CN109457801A - A kind of connecting node and its construction method of prefabricated prestressed concrete beam - Google Patents
A kind of connecting node and its construction method of prefabricated prestressed concrete beam Download PDFInfo
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- CN109457801A CN109457801A CN201811602731.8A CN201811602731A CN109457801A CN 109457801 A CN109457801 A CN 109457801A CN 201811602731 A CN201811602731 A CN 201811602731A CN 109457801 A CN109457801 A CN 109457801A
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- precast concrete
- steel slab
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 21
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 231
- 239000010959 steel Substances 0.000 claims abstract description 231
- 239000011178 precast concrete Substances 0.000 claims abstract description 108
- 238000005728 strengthening Methods 0.000 claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 239000004567 concrete Substances 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 210000002435 tendon Anatomy 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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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 kind of connecting node of prefabricated prestressed concrete beam and its construction methods, the connecting node convex precast concrete beam and convex precast concrete beam under including, under convex precast concrete beam connection side wall upper and lower end face be equipped with the first recess, the connection side wall upper and lower end face of convex precast concrete beam is correspondingly arranged on the second recess；Upper pre-embedded steel slab, lower embedded board are equipped in first recess, the second recess；Upper and lower pre-embedded steel slab has been correspondingly connected with strengthening steel slab up and down；The connection side wall of two beams is respectively equipped with third recess, the 4th recess, is laterally correspondingly provided with steel bar stress in third recess and the 4th recess.This method is two beams of production；Pre-embedded steel slab docks two beams, connects the steel bar stress in two beams.The present invention realizes three layers of energy consumption by structure design, solves the problems, such as that ductile deformation's ability difference and shock resistance are low between dry type attachment beam；And the Yi Genghuan after earthquake damage, and it is easy to assembly, assembly rate is high.
Description
Technical field
The present invention relates to construction engineering technical field more particularly to a kind of connection sections of prefabricated prestressed concrete beam
Point and its construction method.
Background technique
Assembled architecture is to promote building industry since it has many advantages, such as short building cycle, construction is simple, saving material
Change the important feature form with green building, has consequence in following building trade.
The connection type of concrete assembled structure node connects differentiation with dry type with wet type connection.The connection of wet type node,
The production of beam column component is completed in factory in advance, then transports assembled again and lifting behind scene to, and pour coagulation on bean column node
Soil pours monolithic construction after the completion.Since after prefabricated concrete setting, the two can not be real for concrete setting at node
Combine together, interface tensile strength is low, formed weak link, reduce the anti-seismic performance of building, and assembly rate is low.It is dry
The advantage of formula node connection is quick and easy for installation, and assembly rate is high, and under building industrialization trend, dry type is connected to become mainly
Trend, still, current dry type connection still have that ductile deformation's ability is poor, the low problem of shock resistance.For Anti-Seismic Region
Building, needs to meet the principle of strong column and weak beam, the weak component of strong node, so the shock strength of connecting node just seems very heavy
It wants.
Summary of the invention
To solve the above-mentioned problems, the purpose of the present invention is to propose to a kind of connection sections of prefabricated prestressed concrete beam
Point and its construction method realize three layers of energy consumption by structure design, it is poor to solve ductile deformation's ability between dry type attachment beam
The problem low with shock resistance；Meanwhile connecting node Yi Genghuan after earthquake damage, and it is easy to assembly and need not specially construct
Support, assembly rate are high.
In order to achieve the above object, the present invention is resolved using following technical scheme.
(1) a kind of connecting node of prefabricated prestressed concrete beam, including convex pre- under setting including corresponding to each other
Beams of concrete processed and convex precast concrete beam；It is respectively set in convex precast concrete beam and convex precast concrete beam under described
There are transverse reinforcing tendons and longitudinal reinforcing tendons；
The top and bottom of the connection side wall of convex precast concrete beam are respectively arranged with the first recess under described, described convex
The top and bottom of the connection side wall of precast concrete beam, which respectively correspond, is provided with the second recess；Convex precast concrete beam under described
Upper end the first recess and convex precast concrete beam upper end the second recess in respectively correspond and be provided with pre-embedded steel slab,
It is respectively corresponded in first recess of convex precast concrete beam lower end and the second recess of convex precast concrete beam lower end under described
It is provided with lower pre-embedded steel slab；The upper pre-embedded steel slab and lower pre-embedded steel slab are fixedly connected with waling respectively；It is described pre-
The lower end surface of the upper surface and lower pre-embedded steel slab of burying steel plate pass through respectively fixation member be correspondingly connected with strengthening steel slab and it is lower plus
Gu steel plate；
The upper and lower part of the connection side wall of convex precast concrete beam is respectively arranged with third recess under described, described convex
The upper and lower part of the connection side wall of precast concrete beam is respectively arranged with the 4th recess corresponding with third recess；Described
One recess, third recess are stepped on the connection side wall of convex precast concrete beam under, and second recess, the 4th recess exist
It is stepped on the connection side wall of convex precast concrete beam；
Laterally be correspondingly arranged on steel bar stress respectively in the third recess and the 4th recess, steel bar stress one end respectively with
Convex precast concrete beam, the connection of convex precast concrete beam, the other end pass through interconnecting piece with corresponding steel bar stress under corresponding
Part is fixedly connected.
In addition, the connecting node of prefabricated prestressed concrete beam provided by the invention can also have following additional skill
Art feature:
Preferably, the connecting component is steel bushing, and the steel bushing is sheathed on the junction of two steel bar stresses, described
Gap between steel bar stress and steel bushing is poured using mortar.
Preferably, the connecting side at the middle part of the connection side wall of convex precast concrete beam and convex precast concrete beam under described
The middle part of wall is slope；Junction steel plate is embedded on the slope respectively, the top and bottom difference of junction steel plate is vertical
It is provided with template, the upper end or lower end and the bottom surface of corresponding recess of template are concordant, and template is fixedly connected with cross reinforcing.
It is further preferred that the angle of the junction steel plate and horizontal plane is 30-60 °.
It is further preferred that being equipped with elastic sheet rubber on the junction steel plate.
Preferably, the fixation member is multiple strengthening studs, and multiple strengthening studs default in the upper pre-buried steel
In plate and lower pre-embedded steel slab；It respectively corresponds and offers and multiple strengthening stud phases on the upper strengthening steel slab and lower strengthening steel slab
The multiple screw holes matched, each strengthening stud are fixed with corresponding screw hole by nut.
It preferably, further include precast concrete column, one end end of the separate connection side wall of the upper pre-embedded steel slab and pre-
The distance between concrete column processed is 100-200mm.
Preferably, the convex precast concrete beam under connect the first recess, convex pre- of sidewall upper to upper pre-embedded steel slab respectively
Second recess of beams of concrete upper surface processed matches.
Preferably, the convex precast concrete beam under connect the first recesses, convex pre- of side wall lower ends to lower pre-embedded steel slab respectively
Second recess of beams of concrete lower end surface processed matches.
Preferably, the horizontal distance etc. between the upper pre-embedded steel slab in the upper pre-embedded steel slab and the second recess in the first recess
In the sum of the length of third recess, the length of the 4th recess and thickness of elastic sheet rubber.
Preferably, the horizontal distance between the upper pre-embedded steel slab in the upper pre-embedded steel slab and the second recess in the first recess is big
In the length of upper strengthening steel slab or lower strengthening steel slab.
(2) a kind of construction method of the connecting node of prefabricated prestressed concrete beam, comprising the following steps:
Step 1, convex precast concrete beam and convex precast concrete beam under production；
Step 2, pre-buried upper pre-embedded steel slab and lower pre-embedded steel slab in the first recess and the second recess；The convex concrete by under
Tu Liang and the docking of convex precast concrete beam；Steel bar stress in steel bar stress and the 4th recess in third recess is passed through into company
Relay part is fixedly connected；
Step 3, upper pre-embedded steel slab, lower pre-embedded steel slab are passed through into fixation member and upper strengthening steel slab, lower strengthening steel slab respectively
It is fixedly connected.
Compared with prior art, beneficial effects of the present invention are as follows:
(1) present invention is designed by structure, forms three layers of energy-dissipation structure, upper strengthening steel slab and lower strengthening steel slab are in beam
Outermost layer forms one layer of energy-dissipation structure, and junction steel plate forms energy consumption layer at middle part, and steel bar stress forms one layer of energy consumption knot in inside
Structure, when making to occur small shake (less than 4 grades), each component keeps elastic stage；Outer layer strengthening steel slab is bent in the case of middle shake (4-6 grades)
Clothes destroy, and junction steel plate starts to surrender stress；In the case of big shake (6-8 grades), junction steel plate energy consumption is destroyed, and steel bar stress starts
Stress is surrendered, so that this connecting node is able to bear various earthquake magnitudes, in earthquake, guarantees the stability and safety of the main structure of beam
Property, improve the anti-seismic performance of connecting node.
(2) present invention by force part of the beam in earthquake be designed as the strengthening steel slab being conveniently replaceable, junction steel plate and by
Power reinforcing bar makes connecting node of the invention convenient for the reparation and replacement after earthquake, practical.
(3) present invention is at connecting node by being arranged elastic sheet rubber, has made at connecting node one layer of buffer layer more, into
One step strengthens ductile deformation's ability and anti-seismic performance of this connecting node.
(4) junction steel plate in the present invention connect shape with the anti-Z-shaped that the template of its two sides is formed, and makes this connecting node
Shape meet shaking trend of the girder construction in earthquake, even if so that the changing of the relative positions occurs under the shock wave of earthquake for this connecting node
It will not be broken, enhance ductile deformation's ability of this connecting node, and then strengthen anti-seismic performance.
(5) construction method of the invention is simple, easily operated, and assembly rate is high, is greatly improved the efficiency of construction.
Detailed description of the invention
The present invention is described in further details in the following with reference to the drawings and specific embodiments.
Fig. 1 is a kind of schematic perspective view of the connecting node of prefabricated prestressed concrete beam of the invention.
Fig. 2 be in the present invention under convex precast concrete beam attachment structure schematic diagram.
Fig. 3 be in the present invention under convex precast concrete beam structural schematic diagram.
Fig. 4 is the structural schematic diagram of the convex precast concrete beam in the present invention.
Fig. 5 is the structural schematic diagram of the upper embedded board in the present invention.
Fig. 6 is the structural schematic diagram of the upper securing plate in the present invention.
Fig. 7 is a kind of structural schematic diagram of embodiment of the connecting component in the present invention.
In the above figure, convex precast concrete beam under 1；101 first recesses；102 third recesses；2 convex precast concrete beams；
201 second recesses；202 the 4th recesses；Pre-embedded steel slab on 3；4 lower pre-embedded steel slabs；Strengthening steel slab on 5；501 strengthening studs；502 spiral shells
Hole；503 nuts；6 lower strengthening steel slabs；7 steel bar stresses；701 steel bushings；8 junction steel plates；801 templates；9 precast concrete columns；10
Elastic sheet rubber.
Specific embodiment
With reference to Fig. 1-Fig. 4, a kind of connecting node of prefabricated prestressed concrete beam provided in an embodiment of the present invention, packet
Include convex precast concrete beam 1 and convex precast concrete beam 2 under reciprocal correspondence setting；Convex 1 He of precast concrete beam under described
Transverse reinforcing tendons and longitudinal reinforcing tendons are respectively arranged in convex precast concrete beam 2；The company of convex precast concrete beam 1 under described
The top and bottom for connecing side wall are respectively arranged with the first recess 101, the upper end of the connection side wall of the convex precast concrete beam 2
It is respectively corresponded with lower end and is provided with the second recess 201；Under described first recess 101 of the upper end of convex precast concrete beam 1 with it is upper
It is respectively corresponded in second recess 201 of the upper end of convex precast concrete beam 2 and is provided with pre-embedded steel slab 3, it is convex prefabricated mixed under described
It respectively corresponds and is provided in the first recess 101 and the second recess 201 of convex 2 lower end of precast concrete beam of 1 lower end of solidifying soil beam
Lower pre-embedded steel slab 4；The upper pre-embedded steel slab 3 and lower pre-embedded steel slab 4 are fixedly connected with waling respectively；The upper pre-buried steel
The upper surface of plate 3 and the lower end surface of lower pre-embedded steel slab 4 pass through fixation member respectively and have been correspondingly connected with strengthening steel slab 5 and lower reinforcing
Steel plate 6.
The upper and lower part of the connection side wall of convex precast concrete beam 1 is respectively arranged with third recess 102 under described, described
It is recessed that the upper and lower part of the connection side wall of convex precast concrete beam 2 is respectively arranged with the corresponding with third recess 102 the 4th
Mouth 202；First recess 101, third recess 102 are stepped on the connection side wall of convex precast concrete beam 1 under, described
Second recess 201, the 4th recess 202 are stepped on the connection side wall of convex precast concrete beam 2；The third recess
102 and the 4th are laterally correspondingly arranged on steel bar stress 7 in recess 202 respectively, 7 one end of steel bar stress respectively with it is corresponding under it is convex pre-
Beams of concrete 1 processed, convex precast concrete beam 2 connect, and the other end passes through connecting component fixation company with corresponding steel bar stress 7
It connects.
In above embodiments, under waling in convex precast concrete beam 1 and convex precast concrete beam 2 with it is upper pre-
Bury steel plate 3, lower pre-embedded steel slab 4 is fixedly connected, carry out assembly connection is mutually matched by connecting node, is formed prefabricated
Beams of concrete；Convex precast concrete beam 1 connects upper pre-embedded steel slab 3 in the first recess 101 of side wall upper and lower side, lower pre- under
Bury corresponding upper pre-embedded steel slab 3 in the second recess 201 of steel plate 4 and convex precast concrete beam 2 connection side wall upper and lower side, lower pre-
Bury steel plate 4 and form both sides symmetrical structure, under waling in convex precast concrete beam 1 and convex precast concrete beam 2 with
Upper pre-embedded steel slab 3, lower pre-embedded steel slab 4 are welded and fixed, while pre-embedded steel slab 3 and lower pre-embedded steel slab 4 being made to become in beam and external
The field-replaceable unit of strengthening steel slab connection, makes in middle shake, external upper strengthening steel slab 5 and lower strengthening steel slab 6 surrender or
It destroys, and main beam structure is unaffected, forms the external layer that consumes energy, and outer layer strengthening steel slab is replaceable.First recess 101, third
Recess 102 and the second recess 201, the 4th recess 202, under making convex precast concrete beam 1 connection side wall top and bottom and
The top and bottom of the connection side wall of convex precast concrete beam 2 are respectively formed staged recess, increase the contact of connecting node
Area, and then increasing friction force improve binding force.In third recess 102 and the 4th recess 202 respectively laterally be correspondingly arranged on by
Power reinforcing bar 7,7 one end of steel bar stress with it is corresponding under convex precast concrete beam 1, convex precast concrete beam 2 connect, the other end with
Corresponding steel bar stress 7 is fixedly connected by connecting component, and steel bar stress 7 forms one layer of stress enhancing energy consumption layer inside beam,
In middle shake, steel bar stress 7 does not occur to damage and deform, and in the case of big shake, steel plate exits work, and steel bar stress 7 is in beam
Internal stress enhances the anti-seismic performance of connecting node.
Connecting node of the invention is designed by structure, forms three layers of energy-dissipation structure, upper strengthening steel slab 5 and lower reinforcing steel
Plate 6 forms one layer of energy-dissipation structure and steel bar stress 7 in the outermost layer of beam and forms one layer of energy-dissipation structure in inside, makes that small shake occurs
When, each component of this connecting node keeps elastic stage, and outer layer strengthening steel slab 6 starts to surrender in the case of middle shake, and steel bar stress 7 is not
Stress guarantees the stability and safety of the main structure of beam, improves the anti-seismic performance of connecting node；Meanwhile by beam on ground
The force part in earthquake centre is designed as the strengthening steel slab and steel bar stress 7 being conveniently replaceable, and makes connecting node of the invention convenient for earthquake
Reparation and replacement afterwards, it is practical.
With reference to Fig. 7, according to one embodiment of present invention, connecting component is steel bushing 701, and steel bushing 701 is sheathed on two
The junction of a steel bar stress 7, the gap between steel bar stress 7 and steel bushing 701 are poured using mortar.
In above embodiments, two groups of steel bar stresses can be connected with welding, can also be sheathed on by steel bushing 701 two groups by
The junction of power reinforcing bar 7 avoids between two groups of steel bar stresses 7 to be connected convenient for the accurate docking between two groups of steel bar stresses 7
The appearance position changing of the relative positions, the gap between steel bar stress 7 and steel bushing 701 are poured using mortar, can reinforce the connection of steel bar stress 7
Strength and stability enhances the bonding strength of connecting node.
With reference to Fig. 1 and Fig. 2, according to one embodiment of present invention, under convex precast concrete beam 1 connection side wall middle part
Middle part with the connection side wall of convex precast concrete beam 2 is slope；Junction steel plate 8 is embedded on slope respectively, is connected
The top and bottom of steel plate 8 are vertically provided with template 801 respectively, the upper end or lower end of template 801 and the bottom surface of corresponding recess
Concordantly, template 801 is fixedly connected with cross reinforcing.
In above embodiments, under convex precast concrete beam 1 connection side wall middle part and convex precast concrete beam 2 company
The middle part for connecing side wall is slope, and slope is embedded with junction steel plate 8, the vertical welding respectively of the top and bottom of junction steel plate 8
Template 801, the upper end or lower end and the bottom surface of corresponding recess of template 801 are concordant, template 801 and the fixed company of cross reinforcing
It connects, ensure that the flatness of the connection plane at connecting node, that is, ensure that the uniformity of connecting node two sides beam stress, make this
The transmitting even of connecting node power in earthquake；And junction steel plate 8 forms anti-Z-shaped in junction with template 801 and connect
Shape makes the shape of this connecting node meet shaking trend of the girder construction in earthquake, so that this connecting node rushing in earthquake
Hitting under wave will not be broken the changing of the relative positions occurs, and enhance ductile deformation's ability of this connecting node, and then strengthen anti-
Shock stability.
With reference to Fig. 1 and Fig. 2, according to one embodiment of present invention, the angle of junction steel plate 8 and horizontal plane is 30-60 °.
In above embodiments, the angle of junction steel plate 8 and horizontal plane is 30-60 °, makes the support of junction steel plate 8 Yu two sides
The shape of template 801 and the Sasser shape of earthquake are similar so that this connecting node the changing of the relative positions occurs under the shock wave of earthquake and
It is not broken, enhances ductile deformation's ability of this connecting node, and then strengthen anti-seismic performance.
With reference to Fig. 1, according to one embodiment of present invention, elastic sheet rubber 10 is equipped on junction steel plate 8.
In above embodiments, it is equipped with elastic sheet rubber 10 on junction steel plate 8, has made at connecting node one layer of buffering more
Layer, further enhances ductile deformation's ability and anti-seismic performance of this connecting node.
With reference to Fig. 5 and Fig. 6, according to one embodiment of present invention, the fixation member is multiple strengthening studs 501, more
A strengthening stud 501 defaults in the upper pre-embedded steel slab 3 and lower pre-embedded steel slab 4；The upper strengthening steel slab 5 and lower reinforcing
Respectively correspond the multiple screw holes 502 for offering and matching with multiple strengthening studs 501 on steel plate 6, each strengthening stud 501 with it is right
Answer screw hole 502 fixed by nut 503.
In above embodiments, strengthening stud 501 is protruded into screw hole 502 and is fixedly connected by nut 503, can be made pre-buried
Detachable connection is formed between steel plate 3 and upper strengthening steel slab 5, lower pre-embedded steel slab 4 and lower strengthening steel slab 6, meanwhile, it is incited somebody to action in outer layer
Under convex precast concrete beam 1 and convex precast concrete beam 2 be fixedly connected, while can be arranged by the size of bolt, be made
The result of itself and beam matches, and guarantees the stability of the two connection.
It further include precast concrete column 9 according to one embodiment of present invention with reference to Fig. 1-Fig. 3, upper pre-embedded steel slab 3
The distance between one end end and precast concrete column 9 far from connection side wall are 100-200mm.
In above embodiments, in normal use process, beam mainly by vertical uniform load q, exists in connecting node position
Moment of flexure, the distance between one end end of the separate connection side wall of upper pre-embedded steel slab 3 and precast concrete column 9 are 100-200mm,
Keep the moment of flexure at connecting node not too large, and then avoids the overall structure as caused by the moment of flexure between connecting node and column
The problem of stability difference.
With reference to Fig. 1, according to one embodiment of present invention, convex precast concrete beam 1 is connect upper pre-embedded steel slab 3 under respectively
The second recess 201 that the first recess 101, the convex precast concrete beam 2 of sidewall upper connect sidewall upper matches.
With reference to Fig. 2 and Fig. 4, according to one embodiment of present invention, the lower pre-embedded steel slab 4 convex precast concrete beam under respectively
The second recess 201 that the first recess 101, the convex precast concrete beam 2 of 1 connection side wall lower ends connect side wall lower ends matches.
In above embodiments, upper pre-embedded steel slab 3, lower pre-embedded steel slab 4 match with corresponding recess, keep the first of upper end recessed
Mouthful the 101, second recess 201 is filled up by two upper pre-embedded steel slabs 3, and the first recess 101 of lower end, the second recess 201 are by under two
Pre-embedded steel slab 4 fills up, upper pre-embedded steel slab and lower pre-embedded steel slab by in corresponding beam transverse steel or longitudinal reinforcement weld it is solid
It is fixed, the notch for occurring power transmitting at the first recess 101 or the second recess 201 is avoided, the power in this connecting node is transmitted and connects
It is continuous, the stability of enhancing structure.
With reference to Fig. 1, according to one embodiment of present invention, upper pre-embedded steel slab 3 and the second recess in the first recess 101
The horizontal distance between upper pre-embedded steel slab 3 in 201 is equal to length, the length and elasticity of the 4th recess 202 of third recess 102
The sum of thickness of rubber.
In above embodiments, the upper pre-embedded steel slab 3 in upper pre-embedded steel slab 3 and the second recess 201 in the first recess 101 it
Between horizontal distance be equal to third recess 102 the sum of length, the length of the 4th recess 202 and the thickness of elastic rubber, formed
Inside and outside supplementing structure, make upper pre-embedded steel slab 3 in the upper pre-embedded steel slab 3 and the second recess 201 in the first recess 101 of outer layer it
Between hollow part weak point mended by steel bar stress 7 in the third recess 102 of internal layer, the 4th recess 202 and elastic rubber
Fill reinforcing, it is contemplated that hollow part is set to outer layer, steel bar stress 7 is set to internal layer, is presented by the specific stress condition of earthquake central sill
Connecting joint structure intensity ecto-entad is gradually incremented by.
With reference to Fig. 1, according to one embodiment of present invention, upper pre-embedded steel slab 3 and the second recess in the first recess 101
The horizontal distance between upper pre-embedded steel slab 3 in 201 is greater than the length of upper strengthening steel slab 5 or lower strengthening steel slab 6.
In above embodiments, the upper pre-embedded steel slab 3 in upper pre-embedded steel slab 3 and the second recess 201 in the first recess 101 it
Between horizontal distance be greater than the length of upper strengthening steel slab 5 or lower strengthening steel slab 6, strengthening steel slab 5 or lower strengthening steel slab 6 in guarantee
In upper pre-embedded steel slab 3 or the outside of lower pre-embedded steel slab 4, when an earthquake occurs, externally reinforced plate destroy at most influence pre-embedded steel slab without
Main beam structure can be destroyed, and convenient for destroying the replacement of part.
Embodiment
A kind of construction method of the connecting node of prefabricated prestressed concrete beam, comprising the following steps:
Step 1, convex precast concrete beam and convex precast concrete beam under production.
Step 2, pre-buried upper pre-embedded steel slab and lower pre-embedded steel slab in the first recess and the second recess；It specifically, will be upper pre-
Bury steel plate and lower pre-embedded steel slab embed in corresponding recess, make the upper surface of pre-embedded steel slab under convex precast concrete beam,
The upper surface of convex precast concrete beam is concordant, makes the lower end surface of lower pre-embedded steel slab convex precast concrete beam, convex prefabricated under
The lower end surface of beams of concrete is concordant.Under on the slope of the connection side wall of convex precast concrete beam and convex precast concrete beam
Pre-buried junction steel plate；Elastic sheet rubber is laid on junction steel plate, convex precast concrete beam and convex precast concrete beam by under
Docking, is directed at the steel bar stress in third recess with the steel bar stress in the 4th recess；By the steel bar stress in third recess
It is fixedly connected with the steel bar stress in the 4th recess；Specifically, by way of welding or steel bushing connection, mortar is poured again
The steel bar stress on both sides is fixedly connected.
Step 3, the default bolt on upper pre-embedded steel slab, lower pre-embedded steel slab is protruded into upper strengthening steel slab, on lower strengthening steel slab
Correspondence screw hole in, and fixed by nut, complete the assembly of the connecting node of precast concrete beam.
It is pre-buried for steel plate and the reinforcing bar in beam to be welded and fixed described in construction method of the invention, it completes pre-buried
The position of part is fixed, i.e., upper pre-embedded steel slab, lower pre-embedded steel slab convex precast concrete beam, the position in convex precast concrete beam under
Waling in beam edge is welded and fixed；It, will be corresponding after two junction steel plates and template welding or bolt are fixed
Template under convex precast concrete beam, in convex precast concrete beam be located at third recess and the lateral of the 4th indent is reinforced
Muscle is welded and fixed.If between upper pre-embedded steel slab, lower pre-embedded steel slab and beam, there are gaps, there is seam between junction steel plate and beam
Gap is poured using concrete mortar.Precast beam is assembled using the method for the embodiment of the present invention, it is only necessary to two workers two
The assembling process of the precast concrete beam can be completed within hour, time-consuming short, easily operated, assembly rate is high, is greatly improved
The efficiency of construction.
Upper strengthening steel slab, lower strengthening steel slab, upper pre-embedded steel slab, the length of lower pre-embedded steel slab and thickness in the present invention according to
The seismic behavior of practical structures and the building determines, width and beam it is of same size.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modification and variations of the invention belong to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of connecting node of prefabricated prestressed concrete beam, which is characterized in that convex under setting including corresponding to each other
Precast concrete beam (1) and convex precast concrete beam (2)；Convex precast concrete beam (1) and convex precast concrete under described
(2) are respectively arranged with transverse reinforcing tendons and longitudinal reinforcing tendons in beam；
The top and bottom of the connection side wall of convex precast concrete beam (1) are respectively arranged with the first recess (101) under described, described
The top and bottom of the connection side wall of convex precast concrete beam (2), which respectively correspond, is provided with the second recess (201)；It is convex under described
Second recess of the upper end of the first recess (101) and convex precast concrete beam (2) of the upper end of precast concrete beam (1)
(201) it is respectively corresponded in and is provided with pre-embedded steel slab (3), the first recess (101) of convex precast concrete beam (1) lower end under described
Be provided with lower pre-embedded steel slab (4) with being respectively corresponded in second recess (201) of convex precast concrete beam (2) lower end, it is described on
Pre-embedded steel slab (3) and lower pre-embedded steel slab (4) are fixedly connected with waling respectively；The upper surface of the upper pre-embedded steel slab (3)
Pass through fixation member respectively with the lower end surface of lower pre-embedded steel slab (4) and is correspondingly connected with upper strengthening steel slab (5) and lower strengthening steel slab
(6)；
The upper and lower part of the connection side wall of convex precast concrete beam (1) is respectively arranged with third recess (102) under described, described
The upper and lower part of the connection side wall of convex precast concrete beam (2) is respectively arranged with corresponding with third recess (102)
Four recesses (202)；First recess (101), third recess (102) are under on the connection side wall of convex precast concrete beam (1)
It is stepped, second recess (201), the 4th recess (202) are in rank on the connection side wall of convex precast concrete beam (2)
It is trapezoidal；
Steel bar stress (7), steel bar stress are laterally correspondingly arranged in the third recess (102) and the 4th recess (202) respectively
(7) one end respectively with it is corresponding under convex precast concrete beam (1), convex precast concrete beam (2) connect, the other end with it is corresponding
Steel bar stress (7) is fixedly connected by connecting component.
2. the connecting node of prefabricated prestressed concrete beam according to claim 1, which is characterized in that the connection
Component is steel bushing (701), and the steel bushing (701) is sheathed on the junction of two steel bar stresses (7), the steel bar stress
(7) gap between steel bushing (701) is poured using mortar.
3. the connecting node of prefabricated prestressed concrete beam according to claim 1, which is characterized in that convex under described
The middle part of the connection side wall at the middle part and convex precast concrete beam (2) of the connection side wall of precast concrete beam (1) is slope；
It is embedded with respectively on the slope junction steel plate (8), the top and bottom of junction steel plate (8) are vertically provided with mould respectively
Plate (801), the upper end or lower end of template (801) and the bottom surface of corresponding recess are concordant, and template (801) is fixed with cross reinforcing
Connection.
4. the connecting node of prefabricated prestressed concrete beam according to claim 3, which is characterized in that the connection
The angle of steel plate (8) and horizontal plane is 30-60 °.
5. the connecting node of prefabricated prestressed concrete beam according to claim 3, which is characterized in that the connection
Elastic sheet rubber (10) are equipped on steel plate (8).
6. the connecting node of prefabricated prestressed concrete beam according to claim 1, which is characterized in that the fixation
Component is multiple strengthening studs (501), and it is pre-buried under that multiple strengthening studs (501) default in the upper pre-embedded steel slab (3)
In steel plate (4)；
It respectively corresponds to offer on the upper strengthening steel slab (5) and lower strengthening steel slab (6) and match with multiple strengthening studs (501)
Multiple screw holes (502), it is fixed that each strengthening stud (501) and corresponding screw hole (502) pass through nut (503).
7. the connecting node of prefabricated prestressed concrete beam according to claim 1, which is characterized in that further include pre-
Concrete column (9) processed, between one end end and precast concrete column (9) of the separate connection side wall of the upper pre-embedded steel slab (3)
Distance be 100-200mm.
8. the connecting node of prefabricated prestressed concrete beam according to claim 5, which is characterized in that the first recess
(101) horizontal distance between upper pre-embedded steel slab (3) in the upper pre-embedded steel slab (3) in and the second recess (201) is equal to third
The sum of the length of recess (102), the length of the 4th recess (202) and thickness of elastic sheet rubber (10).
9. the connecting node of prefabricated prestressed concrete beam according to claim 8, which is characterized in that the first recess
(101) horizontal distance between upper pre-embedded steel slab (3) in the upper pre-embedded steel slab (3) in and the second recess (201) is greater than upper add
Gu the length of steel plate (5) or lower strengthening steel slab (6).
10. a kind of construction method of the connecting node of prefabricated prestressed concrete beam, comprising the following steps:
Step 1, convex precast concrete beam and convex precast concrete beam under production；
Step 2, pre-buried upper pre-embedded steel slab and lower pre-embedded steel slab in the first recess and the second recess；The convex precast concrete beam by under
It is docked with convex precast concrete beam；Steel bar stress in steel bar stress and the 4th recess in third recess is passed through into interconnecting piece
Part is fixedly connected；
Step 3, upper pre-embedded steel slab, lower pre-embedded steel slab are passed through fixation member respectively to fix with upper strengthening steel slab, lower strengthening steel slab
Connection.
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| CN201811602731.8A CN109457801B (en) | 2018-12-26 | 2018-12-26 | Connecting node of prefabricated reinforced concrete beam and construction method thereof |
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| CN113006279A (en) * | 2021-03-19 | 2021-06-22 | 山东建筑大学 | Inorganic adhesive composite bamboo-wood structure middle beam-column connection node, frame structure and method |
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