assembled whole thickness precast floor slab and there is the node structure with cast-in-place concrete structure equal performance: this
The bright novel connection node construction proposing a kind of whole thickness precast floor slab connection of assembled, to precast floor slab unit joint face
The reinforcing bar that connects improve so that the arrangement of reinforcement setting more science of the connecting node of assembled whole thickness precast floor slab and rationally,
The building structure that the precast floor slab of the present invention is assembled with connecting joint structure, the rear pouring concrete part of its connecting node are equivalent to
The post-cast strip of integral cast-in-situ xoncrete structure, enables connecting node to reach and cast-in-place concrete structure equal performance,
(2) node good integrity, anti-seismic performance is good: the present invention can achieve that in whole connecting node, arrangement of reinforcement can exceed non-section
Point area, after being really a dark beam of xoncrete structure with beam form arrangement of reinforcement or beam, and connecting node after the completion of connecting node
Pouring concrete intensity is not less than former connecting elements intensity, is formed and is equivalent to cast-in-place concrete structure, its shearing resistance, resistance to compression, tension are held
Load power is better than other sections of component, and safety stock is high, accomplishes the Structural Design Requirement of " strong node, weak component ", anti-seismic performance is good
Good；
(3) suitability is wide, can be applicable in plate-column structure, and there is current technology can not the reasonable structure of analogy and warp
Ji property: the connecting joint structure of the present invention, not only can apply to framework, shear wall structure and mixed structure, be also applied to
Plate-column structure, when being applied to plate-column structure, the scene that the power transmission of node structure is directly simple, construction is simply only a small amount of
Reinforcing bar and rear pouring concrete, do not have the integrated prestress assembled plate-column structure construction of the prestressing force friction node of " ims " system
Complicated live compressor wire tensioning works and connects " side effect " additional stress that prestressing force brings to structure；Additionally,
In construction and design process, only defer to the pertinent regulations of reinforced concrete structure, reduce the complexity of design, decrease
The workload of designer.The present invention when using prestressing force precast floor slab, effectively can relatively reduce plate thickness, reduce and scratch
Degree, can save screed-coat again, save workload and quantities simultaneously moreover it is possible to mitigate weight, simple site operation further
Enable prestressed structure again, thus realizing economy, these be all current technology (include cast-in-place concrete plate-column structure) no
Method analogy.
(4) can make full use of the mechanical property of material, save building material and safe: the precast slab unit of the present invention
Prestressed structure can be adopted, adopt pre-tensioning system to produce prestressing force prefabricated unit plate in factory, so that tension stress is controlled precisely,
Prefabricated unit is made to obtain reasonable disposition in terms of arrangement of reinforcement, and its deformed bar tensioning of the overlapping precoated plate of prior art application
Can thickness of slab is relatively thin to be affected by restricting when precoated plate produces；The floor that precast slab unit is put together can reach two-way slab and four
The affixed structure in side, this plate span centre bottom reinforcement bars make using the affixed version of presstressed reinforcing steel and edges of boards bearing that plate is this to be subject to
Curved component ideal structure form, material property also can maximum play, thus reducing the thickness of floor to greatest extent, mitigating certainly
Weight, minimizing amount of reinforcement；Deformed bar is that pre-tensioning system construction, reinforcing bar and concrete binding are firm, safer reliability；
(5) enable easy construction, save time, efficiency high: the precast floor slab of the present invention and its connect reinforcing bar all pre- in factory
System completes, and live reinforcing work amount is little.Additionally, when the joint face of precast floor slab adopts the joint face of step, without template
Support, pouring concrete one-off construction is complete between achievable precast floor slab and after precast floor slab and the connection of beam support or wall bearing
Become, reduce cast-in-place concrete amount and wet trade amount, after the completion of floor construction face smooth and requirement absolute altitude can be reached, without
Screed-coat can be carried out fine fitment work, have that construction link is few, convenient, speed soon, efficiency high；
(6) prefabricated rate and assembly rate are high: the prefabricated rate of precast floor slab unit of the present invention is high, and the prefabricated rate of floor member is more than
80%, the highest standard of the prefabricated rate of floor that " gb/t51129-2015 " requires can be reached；
(7) reserve connect reinforcing bar be arranged on minimizing connecting length on the basis of there is convenience and motility: the present invention
Connection reinforcing bar either affixed or hinged, its anchorage length is all reduced, saves assembly space, separately additional connection reinforcing bar
Can be in the motility configuration as needed of any joint face；
(8) there is good economy and generalization: having connecting node mentioned above because of the present invention can be fully sharp
With the mechanical property of material, save building material, easy construction, save time, efficiency high, thus having fine economic benefit；Prefabricated
Rate and assembly rate height, site operation are simply easy to industrialized production；Range of application is general extensively have by property and economical,
Safe and reliable, could can be acceptable to the market and then just can have the probability of popularization.
Brief description
Below in conjunction with Figure of description and specific embodiment, the present invention is further described.
Fig. 1 is the top view of the precast floor slab unit of the embodiment of the present invention 1；
Fig. 2 is the perspective diagram of the precast floor slab unit of the embodiment of the present invention 1；
Fig. 3 (a) is the a-a profile of Fig. 1, the form schematic diagram of the connection reinforcing bar that (b) stretches out for (a) plate；
Fig. 4 (a) is the b-b profile of Fig. 1, and (b) stretches out plate face for (a) plate and stretch out the form signal that closo connects reinforcing bar
Figure；
Fig. 5 (a) is the c-c profile of Fig. 1, the form schematic diagram of the connection reinforcing bar that (b) stretches out for (a) plate；
Fig. 6 (a) is the d-d profile of Fig. 1, and (b) stretches out plate face for (a) plate and stretch out the form signal that closo connects reinforcing bar
Figure；
Fig. 7 is the top view of the prefabricated solid Slab element of the embodiment of the present invention 2；
Fig. 8 is the perspective view of the prefabricated solid Slab element of the embodiment of the present invention 2；
Fig. 9 is the e-e profile of Fig. 7；
Figure 10 is the f-f profile of Fig. 7；
Figure 11 is the assembling schematic diagram of the whole thickness precast floor slab of the embodiment of the present invention 3；
Figure 12 is the profile of Figure 11 connecting node 1a
Figure 13 is the exploded view of Figure 12；
Figure 14 is the profile of Figure 11 connecting node 1b；
Figure 15 is the exploded view of Figure 14；
Figure 16 is the perspective view of Figure 11 connecting node 1c and 1d；
Figure 17 is the profile of Figure 11 connecting node 1c；
Figure 18 is the exploded view of Figure 17；
Figure 19 is the profile of Figure 11 connecting node 1d；
Figure 20 is the exploded view of Figure 19；
Figure 21 is the perspective view of Figure 11 connecting node 2a and 2b；
Figure 22 is the profile of Figure 11 connecting node 2a；
Figure 23 (a) is the exploded view of Figure 22, and (b) is the form schematic diagram of transverse steel in (a)；
Figure 24 is the profile of Figure 11 connecting node 2b；
Figure 25 (a) is the exploded view of Figure 24, and (b) is the form schematic diagram of transverse steel in (a)；
Figure 26 is the perspective view of node 2c and 2d
Figure 27 is the profile of Figure 11 connecting node 2c；
Figure 28 is the exploded view of Figure 27；
Figure 29 is the profile of Figure 11 connecting node 2d；
Figure 30 is the exploded view of Figure 29；
Figure 31 is 2b connecting node profile during the prefabricated solid Slab element phase splicing of embodiment 4；
Figure 32 (a) is the exploded view of Figure 31, and (b) is the structural representation of transverse steel in (a)；
Figure 33 (a) is the profile of embodiment 5 connecting node 2b, and (b) is the structural representation of transverse steel in (a)；
Figure 34 (a) is the a-a profile with the precast floor slab unit of Fig. 1 for the prefabricated hollow floor top view, and (b) is (a) plate
The form schematic diagram of the connection reinforcing bar stretching out；
Figure 35 (a) is the c-c profile with the precast floor slab unit of Fig. 1 for the prefabricated two-way rib floor top view, and (b) is (a)
The form schematic diagram of the connection reinforcing bar that plate stretches out.
Reference: 1- post；Lightweight filler in 2- composite plate；3- beam；The prefabricated solid Slab element of 4-；5- precast hollow
The cavity of floor；6- carries wall；The rib of slab with ribbed precast floor slab for the 7-；8- connects reinforcing bar；10- precast floor slab bottom arrangement of reinforcement；11-
Additional connection stirrup；12- longitudinal direction latch reinforcing bar；14- step wing plate；15- band ribbed precast floor slab bottom wire mesh concrete is thin
Layer；16-- slab strips on columns bottom reinforcement bars；17- joint face；18- cast-in-place concrete；L- cast-in-place concrete width；la1- plate face reinforcing bar
Bearing anchorage length when hinged, la2Bearing anchorage length when-plate face reinforcing bar is affixed, la3- precast floor slab unit lower rebar
Bearing anchorage length, la4The connecting length of-precast floor slab unit lower rebar；lbThe rib width of-ribbed plate, lb1- ribbed plate
Side rib width prefabricated；H- precast floor slab element thickness；h1- joint face step thicknesses；b1、b2、b3、b4- precast rib composite plate；
The wide-flat beam of the side rib of b1- cast-in-place concrete and described precast floor slab unit or edge member composition or the overall width of dark beam.
Specific embodiment
Embodiment 1- precast rib is combined Slab element
Preferably: precast rib composite floor plate unit has four joint faces, in order to more preferably illustrate to understand its connection of joint face
Depending on face form is according to connecting object and requirement, illustrated with four different embodiments of joint face.
Fig. 1～6 are a kind of structure of the compound Slab element of precast rib of the present invention.
As shown in figs. 1 to 6, illustrated on the basis of the direction orientation of Fig. 1, it is to have that this precast rib is combined Slab element
The flat rectangular body prefabricated components of upper and lower two surface and four joint faces, have some vertical and horizontal arrangements inside it
The rib of slab 7 with ribbed precast floor slab, at every rib of slab configure two rib lower rebar and stretch out joint face, be in line shape
With the precast floor slab bottom arrangement of reinforcement 10 of ribbed, and a rib upper reinforcement stretching out joint face；Space between rib of slab is provided with multiple
Lightweight filler 2 in plywood.Four joint faces that this precast rib is combined Slab element are all matsurface, and the face of its matsurface
Amass 80% not less than faying face.
All it is reserved with plate face on four joint faces of the compound Slab element of precast rib and stretch out the company that exposed parts are in " Contraband " shape
Connect reinforcing bar 8 and precast floor slab bottom arrangement of reinforcement 10, but four sides are again different, concrete condition is: the left side of plate is in order to connect side
Wall bearing, be hinged support connect, plate face stretch out closo connect reinforcing steel bars exposed part upper crosspiece plate face parallel with lower crosspiece, from
It is shorter that vertical joint face 17 stretches out revealed section, end even section be vertical connect upper crosspiece and lower crosspiece, plate face stretches out closo even
Connect the exposed parts of reinforcing bar and joint face forms tetragon (as Fig. 3 and Fig. 4 left end).The right of plate is in order to be applied to plate-column structure
Slab strips on columns connect, the connection reinforcing bar of configuration has plate face to stretch out closo to connect reinforcing bar and additional connection stirrup 11, wherein attached
Plus connect stirrup 11 and configure in the lower semisection of this joint face, i.e. near the part of support column, its left side exceedes half and anchors into be widened
Side rib, and with plate face stretch out closo be connected spacing of reinforcement setting；The joint face 17 with step wing plate 14 for this joint face, plate face
Stretch out closo and connect the parallel plate face of exposed parts upper crosspiece of reinforcing bar and additional connection stirrup 11, lower crosspiece from step wing plate 14
Outside upper angle is upward to stretch out, holds even section to be vertical connection upper crosspiece and lower crosspiece, and closo connects reinforcing steel bars exposed part and is connected
Face formed closure pentagon, and set widen while rib, widen while rib and step wing plate 14 in be embedded with some slab strips on columns bottom reinforcement barses
16 (as Fig. 3 and Fig. 4 right-hand members).The top of plate is two pieces of prefabricated unit splicing edges, the joint face with step wing plate 14 for this joint face
17, plate face is stretched out closo and is connected the parallel plate face of exposed parts upper crosspiece of reinforcing bar, lower crosspiece from step wing plate 14 step surface
Between upward stretch out, hold even section be vertical connect upper crosspiece and lower crosspiece, plate face stretches out the exposed parts that closo connects reinforcing bar
With joint face formed closure be also pentagon (as Fig. 5 and Fig. 6 right-hand member).The following of plate is connected with beam for two boards simultaneously,
And require to realize affixed, the joint face 17 with step wing plate 14 for this joint face, plate face stretch out closo connect reinforcing bar expose portion
Point parallel plate face of upper crosspiece, lower crosspiece from step wing plate 14 end overhang but not parallel plate face, in order to realize solid upper crosspiece root
Lengthen according to needs, thus cross-section long under its upper crosspiece ratio, and even section is to tilt to connect upper crosspiece and lower crosspiece to connect end, and plate face is stretched out
Closo connects the exposed parts of reinforcing bar and joint face forms recessed hexagon (as Fig. 5 and Fig. 6 left end).
The step joint face i.e. joint face 17 with step wing plate 14 of this close rib composite plate, that is, along described joint face lower edge
Length direction cross out a joint face step wing plate 14, the high h of this joint face step wing plate 141=35mm,
As shown in figures 4-6, plate face stretch out closo to connect reinforcing bar is that to join reinforcing bar by original plate on precast floor slab unit curved
Folding forms.
The prefabricated solid Slab element of embodiment 2-
Fig. 7～10 are the structure of a kind of prefabricated solid Slab element of the present invention.
As shown in Fig. 7～10, this prefabricated solid Slab element is the flat length with upper and lower two surfaces and four joint faces
Cube prefabricated components, its every side has edge member, component bottom muscle to be furnished with precast floor slab bottom arrangement of reinforcement 10, and its four joint faces are all
For matsurface, and the area of matsurface is not less than the 80% of faying face.
Connection reinforcing bar and precast floor slab bottom arrangement of reinforcement 10 are all reserved with four joint faces of prefabricated solid Slab element；Four
Different concrete condition is again on side: the left side of plate, in order to connect abutment wall bearing, is that hinged support connects, closo connects reinforcing bar
Upper crosspiece plate face parallel with lower crosspiece, to stretch out revealed section from vertical joint face 17 shorter, even section is vertical to connect upper horizontal stroke at end
Section and lower crosspiece, closo connects the exposed parts of reinforcing bar and joint face forms tetragon (as Fig. 9 left end).The right of plate in order to
The slab strips on columns being applied to plate-column structure connects, and the reinforcing bar that connects of configuration has reserve on joint face, exposed parts in " Contraband " shape
Connection reinforcing bar 8 and additional connection stirrup 11, wherein additional connect stirrup 11 configure this joint face lower semisection, i.e. near
The part of platen, its left side is exceeded half and anchors into the side rib widened, and connection reinforcing bar 8 interval setting stretched out with joint face；Should
Joint face 17 is vertical plane shape, connects reinforcing bar 8 and the additional exposed parts upper crosspiece connecting stirrup 11 and lower crosspiece parallel-plate
Even section is vertical connection upper crosspiece and lower crosspiece for face, end；Closo connects reinforcing steel bars exposed section and forms rectangle with joint face, and arranges
It is widened edge member, widens and be embedded with some slab strips on columns bottom reinforcement barses 16 (as Fig. 9 right-hand member) in edge member.The top of plate is
Two prefabricated unit splicings, the joint face 17 with step wing plate 14 for this joint face, is the center of an integral slab structure at this
Plate face reinforcing bar, its connection reinforcing bar is not had to be additional connection stirrup 11, the additional connection parallel plate face of stirrup 11 exposed parts upper crosspiece,
Lower crosspiece is upward in the middle of step wing plate 14 upper surface to be stretched out, holds even section to be vertical connection upper crosspiece and lower crosspiece, additional company
The exposed parts of box cupling muscle 11 form the pentagon (as Figure 10 right-hand member) of closure with joint face.Plate following for two boards simultaneously
It is connected with beam, and requires to realize affixed, the joint face 17 with step wing plate 14 for this joint face, exposed parts are in the connection of " Contraband " shape
The parallel plate face of exposed parts upper crosspiece of reinforcing bar 8, lower crosspiece overhang from the not parallel plate face in step wing plate 14 end, solid in order to realize
Upper crosspiece lengthens as desired, thus cross-section cross-section longer than under thereon, and even section is to tilt to connect upper crosspiece and lower crosspiece to connect end,
Connect the exposed parts of reinforcing bar 8 and joint face forms the recessed hexagon (as Figure 10 left end) of closure.
The step joint face i.e. joint face 17 with step wing plate 14 of this closely knit heart whole thickness precoated plate, that is, along described connection
The length direction of face lower edge crosses out step wing plate 14, the high h of this joint face step wing plate 141=35mm,
As shown in Fig. 9～10, exposed parts are in the connection reinforcing bar 8 of " Contraband " shape is by original plate face on precast floor slab unit
Negative reinforcement bending forms.
Implement the species applicability statement of whole thickness precast floor slab
The case study on implementation 1 that this explanation is enumerated and case study on implementation 2 are preferred version；As long as four side joint faces of floor and company
Connect reinforcing bar to reserve joint face by the form of the present invention and connect reinforcing bar, the present invention is applied to various whole thickness precast floor slabs: such as pre-
Solid floor unit (shown in Fig. 7～9) processed, precast rib composite floor plate unit, prefabricated two-way rib-shaped structure floor panels (Figure 35
Shown), prefabricated unidirectional rib-shaped structure floor panels, prefabricated box-shaped hollow structure floor panels (shown in Figure 34), and above-mentioned building
The prestressing force precast floor slab of plate type.It is specifically when light filling material in the composite plate of precast rib composite floor plate unit
Material 2 and band ribbed precast floor slab bottom wire mesh concrete membrane 15 are cancelled, are exactly prefabricated two-way rib-shaped structure floor panels (figure
Shown in 35)；When lightweight filler 2 and band ribbed precast floor slab bottom steel wire in the composite plate of precast rib composite floor plate unit
Net concrete membrane 15 is cancelled and is cancelled the rib in a direction, but retains side rib joint face it is simply that prefabricated unidirectional rib-shaped structure building
Slab element；When in the composite plate of precast rib composite floor plate unit, lightweight filler 2 is cancelled but carried ribbed precast floor slab bottom
When steel-wire-net reinforced concrete thin layer 15 retains, be exactly prefabricated box-shaped hollow structure floor panels (Fig. 3 (b) shown in)；Prefabricated unit plate
In plant produced, precast floor slab bottom arrangement of reinforcement 10, slab strips on columns bottom reinforcement bars 16 be all or part of adopt high-strength deformed steel bar,
And the precast floor slab applying during prestressing force just becomes prestressing force precast floor slab.
The connecting node of embodiment 3- assembled whole thickness precast floor slab
Figure 11～30 show the connecting node of the assembled of the present invention whole thickness precast floor slab.
Figure 11 is the assembling schematic diagram of whole thickness precast floor slab, including close rib composite plate b of four blocks of precast floor slabs1、b2、b3、b4,
Vertical member post 1 and carrying wall 6, horizontal member beam 3；Specifically, unit b1With b2Between be stitched together, its connecting node
For 2c and 2d, constitute one piece of integral prefabricated floor, b1And b2With b4Node 2a and 2b connecting and composing wide-flat beam formula is bearing in post 1
On, b1And b2The node being connected with carrying wall 6 is 1a and 1b, its connection is equally applicable to beam, b2With b3The section that beam 3 connects simultaneously
Point 1c and 1d, its connection are equally applicable to wall；They connect and compose precoated plate assembly connection structural system.
Figure 12～13 show that precast rib is combined Slab element 1 and carries the structure of connecting node 1a of wall 6.Concrete and
Speech, connecting node 1a includes making the connection reinforcing bar in " Contraband " shape for the exposed parts that close rib is combined setting on the joint face of Slab element 1
8th, carry the reinforcing bar of wall 6 configuration, and pour in the junction carrying wall 6 bearing and precast floor slab unit, by precast floor slab
Unit and beam or wall are connected as overall cast-in-place concrete 18 and conventional connecting node arrangement of reinforcement, and wherein, described regular node is joined
Muscle includes longitudinal reinforcement (shown in Figure 13).The intensity of cast-in-place concrete should than the vertical member intensity at node place high one-level, and adopt
With slightly expanded concrete, to prevent the cracking at node.
On precast floor slab unit joint face, reserved connection reinforcing bar 8 is " Contraband " shape, in precast floor slab unit b2With carrying wall 6
Connecting node in, from the point of view of the cross section of whole connecting node, what plate face was stretched out connects reinforcing bar 8 and the arrangement of reinforcement structure carrying wall 6
Become closure tetragon, the interior knuckle of described closure tetragon reinforcing bar penetrates four longitudinal latch reinforcing bars 12, constitutes beam type steel
Muscles and bones frame.Connecting node after the completion of its casting concrete is the coagulation with beam form arrangement of reinforcement that precast floor slab is formed with beam support
Soil structure wide-flat beam (shown in Figure 13), the simple node of structure.
Figure 14～15 show that precast rib is combined Slab element b2Structure with connecting node 1b carrying wall 6 at rib of slab.
Specifically, connecting node 1b includes the compound Slab element b of precast rib2Joint face on the plate of setting stretch out plate face and stretch out closure
Type connects reinforcing bar, precast floor slab bottom arrangement of reinforcement 10, carries wall 6 wall configuration reinforcement, and is carrying wall 6 bearing and precast floor slab list
The junction of unit is pouring, precast floor slab unit and beam or wall are connected as overall cast-in-place concrete 18 and routine connection section
Point arrangement of reinforcement, wherein, described regular node arrangement of reinforcement includes longitudinal reinforcement (shown in Figure 15).The intensity of cast-in-place concrete should be than node place
The high one-level of vertical member intensity, and adopt slightly expanded concrete, to prevent the cracking at node.
On precast floor slab unit joint face, reserved connection reinforcing bar is " Contraband " shape and forms closure with described joint face
Four shape structures, the precast floor slab bottom arrangement of reinforcement 10 with ribbed is linear, and this plate face is stretched out, exposed parts are in the company of " Contraband " shape
Together with connecing reinforcing bar 8 with the reinforcing bar carrying wall 6 and interting in junction, from the point of view of the cross section of whole connecting node, connect reinforcing bar 8 with
The arrangement of reinforcement carrying wall 6 constitutes closure tetragon, penetrates four longitudinal latch steel in the interior knuckle of described closure tetragon reinforcing bar
Muscle 12, constitutes beam type framework of steel reinforcement.Connecting node after the completion of its casting concrete be precast floor slab with beam support formed with
The flat dark beam (shown in Figure 14) of xoncrete structure width of beam form arrangement of reinforcement, the simple node of structure.
Figure 16～18 show that two pieces of precast ribs are combined Slab element b2、b3Structure with connecting node 1c of beam 3 simultaneously.
Precast rib is combined Slab element b2、b3Joint face on all using the joint face 17 of step, that is, along the length of described joint face lower edge
Degree direction crosses out a step wing plate 14, the high h of this step wing plate 141=35mm.Specifically, connecting node 1c includes supporting
Two pieces of precast ribs on beam 3 bearing are combined Slab element b2And b3, the exposed parts on joint face be in " Contraband " shape connection reinforcing bar
8 and the reinforcing bar of beam 3 configuration and its longitudinal reinforcement (as shown in figure 18), and in beam 3 bearing and two pieces of precast rib composite plate lists
Unit plate gap at pour, by precast rib be combined Slab element b2、b3It is linked as overall cast-in-place concrete 18 with beam 3.Cast-in-place coagulation
The intensity of soil should than the vertical member intensity at node place high one-level, and adopt slightly expanded concrete, to prevent the cracking at node.
Two pieces of precast floor slab unit b2、b3The exposed parts stretching out on adjacent joint face are in that the connection reinforcing bar 8 of " Contraband " shape exists
Staggered composition compound stirrup, (as shown in Figure 16,17) at plate gap, the reinforcing bar of beam 3 is interspersed in connecting node, from connecting node
From the point of view of cross section, the reinforcing bar 8 that connects of whole node constitutes compound stirrup, the infolding of this compound stirrup with the stirrup adhesion of tendon and muscle after injury of beam 3
The cableway of four longitudinal latch reinforcing bars 12 and beam 3 is penetrated, it can limit the phase connecting reinforcing bar 8 and the stirrup of beam 3 in angle
Mutually move, constitute beam type framework of steel reinforcement；Connecting node after the completion of its casting concrete is that precast floor slab is formed with beam support
Armored concrete t beam structure (Figure 16,17 shown in).Figure 16, Figure 19～20 show that two pieces of precast ribs are combined Slab element 1 and
The structure of connecting node 1d of beam 3.Precast rib is combined Slab element b2、b3Joint face on all using the joint face 17 of step,
Cross out step wing plate 14 along the length direction of described joint face lower edge, the high h of this step wing plate 141=35mm.Concrete and
Speech, two pieces of precast ribs that connecting node 1c includes being bearing on beam 3 bearing are combined Slab element b2And b3, and its on joint face
Plate stretches out plate face and stretches out closo connection reinforcing bar, the precast floor slab bottom arrangement of reinforcement 10 with ribbed, the reinforcing bar of beam 3 configuration and its indulge
To reinforcing bar (shown in Figure 20), and beam 3 bearing and two pieces of precast ribs be combined pouring at the plate gap of Slab element, by precast
Rib is combined Slab element b2、b3It is linked as overall cast-in-place concrete 18 with beam 3.The intensity of cast-in-place concrete should be more vertical than node place
The high one-level of component strength, and adopt slightly expanded concrete, to prevent the cracking at node.
Two pieces of precast floor slab unit b2、b3Adjacent joint face upper plate stretches out plate face and stretches out closo connection reinforcing bar in plate gap
Place is staggered to constitute compound stirrup, (as shown in Figure 16,19), and the stirrup of beam 3 is interspersed in connecting node, transversal from connecting node
From the point of view of face, the reinforcing bar 8 that connects of whole node constitutes compound stirrup with the stirrup adhesion of tendon and muscle after injury of beam 3, in the interior knuckle of this compound stirrup
Penetrate the cableway of four longitudinal latch reinforcing bars 12 and beam 3, it can limit the mutual shifting connecting reinforcing bar 8 and the stirrup of beam 3
Dynamic, constitute beam type framework of steel reinforcement；Connecting node after the completion of its casting concrete is the reinforcing bar that precast floor slab is formed with beam support
Concrete t beam structure (Figure 16,19 shown in).The precast floor slab bottom arrangement of reinforcement 10 of precast floor slab unit anchors into Liang Chu.
Figure 21～23 show that precast rib is combined Slab element b2And b4Between the structure of connecting node 2a and with post even
The situation (shown in Figure 21) connecing, is a kind of slab strips on columns connecting node of plate-column structure, including the joint face of precast floor slab unit
Precast rib is combined Slab element b2And b4Joint face on all using the joint face of step, that is, along the length of described joint face lower edge
Degree direction crosses out step wing plate 14, the high h of this joint face step wing plate 141=40mm, precast rib is combined Slab element b2And b4
Side rib bottom and joint face step wing plate 14 in longitudinally reserved on the slab strips on columns bottom reinforcement bars 16 of configuration and joint face plate
The connection reinforcing bar 8 that exposed parts are in " Contraband " shape and additional connection stirrup 11 and the plate in two pieces of precast floor slab units are stretched out in face
Pouring at gap, two pieces of precast floor slab units are linked as overall cast-in-place concrete 18, regular node arrangement of reinforcement is included in embedded board
Longitudinal reinforcement and longitudinal latch reinforcing bar 12 (shown in Figure 23).
On precast floor slab unit joint face, reserved connection reinforcing bar has exposed parts to be in the connection reinforcing bar 8 of " Contraband " shape and add
Connect stirrup 11, exposed parts are bent into three sections: the parallel plate face of upper crosspiece is stretched out, lower crosspiece from step wing plate 14 outside upper angle upwards
Tiltedly stretch out, hold even section to be that vertically connection upper crosspiece and lower crosspiece, exposing of connection reinforcing bar 8 connect reinforcing bar and joint face formation closure
Pentagon (shown in Figure 23)；On two pieces of precast floor slab unit joint faces, reserved connection reinforcing bar intermeshes, from whole at plate gap
From the point of view of the cross section of individual connecting node, the exposed parts of two precast floor slab units are in the compound envelope of connection reinforcing bar composition for " Contraband " shape
Close stirrup, the interior knuckle of described compound closure stirrup penetrates four longitudinal latch reinforcing bars 12.It can limit two pieces in advance
The connection reinforcing bar 8 of floor panels processed and being mutually shifted of additional connection stirrup 11, constitute beam type framework of steel reinforcement；Its casting concrete
After the completion of connecting node be the wide-flat beam (Figure 21,22 shown in) being bearing on post, i.e. slab strips on columns alleged by plate-column structure.
Figure 24～25 show that precast rib is combined Slab element b2And b4Between the structure of connecting node 2b, plate-column structure
Slab strips on columns connecting node, including precast floor slab unit joint face precast rib be combined Slab element b2And b4Joint face on
All using the joint face 17 of step, cross out step wing plate 14 along the length direction of described joint face lower edge, this connection
The high 40mm of face step wing plate 14, precast rib is combined Slab element b2And b4Side rib bottom and joint face step wing plate 14 in longitudinally
On the slab strips on columns bottom reinforcement bars 16 of configuration and joint face, reserved plate stretches out plate face and stretches out closo connection reinforcing bar and additional company
Box cupling muscle 11 and side rib bottom configuration 10；Pouring at the plate gap of two pieces of precast floor slab units, by two pieces of precast floor slab lists
Unit is linked as overall cast-in-place concrete 18, and regular node arrangement of reinforcement includes longitudinal reinforcement and longitudinal latch reinforcing bar 12 in embedded board
(shown in Figure 25).
On precast floor slab unit joint face, reserved connection reinforcing bar has exposed parts to be in the connection reinforcing bar 8 of " Contraband " shape and add
Connect stirrup 11, exposed parts are bent into three sections: the parallel plate face of upper crosspiece is stretched out, exterior angle is upwards from step wing plate 14 for lower crosspiece
Tiltedly stretch out, hold even section to be vertical to connect upper crosspiece and lower crosspiece, expose connection reinforcing bar and formed with joint face and close pentagon (Figure 25
Shown)；On two pieces of precast floor slab unit joint faces, reserved connection reinforcing bar intermeshes, from whole connecting node at plate gap
From the point of view of cross section, the exposed parts of two precast floor slab units are in the connection reinforcing bar composition compound closure stirrup for " Contraband " shape, in institute
Four longitudinal latch reinforcing bars 12 are penetrated in the interior knuckle of the compound closure stirrup stated.It can limit two pieces of precast floor slab units
Connect reinforcing bar 8 and additional connect being mutually shifted of stirrup 11, constitute beam type framework of steel reinforcement, the connection after the completion of its casting concrete
Node is comparable to be bearing in wide-flat beam on post (Figure 21,24 shown in), the i.e. slab strips on columns of plate-column structure.
As shown in figure 21, the wide-flat beam of the side rib of cast-in-place concrete and described precast floor slab unit or edge member composition
Or the overall width b1 of dark beam is more than or equal to the vertical structure post corresponding hem width degree b of supporting.
When for plate-column structure, its slab strips on columns bottom reinforcement bars 16 should stagger 2a and 2b node shown in Figure 21～25
Connect, present case is that the node left side adopts two prefabricated unit plate b1And b2Splicing, and only one of which prefabricated unit plate on the right of node
b4, using straight-through slab strips on columns bottom reinforcement bars 16, be connected directly between pillar support, thus be avoided that reinforcing bar same place connects (as schemed
Shown in 11).
2b node shown in Figure 33, is in the prefabricated building described in the lower crosspiece full section embedment of the connection reinforcing bar for " Contraband " shape at it
Situation in Slab element, remaining above-mentioned 2b node is essentially identical, and simply latch reinforcing bar becomes one.
Figure 26～28 show that precast rib is combined Slab element b1And b2Between splicing node 2c structure.Including prefabricated
The joint face precast rib of floor panels is combined on the joint face of Slab element b1 and b2 all using the joint face 17 of step, i.e. edge
The length direction of described joint face lower edge crosses out step wing plate 14, the high h of this joint face step wing plate 141=35mm, prefabricated
Close rib is combined Slab element b1And b2Side rib bottom and joint face step wing plate 14 in longitudinal configuration precast floor slab bottom arrangement of reinforcement 10
The connection reinforcing bar 8 reserved, that exposed parts are in " Contraband " shape with joint face；Pour at the plate gap of two pieces of precast floor slab units
, two pieces of precast floor slab units are linked as overall cast-in-place concrete 18, regular node arrangement of reinforcement includes the longitudinal steel in embedded board
Muscle, longitudinal latch reinforcing bar 12 (shown in Figure 28) of rear colligation.
On precast floor slab unit joint face, reserved connection reinforcing steel bars exposed part is in be bent into three sections for " Contraband " shape reinforcing bar: on
The parallel plate face of crosspiece is stretched out, lower crosspiece middle from step wing plate 14 is stretched out obliquely, hold even section to be vertical connection upper crosspiece
Expose connection reinforcing bar with lower crosspiece, " Contraband " shape and joint face forms closure pentagon (shown in Figure 28)；Two pieces of precast floor slab units
On joint face, reserved connection reinforcing bar intermeshes at plate gap, from the point of view of the cross section of whole connecting node, two precast floor slabs
The connection reinforcing bar of unit constitutes compound closure stirrup (shown in Figure 27), penetrates four in the interior knuckle of described compound closure stirrup
Root longitudinal direction latch reinforcing bar 12.It can limit being mutually shifted of the connection reinforcing bar 8 of two pieces of precast floor slab units, constitutes beam type reinforcing bar
Skeleton, the connecting node after the completion of its casting concrete is to widen rib (Figure 26,27 shown in) within suitable one piece of integral slab.
Figure 29～30 show that precast rib is combined Slab element b1And b2Between splicing node 2d structure.Including prefabricated
The joint face precast rib of floor panels is combined Slab element b1And b2Joint face on all using the joint face 17 of step, i.e. edge
The length direction of described joint face lower edge crosses out step wing plate 14, the high h of this joint face step wing plate 141=35mm, prefabricated
Close rib is combined Slab element b1And b2Side rib bottom and joint face step wing plate 14 in longitudinal configuration precast floor slab bottom arrangement of reinforcement 10
With reserved connection reinforcing bar 8 on joint face and precast floor slab bottom arrangement of reinforcement 10；Pour at the plate gap of two pieces of precast floor slab units
Building, two pieces of precast floor slab units are linked as overall cast-in-place concrete 18, regular node arrangement of reinforcement includes the longitudinal direction in embedded board
Reinforcing bar, longitudinal latch reinforcing bar 12 (shown in Figure 30) of rear colligation.
On precast floor slab unit joint face, reserved connection reinforcing steel bars exposed part is in be " Contraband " shape, is bent into three sections: upper horizontal stroke
Duan Pinghang plate face is stretched out, lower crosspiece stretches out obliquely, holds even section to be horizontal stroke vertical connection from step wing plate 14 upper surface middle
Section and lower crosspiece, " Contraband " shape expose connection reinforcing bar and joint face formation closure pentagon (shown in Figure 30)；Two pieces of precast floor slab lists
On first joint face, reserved connection reinforcing bar intermeshes at plate gap, from the point of view of the cross section of whole connecting node, two prefabricated buildings
The connection reinforcing bar of Slab element constitutes compound closure stirrup (shown in Figure 29), penetrates in the interior knuckle of described compound closure stirrup
Four longitudinal latch reinforcing bars 12.It can limit being mutually shifted of the connection reinforcing bar of two pieces of precast floor slab units, constitutes beam type steel
Muscles and bones frame, the connecting node after the completion of its casting concrete is comparable to widen rib (Figure 26,29 institutes within one piece of integral slab
Show).
Connecting node between the prefabricated solid Slab element of embodiment 4-
Figure 31～32 show the connecting node between two prefabricated solid Slab element 4 of Fig. 8～10.This connecting node is suitable for
Slab strips on columns in plate-column structure connects.
This connecting node includes two pieces of adjacent prefabricated solid Slab element 4 and the company between prefabricated solid Slab element 4
Connect the structure of node.The slab strips on columns connecting node of plate-column structure, including the prefabricated solid floor of joint face of precast floor slab unit
The joint face of Slab element 4 all using vertical plane joint face 17, on the post of the edge member bottom of prefabricated solid Slab element 4 configuration
On strip bottom reinforcement bars 16 and joint face reserved plate stretch out plate face stretch out closo connect reinforcing bar and additional connection stirrup 11, with
And precast floor slab bottom arrangement of reinforcement 10；Pouring at the plate gap of two pieces of precast floor slab units, two pieces of precast floor slab units are linked as
Overall cast-in-place concrete 18, regular node arrangement of reinforcement includes longitudinal reinforcement and longitudinal latch reinforcing bar 12 (Figure 32 institute in embedded board
Show).
On precast floor slab unit joint face, reserved connection reinforcing bar has exposed parts is in for " Contraband " shape, and exposed parts are in connect
Reinforcing bar is bent into three sections: upper crosspiece plate face parallel with lower crosspiece is stretched out, holds even section to be vertical connection upper crosspiece and lower crosspiece, " Contraband "
Shape exposes connection reinforcing bar and forms closed rectangular (shown in Figure 31) with joint face；Reserved company on two pieces of precast floor slab unit joint faces
Connect reinforcing bar to intermesh at plate gap, from the point of view of the cross section of whole connecting node, the connection reinforcing bar structure of two precast floor slab units
Become compound closure stirrup, the upper interior knuckle of described compound closure stirrup penetrates two longitudinal latch reinforcing bars 12, bottoms and joins
There are four slab strips on columns bottom reinforcement barses 16.It can limit the connection reinforcing bar of two pieces of precast floor slab units and additional connection stirrup 11
Be mutually shifted, constitute beam type framework of steel reinforcement, the connecting node after the completion of its casting concrete is comparable to be bearing on post wide
Flat beam (shown in Figure 31).
Connecting node shown in Figure 31～32 and connecting node 2b shown in Figure 24～25 and structure similar, its main region
It is not: the joint face 17 of step is adopted on the joint face of precast floor slab unit in the node of Figure 24～25, that is, along described
The length direction of joint face lower edge crosses out step wing plate 14, and eight slab strips on columns bottom reinforcement barses 16 be all layed in prefabricated
Floor panels and the inside of step wing plate 14 structure.In connecting joint structure shown in Figure 31～32, joint face does not set
Step wing plate, and part slab strips on columns bottom reinforcement bars 16 carries out colligation at the construction field (site).Connecting node shown in Figure 31～32
In structure, the lashing location of slab strips on columns bottom reinforcement bars 16 is more controlled, more effectively can utilize reinforcing bar, but in construction
Need support shuttering more loaded down with trivial details to water the cast-in-place concrete at node, therefore step.In the design, specifically adopt which kind of shape
Formula should be analyzed according to concrete engineering and determine.
When for plate-column structure, its slab strips on columns bottom reinforcement bars 16 should stagger connection node shown in Figure 31～33,
Present case is not set step wing plate between connecting node, and the slab strips on columns bottom reinforcement bars 16 of this part is connected to post using straight-through
Bearing, thus is avoided that reinforcing bar same place connects.
In the above-described embodiment, the plate of precast floor slab unit joins the quantity of reinforcing bar according to plate stressing conditions and its structure shape
Formula, is specifically designed by pertinent regulations.As when node precast floor slab unit be close rib composite plate when, its arrangement of reinforcement, rib width
Degree lbAnd side rib width prefabricated l of ribbed plateb1All should be designed by the requirement of " jgj/t275-2013 ".
When the slab strips on columns that node is applied to plate-column structure connects (as node 2a, 2b and the embodiment 4 of embodiment 3),
Slab strips on columns bottom reinforcement bars 16 and plate are joined reinforcing bar and must be designed by the requirement of pertinent regulations and arch without beam.
In the node structure of embodiment 3 and 4, the form and the length that connect reinforcing bar that precast floor slab unit joint face stretches out
Degree should be according to the Bar Anchorage projection more than or equal to 90 degree to bending in specification " gb50010-2010 " and " gb50011-2010 "
The requirement of length is designed.When plate face reinforcing bar is hinged, bearing anchorage length la1≥0.4labOr la1≥0.4lea(meet anti-
Shake requires), and across bearing centrage；When plate face reinforcing bar is affixed, bearing anchorage length la2≥0.6labOr la2≥0.6lea.
Bearing anchorage length l of precast floor slab bottom arrangement of reinforcement 10a3≥0.4labOr la3≥0.4leaOr 10 times of bar diameters for welding,
And across bearing centrage.The connecting length l of precast floor slab unit bottom arrangement of reinforcementa4It is that 10 times of reinforcing bars are straight when using single-sided welding
Footpath.In order to convenient construction and casting concrete need, rear pouring concrete width l answers >=200mm.
The design of the connecting node of embodiment 3 and embodiment 4 and construction mainly comprise the following steps:
(1) required according to concrete architectural engineering and construction organization, the size of precast floor slab unit, shape and arrangement of reinforcement are carried out
Calculate and design；
(2) design and the additional hooping calculating connecting node, such as additional connection stirrup and longitudinal direction latch reinforcing bar；
(3) design and calculate the concrete structured beam of connecting node or the width of the dark beam of xoncrete structure；
(4) precast floor slab unit is produced, transported and lifted；
(5) colligation, the reinforcing bar at welding node, and according to design, related set aside pre-embedded component is installed；
(6) pour the rear pouring concrete of connecting node.
Embodiment 5
The structure of the connecting node of embodiment 5 is substantially the same manner as Example 3, and its difference is, connecting node 2b
Plate face stretches out the exposed parts of closo and joint face forms the tetragon (as shown in figure 33) of closure, and it is in the connection of " Contraband " shape
In the precast floor slab unit described in lower crosspiece full section embedment of reinforcing bar, and latch reinforcing bar is changed into one.
Implement the precast floor slab kind class declaration that the connecting node of assembled whole thickness precast floor slab is suitable for
Simply preferred version cited hereinabove；Only the form of the present invention pressed by four side joint faces of floor and connection reinforcing bar
Reserved design and Prefabrication (shown in Fig. 2 and Fig. 8), and carry out construction assembling by the present invention, the node of the present invention is applied to respectively
Plant whole thickness precast floor slab: such as prefabricated solid floor unit, precast rib composite floor plate unit, prefabricated two-way rib-shaped structure floor
Unit, prefabricated unidirectional rib-shaped structure floor panels, prefabricated ribbed hollow-core construction floor panels, and the pre- of above-mentioned floor type should
Power precast floor slab.It is specifically when packing material 2 and the band ribbed precast floor slab bottom of precast rib composite floor plate unit
Steel-wire-net reinforced concrete thin layer 15 is cancelled, is exactly prefabricated two-way rib-shaped structure floor panels (shown in Figure 35)；When precast rib is combined
The packing material 2 of floor panels and band ribbed precast floor slab bottom wire mesh concrete membrane 15 are cancelled and are cancelled a direction
Rib, but retain side rib joint face it is simply that prefabricated unidirectional rib-shaped structure floor panels；When filling out of precast rib composite floor plate unit
Fill material 2 cancel but carry ribbed precast floor slab bottom wire mesh concrete membrane 15 retain when, be exactly prefabricated ribbed hollow-core construction
Floor panels (shown in Figure 35)；Prefabricated unit plate in plant produced, precast floor slab bottom arrangement of reinforcement 10, slab strips on columns bottom reinforcement bars
16 all or part of using screw-thread steel and the precast floor slab that applies during prestressing force just becomes prestressing force precast floor slab.
It is above-mentioned that but embodiments of the present invention are not limited by the above for the preferred embodiment for the present invention, other
Any spirit without departing from the present invention and the change made under principle, modification, replacement, combine, simplify, all should be equivalent
Substitute mode, be included within protection scope of the present invention.
Claims (11)
1. a kind of connecting node of assembled whole thickness precast floor slab, reserved on the joint face including precast floor slab unit and joint face
The reinforcing bar connecting reinforcing bar, the joint face of beam or wall and beam or wall configuration, and in beam support or wall bearing and precast floor slab list
That the junction of unit pours, precast floor slab unit and beam or wall are connected as overall cast-in-place concrete and the node of routine is connected
Arrangement of reinforcement it is characterised in that: reserved on described joint face connect reinforcing bar, the exposed parts of described connection reinforcing bar are in " Contraband " shape, that is,
Described exposed parts are bent into three sections: upper crosspiece, lower crosspiece and one connect described upper crosspiece outer end and lower crosspiece outer end
Wherein one of end even section, described upper crosspiece and lower crosspiece is the crosspiece of tension, and the length of the crosspiece of described tension is more than or waits
Length in another crosspiece；Described exposed parts constitute the polygon of closure with described joint face, in precast floor slab list
In the connecting node of unit and beam or wall, the reinforcing bar that connects of described precast floor slab unit is existed with the reinforcing bar of described beam or wall configuration
Junction is interted together, from the point of view of the cross section of whole connecting node, the described reinforcing bar connecting reinforcing bar and described beam or wall configuration
Constitute single closed stirrups or compound stirrup, at knuckle in described single closed stirrups or compound stirrup, penetrate longitudinal latch steel
Muscle.
2. a kind of connecting node of assembled whole thickness precast floor slab, reserved on the joint face including precast floor slab unit and joint face
Connection reinforcing bar, and pour at the plate gap of two pieces of precast floor slab units, two pieces of precast floor slab units are linked as overall
Cast-in-place concrete and conventional node connect arrangement of reinforcement it is characterised in that: reserved on described joint face connect reinforcing bar, described connection
The exposed parts of reinforcing bar are in " Contraband " shape, and that is, described exposed parts are bent into three sections: upper crosspiece, lower crosspiece and one connect on described
The end of crosspiece outer end and lower crosspiece outer end connects section, and wherein one of described upper crosspiece and lower crosspiece is the crosspiece of tension, described is subject to
The length of the crosspiece drawing is more than or equal to the length of another crosspiece；Described exposed parts constitute closure with described joint face
Polygonal shape, in the connecting node between two pieces of described precast floor slab units, two pieces of described precast floor slab units are adjacent
Joint face on reserved connection reinforcing bar intermesh at plate gap, from the point of view of the cross section of whole connecting node, described in two pieces
Precast floor slab unit connection reinforcing bar constitute compound stirrup, the interior knuckle of described compound stirrup penetrates longitudinal latch steel
Muscle.
3. assembled according to claim 1 and 2 whole thickness precast floor slab connecting node it is characterised in that: under described
In precast floor slab unit described in crosspiece part or full section embedment.
4. assembled according to claim 1 and 2 whole thickness precast floor slab connecting node it is characterised in that: described company
Connect reinforcing bar and stretch out closo connection reinforcing bar for plate face, described plate face is stretched out closo and connected reinforcing bar directly by described precast floor slab list
Unit's original plate face reinforcing bar bending forms；The first paragraph that described plate face reinforcing bar stretches out is upper crosspiece, and described upper crosspiece is reaching
It is bent to described end under backward to specific length and connects section, described end connects section and returns again to bending after reaching specific length and anchors into
Joint face bottom, constitutes described lower crosspiece, and described lower crosspiece anchors into part in precast floor slab unit in described precast floor slab
It is folded upward in the side rib of unit or edge member again, and anchors into part with upper crosspiece forming closed stirrups form；Described in whole
Plate face stretch out closo connect reinforcing bar in the same plane.
5. assembled according to claim 1 and 2 whole thickness precast floor slab connecting node it is characterised in that: described company
Connecing reinforcing bar is additional connection stirrup, and described additional connection stirrup is the connection reinforcing bar of other increased stirrup shape, and it is at least
Individual limb is had to be embedded in side rib or edge member in precast floor slab, described stirrup can be rectangle, trapezoidal or polygon.
6. assembled according to claim 1 and 2 whole thickness precast floor slab connecting node it is characterised in that: described dress
The connecting node joining formula whole thickness precast floor slab when being applied in plate-column structure, described cast-in-place concrete and described prefabricated building
The overall width of the wide-flat beam of the side rib of Slab element or edge member composition or dark beam is more than or equal to the vertical structure post phase of supporting
Corresponding sides width, and the arrangement of reinforcement of the connecting node of entirely described assembled whole thickness precast floor slab reaches the slab strips on columns of sheet-pile and joins
Muscle requires.
7. a kind of prefabricated building of the connecting node for realizing the whole thickness precast floor slab described in any one in claim 1～6
Slab element, it is the armored concrete flat cube prefabricated components with upper and lower two surfaces and four joint faces, described company
Be reserved with junction connect reinforcing bar it is characterised in that: described connection reinforcing bar exposed parts be in " Contraband " shape, i.e. described connection
Reinforcing steel bars exposed part is bent into three sections: upper crosspiece, lower crosspiece and one connect the end of described upper crosspiece outer end and lower crosspiece outer end
Wherein one of even section, described upper crosspiece and lower crosspiece is the crosspiece of tension, and the length of the crosspiece of described tension is more than or equal to
The length of another crosspiece；Described exposed parts constitute the polygonal shape of closure with described joint face.
8. according to claim 7 whole thickness precast floor slab connecting node precast floor slab unit it is characterised in that: described
Lower crosspiece part or the described precast floor slab unit of full section embedment in.
9. according to claim 8 whole thickness precast floor slab connecting node precast floor slab unit it is characterised in that: described
Connection reinforcing bar for plate face stretch out closo connect reinforcing bar, described plate face stretch out closo connect reinforcing bar directly by described prefabricated building
The bending of Slab element original plate face reinforcing bar forms；The first paragraph that described plate face reinforcing bar stretches out is upper crosspiece, described upper crosspiece
After reaching specific length under be bent to described end and connect section, described end connects section and returns again to bend after reaching specific length
Anchor into joint face bottom, constitute described lower crosspiece, described lower crosspiece anchors into part in precast floor slab unit pre- described in side
It is folded upward in the side rib of floor panels processed or edge member again, and anchors into part with upper crosspiece forming closed stirrups form；Whole
Closo described in root connects reinforcing bar in the same plane.
10. according to claim 9 whole thickness precast floor slab connecting node precast floor slab unit it is characterised in that: institute
The connection reinforcing bar stated is additional connection stirrup, and described additional connection stirrup is the connection reinforcing bar of other increased stirrup shape,
Its at least one limb is embedded in side rib or the edge member in described precast floor slab unit.
The precast floor slab unit of 11. connecting nodes of whole thickness precast floor slab according to any one in claim 7～10,
It is characterized in that: one or more joint faces of described precast floor slab unit adopt the joint face of step, that is, along vertical plane
The length direction of shape joint face lower edge crosses out one block of step wing plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565675X | 2016-07-15 | ||
| CN201610565675 | 2016-07-15 |
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| CN107035045A (en) * | 2017-06-02 | 2017-08-11 | 吉林建筑大学 | A kind of precast concrete bidirectional hollow plate and preparation method thereof |
| CN107503459A (en) * | 2017-08-30 | 2017-12-22 | 刘祥锦 | A kind of plate-column structure assembling system and its floor prefabricated components and connecting node |
| CN107975185A (en) * | 2017-12-01 | 2018-05-01 | 沈阳建筑大学 | Concealed beam formula connects full precast concrete harden structure, making and assembly method |
| CN108343184A (en) * | 2018-02-02 | 2018-07-31 | 广州市第二市政工程有限公司 | The floor construction method that tongue and groove hollow pre-fabricated panels and well word Cast-in-situ Beam are combined |
| CN109281425A (en) * | 2018-10-24 | 2019-01-29 | 江苏中南建筑产业集团有限责任公司 | A kind of assembly concrete floor and its construction method |
| CN109695345A (en) * | 2017-10-20 | 2019-04-30 | 润弘精密工程事业股份有限公司 | A kind of structure construction method of building |
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| CN112282098A (en) * | 2020-10-20 | 2021-01-29 | 华侨大学 | Steel bar bending type connecting node of combined shear wall and floor slab and construction method thereof |
| CN113027020A (en) * | 2019-12-24 | 2021-06-25 | 贺州通号装配式建筑有限公司 | Prefabricated floor slab installation node and construction method thereof |
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| CN109695345A (en) * | 2017-10-20 | 2019-04-30 | 润弘精密工程事业股份有限公司 | A kind of structure construction method of building |
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| CN108343184A (en) * | 2018-02-02 | 2018-07-31 | 广州市第二市政工程有限公司 | The floor construction method that tongue and groove hollow pre-fabricated panels and well word Cast-in-situ Beam are combined |
| CN109281425A (en) * | 2018-10-24 | 2019-01-29 | 江苏中南建筑产业集团有限责任公司 | A kind of assembly concrete floor and its construction method |
| CN110306673A (en) * | 2019-07-03 | 2019-10-08 | 沈阳建筑大学 | A kind of multistory large spaces building structure |
| CN110306672A (en) * | 2019-07-03 | 2019-10-08 | 沈阳建筑大学 | A kind of multistory large spaces building structure and its design method |
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| CN112031231A (en) * | 2020-09-14 | 2020-12-04 | 河南工业大学 | Full-assembly type floor system and prefabricated floor cover plate unit |
| CN112282098A (en) * | 2020-10-20 | 2021-01-29 | 华侨大学 | Steel bar bending type connecting node of combined shear wall and floor slab and construction method thereof |
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