CN100359110C - Steel reinforced concrete hidden rib contignation system and construction method thereof - Google Patents
Steel reinforced concrete hidden rib contignation system and construction method thereof Download PDFInfo
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- CN100359110C CN100359110C CNB2005100322951A CN200510032295A CN100359110C CN 100359110 C CN100359110 C CN 100359110C CN B2005100322951 A CNB2005100322951 A CN B2005100322951A CN 200510032295 A CN200510032295 A CN 200510032295A CN 100359110 C CN100359110 C CN 100359110C
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Abstract
The present invention relates to a reinforcing rod concrete hidden rib configuration system and a construction method thereof, which is composed of a plurality of unit hidden rib beams, wherein each unit hidden rib beam comprises inner moulds, a reinforcing rod concrete hidden rib between the adjacent inner moulds, a reinforcing rod concrete top slab and a reinforcing rod concrete bottom slab, and each inner mould is provided with a clamping apparatus which is connected with a reinforcing rod. Because the present invention uses the clamping apparatus which is directly connected with the reinforcing rod, the unit hidden rib beams are straight, and the cross sections of the beams are all accordant or are in an evenly gradual change. The present invention solves the defects that the structural working procedure of the existing reinforcing rod concrete hollow slab is large, construction is complicated, and a bidirectional stressed slab can not be formed because the localization of the inner moulds is not exact, etc. The present invention has the advantages of simple and high work efficiency construction, exact localization of the inner moulds, reasonable structural stress, smooth hollow slab bottoms, energy saving, environmental protection and good economy. The present invention is widely used in reinforcing rod concrete structures of various multilayer and high layer industries and civil architecture.
Description
Technical field
The present invention relates to a kind of concrete hollow beam and slab structure, dark girt strip plated construction of particularly a kind of steel bar concrete and job practices thereof.
Background technology
The concrete hollow plated construction reduces the building floor height, thereby has better economic owing to can reduce the deadweight of structure and the Laminate construction thickness in house.Owing to can reduce protruding deck-molding down at the bottom of the floor plate, be convenient to construction and pipe arrangement simultaneously, can improve the usage space in house, improve the function of building.Thereby in engineering, obtained using comparatively widely.The concrete hollow plated construction forms hollowcore slab by the built-in internal mold concrete of finding time.Existing internal mold can be divided into cylindrical shell and block two classes by shape, mostly adopts hollow-core construction, can be divided into inorganic material class, organic material class and metal species by material.Organic material is mainly made by new and old plastic processing, and is in light weight, is convenient to transportation.The internal mold of using on the engineering mostly is cylindrical shell at present, will fix with reinforcing bar in the installation, and working procedure is many, and construction efficiency is low, and internal mold is difficult to accurate location simultaneously, and plated construction can not form the bidirectional stress structure by design idea.
Chinese patent notice of authorization CN2490247Y " no cap concrete slab rod structure " adopts the box-like cavity concrete plate center concrete of finding time to form hollow building cover, Chinese patent application publication number CN1349029A " a kind of steel bar concrete tubulose cassette ceiling " discloses in the concrete plate hollow section has been set, form vertical rib, upper flange, primary structure member in the plates such as lower wing plate, " in-situ deposited prestressed hollow reinforced concrete roof and the job practices thereof " of Chinese patent application publication number CN1278576A discloses and placed core formation hollow building cover structure in the concrete plate, " the section steel beam non-loose core pore-creating cast-in-situ reinforced concrete hollow slab " of Chinese patent notice of authorization CN2408161Y discloses pre-buried cavity hard thin-wall members in the concrete plate so that form hollowcore slab.Above-mentioned open source literature all is to form the hollowcore slab structure by the internal mold concrete of finding time is set in concrete, it mostly is inorganic material with internal mold, and weight is big, is generally tubulose or bulk, in construction, to be located, be fixed with iron wire or other material then with the construction orientation tool.The position of internal mold is influenced greatly by construction technology, will influence relative position between the internal mold such as the otherness of workman operation, above-mentioned for another example internal mold and reinforcing bar are unrealized and are closely connected, in work progress, power and the suffered buoyancy function of internal mold because machinery vibrates, the relative position of internal mold all will change.Therefore, more than concrete hidden rib in the disclosed hollowcore slab generally be not straight, the sectional dimension of diverse location concrete hidden rib changes, its holistic resistant behavior will reduce greatly.Because internal mold can only arrange along direction, and locate inaccurately, can only form the single load bearing plate, can not form stressed rational bidirectional stress plate, shown in Figure 22,23.In Figure 22, can only guarantee that the dark girt strip of a direction forms, the dark girt strip of another direction can't form, and in Figure 23, the dark girt strip of both direction all can't form, thereby the hollowcore slab structure must increase thickness and quantity of reinforcement, the construction costs height.
Summary of the invention
The purpose of this invention is to provide the dark girt strip plated construction of a kind of steel bar concrete, it both can utilize internal mold to be provided with the direct-connected anchor clamps of reinforcing bar and realize accurately location, can significantly improve the stress performance of beam and slab structure again, realized the one-way slabs and the bidirectional stress plate of real meaning.Purpose of the present invention also will provide a kind of job practices of constructing the dark girt strip plated construction of this steel bar concrete.
For achieving the above object, the dark girt strip plated construction of a kind of steel bar concrete of the present invention, it comprises the dark girt strip in unit, internal mold, reinforcing bar, steel bar concrete, the dark girt strip in described unit arranges that according to certain orientation the beam body is straight, beam section uniformity or evenly gradual change.
For implementation structure optimization and give full play to from the detent edge of carrying jig internal mold in construction, its further step is:
Be combined to form the dark girt strip plated construction of steel bar concrete between the dark girt strip in described unit mutually.
The dark girt strip in described unit by the reinforcing bar concrete hidden rib between internal mold, the adjacent internal mold, steel bar concrete top board, the steel bar concrete base plate is integrated poured constitutes.
Internal mold is pressed latticed arrangement or is pressed fan shape and arrange in plate, a grid or a fan-shaped direction are row, grid or another fan-shaped direction are row, the internal mold fixed point is installed, the internal mold central point overlaps with grid or fan-shaped intersection point, vertically become its longitudinal axis conllinear of internal mold of row, its axis of pitch conllinear of transverse rows of internal mold.
Internal mold fixed point is installed, each row or respectively arrange the internal mold central point parallel or intersection or extended line intersect at a point along the connecting line of plate length direction.
The internal mold fixed point is installed, and spacing equates or the arrangement of spacing according to certain rules between the internal mold central point.
The vertical or horizontal unidirectional layout of the dark girt strip in described unit.
The dark girt strip bidirectional arrangements in described unit, 0～90 ° of the dark girt strip axis angle in both direction unit.
The beam section of the dark girt strip in described unit increases regularly or reduces along the beam length direction.
Described internal mold is provided with and the direct-connected anchor clamps of reinforcing bar.
The anchor clamps of described internal mold are from belt supporting frame or special-purpose connecting elements, and their end is provided with and can directly be installed on opening, slotted eye or the crotch of installing on the reinforcing bar.
The body of described internal mold is hollow cylindrical shell, solid block, solid cylindrical shell or cavity block.
The cross sectional shape of described hollow cylindrical shell and solid cylindrical shell is circle, ellipse, square or polygon.
The cross sectional shape of described solid block and cavity block is square, cone or polyhedron.
The beam section of the dark girt strip in described unit has " worker " type cross section and T-shape cross section.
The dark girt strip in described unit can make up with solid beam, and this solid depth of beam is more than or equal to the height of the dark girt strip in unit.
But described unit dark girt strip arrangement prestress reinforcing bar, this prestressed reinforcement can be arranged in the dark girt strip in unit of a direction, or are arranged in the dark girt strip in unit of both direction.
Described reinforcing bar comprises steel mesh reinforcement at the bottom of plate top steel mesh reinforcement, the plate, connecting reinforcement and reinforcing bar is installed up and down, is provided with the connector that several and soffit formwork connect firmly on steel mesh reinforcement at the bottom of the plate.
Aggregate in the described steel bar concrete is selected fines for use, and concrete can be selected ordinary concrete or self-compacting concrete for use.
For dark girt strip plated construction of steel bar concrete that realizes above-mentioned stress performance and the detent edge of internal mold in construction of giving full play to from carrying jig, job practices of the present invention comprises following several steps:
(1) lays soffit formwork;
(2) internal mold and reinforcing bar position are determined in the line location;
(3) steel mesh reinforcement and installation reinforcing bar at the bottom of laying plate on the soffit formwork;
(4) be provided with some connectors with plate at the bottom of steel mesh reinforcement be fixed on the soffit formwork;
(5) prestressed reinforcement is set;
(6) internal mold and anchor clamps are installed, anchor clamps are directly snapped in the installation reinforcing bar for opening, slotted eye or the crotch that the end from belt supporting frame or special-purpose connecting elements is provided with, internal mold and installation reinforcing bar are fixed on one, adjust reinforcing bar position is installed, make its longitudinal axis conllinear of internal mold of vertical one-tenth row, its axis of pitch conllinear of transverse rows of internal mold;
(7) lay connecting reinforcement up and down;
(8) installing plate top steel mesh reinforcement and fixing;
(9) concrete build, vibrate, maintenance;
(10) prestressed reinforcement stretch-draw;
(11) stripping.
The further measure of above-mentioned steps (6):
Internal mold is pressed latticed arrangement or pressed the fan shape arrangement in plate, a grid or a fan-shaped direction are row, grid or another fan-shaped direction are row, internal mold directly snaps in the installation reinforcing bar by anchor clamps and makes the internal mold installing and locating, the internal mold central point overlaps with grid or fan-shaped intersection point, vertically become its longitudinal axis conllinear of internal mold of row, its axis of pitch conllinear of transverse rows of internal mold.
Because the internal mold that the present invention uses, be provided with and the direct-connected anchor clamps of reinforcing bar, anchor clamps are for being fixed on one from belt supporting frame or special-purpose connecting elements with internal mold and installation reinforcing bar, internal mold is pressed latticed arrangement or is pressed fan shape and arrange in plate, a grid or a fan-shaped direction are row, and grid or another fan-shaped direction are to arrange, the internal mold fixed point is installed, the internal mold central point overlaps with grid or fan-shaped intersection point, feasible its longitudinal axis conllinear of internal mold that vertically becomes row, its axis of pitch conllinear of transverse rows of internal mold; The dark girt strip in unit arranges that according to latticed or fan shape the beam body is straight, and beam section uniformity or evenly gradual change improve the stress performance of the dark girt strip plated construction of steel bar concrete; This invention has overcome existing concrete hollow board structure construction complexity, operation is many and internal mold is difficult to accurate location, can not form the defective of bidirectional stress plate.Easy construction work efficiency height of the present invention, internal mold accurate positioning, structure stress are rationally, smooth at the bottom of the plate, energy-conserving and environment-protective, economy are excellent.Can be widely used in the reinforced concrete structure of all kinds of multilayers and high-rise industry and civilian construction.
The present invention compares with existing hollowcore slab structure has following characteristics:
First internal mold is easy for installation, labor and material saving.Internal mold connects by carrying mounting bracket or special-purpose connecting elements, and internal mold does not need to establish in addition other reinforcing bar is installed when installing, both improved installation efficiency, has saved mounting material again, labor and material saving, good economy performance.
It two is that unit dark girt strip beam body is straight, and structure stress is reasonable.The internal mold accurate positioning, having solved prior art internal mold in work progress can arbitrarily move, and can't guarantee that dark rib and dark girt strip are straight, causes the big technical barrier that waits of beam section size construction error.
It three is that the anti-floating performance is strong.Internal mold is connected as a single entity with reinforcing bar is installed, and reinforcing bar is installed has been fixed on the soffit formwork, can guarantee that internal mold can not move because of buoyancy and other factors in construction.
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is that dark girt strip cross section, unit of the present invention is " worker " type unit dark girt strip cross section structure schematic diagram.
Fig. 2 is that dark girt strip cross section, unit of the present invention is a T-shape unit dark girt strip cross section structure schematic diagram.
Fig. 3 is the dark girt strip plated construction of steel bar concrete of the present invention construction process figure.
Fig. 4 is an internal mold plane of arrangement schematic diagram of the present invention.
Fig. 5 is the structural representation that the dark girt strip in unit of the present invention is unidirectional layout.
Fig. 6 is the structural representation that the dark girt strip in unit of the present invention is bidirectional arrangements.
Fig. 7 is that interior die clamper of the present invention is installed on the schematic diagram on the steel mesh reinforcement of plate top.
Fig. 8 be of the present invention in die clamper be installed on the schematic diagram on the steel mesh reinforcement at the bottom of the plate.
Fig. 9 is the schematic diagram on the connecting reinforcement about interior die clamper of the present invention is installed on.
Figure 10 is that interior die clamper of the present invention is that its internal mold clips the schematic diagram of transverse reinforcement (installation reinforcing bar) when belt supporting frame.
Figure 11 is that interior die clamper of the present invention is that its internal mold clips the schematic diagram of longitudinal reinforcement (installation reinforcing bar) when belt supporting frame.
Figure 12 be of the present invention in die clamper when being special-purpose connecting elements, the schematic diagram that internal mold is connected with the installation reinforcing bar.
Figure 13 is that special-purpose connecting elements of the present invention is the special-purpose connecting elements full-page proof of an open-type schematic diagram.
Figure 14 is that special-purpose connecting elements of the present invention is the special-purpose connecting elements full-page proof of fluting pass schematic diagram.
Figure 15 is that special-purpose connecting elements of the present invention is the special-purpose connecting elements full-page proof of band hook type schematic diagram.
Figure 16 is that internal mold of the present invention is installed the horizontal tube sectional schematic diagram in the full-page proof.
Figure 17 is that internal mold of the present invention is installed the suitable tube sectional schematic diagram in the full-page proof.
Figure 18 is that internal mold of the present invention is installed the local enlarged diagram along the tube section in the full-page proof.
Figure 19 is " worker " type cross section dark girt strip full-page proof schematic diagram in the dark girt strip full-page proof in unit of the present invention.
Figure 20 is the T-shape cross section dark girt strip full-page proof schematic diagram in the dark girt strip full-page proof in unit of the present invention.
Figure 21 is steel mesh reinforcement and a soffit formwork connection diagram at the bottom of the plate of the present invention.
Figure 22 is the existing internal mold of comparing with the present invention, and because of being forbidden to cause dark rib not straight in the location, only direction forms the floor map of dark girt strip structure.
Figure 23 is the existing internal mold of comparing with the present invention, is forbidden to cause dark rib not straight because of the location, and two direction does not all form the floor map of dark girt strip structure.
Figure 24 is that internal mold of the present invention is arranged by latticed installation, forms two-way evenly dark girt strip plated construction, and the dark girt strip of bidirectional cell is straight, the floor map of beam section uniformity.
Figure 25 is that internal mold of the present invention is installed arrangement by fan shape, forms two-way dark girt strip plated construction, and the dark girt strip in unit is straight, and beam section is the floor map of even gradual change.
Figure 26 is that internal mold of the present invention is arranged by latticed installation, forms two-way evenly dark girt strip plated construction, and the dark girt strip of bidirectional cell is straight, the plated construction schematic diagram of beam section uniformity.
Figure 27 is that internal mold of the present invention is installed arrangement by fan shape, forms two-way dark girt strip plated construction, and the dark girt strip in unit is straight, and beam section is the plated construction schematic diagram of even gradual change.
Figure 28 adopts among the present invention to adopt hollow cylindrical shell internal mold schematic diagram in the dark girt strip plated construction of the formed steel bar concrete of multi-form internal mold.
Figure 29 adopts among the present invention to adopt solid cylindrical shell internal mold schematic diagram in the dark girt strip plated construction of the formed steel bar concrete of multi-form internal mold.
Figure 30 adopts among the present invention to adopt cavity block internal mold schematic diagram in the dark girt strip plated construction of the formed steel bar concrete of multi-form internal mold.
Figure 31 adopts among the present invention to adopt solid block internal mold schematic diagram in the dark girt strip plated construction of the formed steel bar concrete of multi-form internal mold.
Figure 32 is in dark girt strip in unit of the present invention and the solid beam assembly, and solid beam is positioned at the dark girt strip structural representation of steel bar concrete of middle position.
Figure 33 is in dark girt strip in unit of the present invention and the solid beam assembly, and solid beam is positioned at the dark girt strip structural representation of steel bar concrete of marginal position.
Figure 34 is in dark girt strip in unit of the present invention and the solid beam assembly, the dark girt strip structural representation of steel bar concrete that solid beam equates with the dark girt strip deck-molding in unit.
The specific embodiment
Referring to Fig. 1,2,6, the dark girt strip plated construction of steel bar concrete of the present invention, it is made up of the dark girt strip 1 in a plurality of unit, and the dark girt strip 1 in each unit comprises reinforcing bar concrete hidden rib 3, steel bar concrete top board 4, the steel bar concrete base plate 5 between internal mold 2, the adjacent internal mold 2, and internal mold 2 is provided with and reinforcing bar 7 direct-connected anchor clamps 6.
Referring to accompanying drawing 1,2,4,5,6,19,20, the dark girt strip 1 in the unit of present embodiment, its cross section 11 mainly contains " worker " type 12 cross sections and T-shape 13 cross sections, the dark girt strip 1 of each " worker " type or T-shape is formed by the reinforcing bar concrete hidden rib between steel bar concrete top board 4, steel bar concrete base plate 5 and the adjacent internal mold 23, form the primary structure member in unit " worker " type or T-shape cross section, the dark girt strip 1 in a plurality of unit " worker " type or T-shape cross section is combined to form hidden rib contignation system.As long as internal mold 2, is accurately located in construction to by even gradual change regular arrangement in length and breadth, can form unidirectional or the bidirectional stress structure.When internal mold 2 when a direction is arranged in parallel, promptly formed the dark girt strip of this direction between the adjacent internal mold 2 of this direction, as Fig. 5; When internal mold is arranged in parallel at both direction in length and breadth, can form dark girt strip at this both direction, as Fig. 6.Equidirectional dark girt strip can be parallel to each other, or intersect; The dark girt strip of both direction is generally orthogonal, or arranged crosswise on request, and angle can be 0～90 °.Fig. 5 be present embodiment when a direction is arranged dark girt strip, the unidirectional dark girt strip 1 of formation promptly has only the beam and slab structure of the dark girt strip 1 in vertical unit; Fig. 6 be present embodiment when both direction is arranged dark girt strip simultaneously in length and breadth, the beam and slab structure that the two-way dark girt strip of formation promptly has dark girt strip in vertical unit 1 and the dark girt strip 1 of lateral cell to construct jointly.
Referring to accompanying drawing 4,5,6, the dark girt strip plated construction of the steel bar concrete of present embodiment, by in the floor bar concrete, arranging internal mold 2 regularly, as Fig. 4, make internal mold 2 its longitudinal axis conllinear of vertical one-tenth row, guarantee that the straight and sectional area of longitudinal reinforcement concrete hidden rib 3 equates, makes transverse rows of internal mold 2 its transversal line conllinear, guarantee that transverse reinforcement concrete hidden rib 3 is parallel to each other and sectional area equates, so just form the dark girt strip plated construction that is combined to form by the dark girt strip 1 in a plurality of unit.
Shown in accompanying drawing 1,2,5, a kind of dark girt strip of present embodiment is made up of the top board between adjacent two internal molds 2 vertical axis, base plate and dark rib, dark rib refers to set between the adjacent internal mold 2 the part steel bar concrete in the size range, its height equates that with internal mold 2 depth of sections it is thick to be generally 40～500mm.Steel bar concrete top board 4 and steel bar concrete base plate 5 refer to internal mold respectively more than 2 and the reinforced concrete slab of internal mold 2 below, and it is thick to be generally 30～120mm, and the dark relatively rib of its stress level is wanted height, and its internal mold 2 can place the middle part or the bottom of plated construction.Plate top steel mesh reinforcement 74 is set in the top board, steel mesh reinforcement 75 at the bottom of the plate is set in the base plate, connecting reinforcement 73 up and down is set in the dark rib, steel mesh reinforcement 75 at the bottom of plate top steel mesh reinforcement 74, the plate, connecting reinforcement 73 forms stress frames up and down, the internal force in the common receiving plate.
Referring to accompanying drawing 7,8,9,10,11,12,13,14,15, the sharpest edges of the dark girt strip plated construction of steel bar concrete of the present invention, be that internal mold 2 is provided with and reinforcing bar 7 direct-connected anchor clamps 6, these anchor clamps 6 are for carrying mounting bracket 61 or special-purpose connecting elements 62, and they are connected as a single entity internal mold 2 and steel mesh reinforcement.Carry opening 63, slotted eye 64 or crotch 65 that mounting bracket 61 or special-purpose connecting elements 62 ends are provided with and directly snap in the situation of plate top steel mesh reinforcement 74, see Fig. 7, directly snap in the situation of steel mesh reinforcement 75 at the bottom of the plate, see Fig. 8, directly snap in up and down the situation of connecting reinforcement 73 and see Fig. 9.Shown in Figure 10,11, interior die clamper 6 in the present embodiment is by its opening 63 from belt supporting frame 61 itself, slotted eye 64 or crotch 65, stent foot can directly be installed on the special-purpose installation reinforcing bar 71, also can directly be installed on up and down on connecting reinforcement 73 or other reinforcing bars.Shown in Figure 12,13,14,15, be the internal mold 2 of special-purpose connecting elements 62 to anchor clamps 6, its special-purpose connecting elements 62 ends are provided with opening 63, slotted eye 64 or crotch 65 equally.In order Fast Installation to use this special use connecting elements 62, the folder mouth size that reinforcing bar 71 diameters are set to be less than or equal to open-ended 63, slotted eye 64 or crotch 65 is installed generally.
Referring to accompanying drawing 10,11,12, reinforcing bar 71 is installed can be arranged vertically with internal mold 2, as Figure 10; Also can be arranged in parallel, as Figure 11, Figure 12 with internal mold.No matter interior die clamper 6 still carries special-purpose connecting elements 62 for carrying mounting bracket 61, and the opening 63 on the anchor clamps 6, slotted eye 64 or crotch 65 all can directly directly be installed to fast and install on reinforcing bar 71 and other the reinforcing bar.Therefore, the position of internal mold 2 is determined by the position that reinforcing bar 71 is installed.Need only the position of determining to install reinforcing bar 71 in the construction, internal mold can be located by design scheme naturally, so the fixing and spacer bars that reinforcing bar 71 is internal mold is installed.
Comprehensive accompanying drawing, reinforcing bar 7 mainly comprise steel mesh reinforcement 75 at the bottom of plate top steel mesh reinforcement 74, the plate, up and down connecting reinforcement 73, reinforcing bar 71 and other reinforcing bar are installed, as Fig. 7,8,9,10,11,12,16,17,18.
Comprehensive accompanying drawing, arrangement prestress reinforcing bar 72.But the dark girt strip 1 arrangement prestress reinforcing bar 72 in unit in the dark girt strip 1 in the unit that this prestressed reinforcement 72 can be arranged in a direction, or is arranged in the dark girt strip 1 in unit of both direction.Arrangement prestress reinforcing bar 72 in structure, this prestressed reinforcement 72 can be arranged in the beam in the side bar or other position, prestressed reinforcement 72 can be arranged in the cassette ceiling, and prestressed reinforcement 72 can be arranged in the dark girt strip of same direction, also can arrange in the dark girt strip of both direction simultaneously.Prestressed reinforcement 72 can be arranged in steel bar concrete top board 4, steel bar concrete base plate 5, the reinforcing bar concrete hidden rib 3, and prestressed reinforcement 72 also can be arranged in internal mold 2 bodies, and prestressed reinforcement 72 can be arranged in unit " worker " the type beam, also can be arranged in the unit T-shape beam.Prestressed reinforcement 72 arrangements are identical with other reinforcement placement mode.Accompanying drawing the 19, the 20th, present embodiment are furnished with the dark girt strip drawing in unit of prestressed reinforcement.
Comprehensive accompanying drawing, owing in concrete, be provided with internal mold 2, in concrete pouring process, internal mold 2 produces buoyancy upwards, thereby is being with steel mesh reinforcement to move up, and thus some tie points and connector 76 need be set on steel mesh reinforcement at the bottom of the plate 75, steel mesh reinforcement at the bottom of the plate 75 is connected and fixed with soffit formwork 18, with the buoyancy of negative function on internal mold 2, the general connector 76 that adopts of tie point is an iron wire, as Figure 16,17,18,21.
Accompanying drawing the 22, the 23rd, existing hollow beam plated construction is inaccurate because of the internal mold location, has caused internal mold 2 and the beam section 11 can not straight and dislocation.
Accompanying drawing the 24,25,26, the 27th, internal mold 2 of the present invention is arranged by force request and designing requirement.Internal mold 2 carries out the regular arrangement of even gradual change fully according to design scheme, to arrangement, the axis of internal mold is positioned on the vertical or fan-shaped in length and breadth grid, such as in length and breadth as Figure 24,25, make the internal mold longitudinal axis conllinear of vertical one-tenth row, transverse rows of internal mold axis of pitch conllinear.Because the regular arrangement of internal mold, dark the girt strip 1 straight and cross section 11 size uniformities in reinforcing bar concrete hidden rib 3 between the adjacent internal mold 2 and unit, perhaps the dark girt strip in unit cross section 11 clocklike increases or reduces or be the regular variation of even gradual manner, as Figure 25,27.Internal mold 2 fixed points are installed, and the anchor clamps 6 of internal mold 2 are from belt supporting frame 61 or special-purpose connecting elements 62, and their end is provided with and can directly be installed on opening 63, slotted eye 64 or the crotch of installing on the reinforcing bar 71 65.Each row or respectively arrange the internal mold central point parallel or intersection or extended line intersect at a point along the connecting line of plate length direction; Spacing equates or the arrangement of spacing according to certain rules between the internal mold central point, presses fan shape as Figure 25 internal mold and arranges.
Accompanying drawing 24 is that internal mold 2 of the present invention is by latticed installing and locating, internal mold 2 centers overlap with the grid intersection point, a direction of grid is row, another direction of grid is row, the center conllinear of the internal mold 2 on same column or the same row, with row or with listing between adjacent internal mold 2 central points apart from equating or spacing according to certain rules, spacing equidistantly or according to certain rules between the connecting line of internal mold central point of adjacent each row or each row, vertically become its longitudinal axis conllinear of internal mold of row, transverse rows of internal mold 2 its axis of pitch conllinear, dark rib in the dark girt strip of bidirectional cell that forms is orthogonal latticed, and unit dark girt strip beam body is straight, dark girt strip cross section uniformity.
Accompanying drawing 25 is that internal mold 2 of the present invention is by the fan shape installing and locating, the internal mold center overlaps with the fan shape intersection point, a direction of fan shape is row, another direction of fan shape is row, each row or respectively arrange the internal mold central point parallel or intersection or extended line intersect at a point along the connecting line of plate length direction, the center conllinear of the internal mold on same column or the same row, between the internal mold central point apart from equating or spacing according to certain rules, spacing equidistantly or according to certain rules between the connecting line of internal mold central point of adjacent each row or each row, vertically become its longitudinal axis conllinear of internal mold of row, its axis of pitch conllinear of transverse rows of internal mold, dark rib in the dark girt strip of bidirectional cell that forms becomes fan shape, unit dark girt strip beam body is straight, laterally dark girt strip cross section uniformity, the vertically dark even gradual change in girt strip cross section.
Accompanying drawing 26 is that internal mold 2 of the present invention is combined to form the dark girt strip plated construction of steel bar concrete by the dark girt strip in a plurality of unit, internal mold is by latticed installing and locating, the internal mold center overlaps with the grid intersection point, a direction of grid is row, another direction of grid is row, the center conllinear of the internal mold on same column or the same row, with row or with listing between the adjacent internal mold central point apart from equating or spacing according to certain rules, spacing equidistantly or according to certain rules between the connecting line of internal mold central point of adjacent each row or each row, vertically become its longitudinal axis conllinear of internal mold of row, its axis of pitch conllinear of transverse rows of internal mold, dark rib in the dark girt strip of bidirectional cell that forms becomes latticed, unit dark girt strip beam body is straight, dark girt strip cross section uniformity.
Accompanying drawing 27 is that internal mold 2 of the present invention is combined to form the dark girt strip plated construction of steel bar concrete by the dark girt strip in a plurality of unit, internal mold is pressed the fan shape installing and locating, the internal mold center overlaps with the grid intersection point, a fan-shaped direction is row, another fan-shaped direction is row, each row or respectively arrange the internal mold central point parallel or intersection or extended line intersect at a point along the connecting line of plate length direction, the center conllinear of the internal mold on same column or the same row, between the internal mold central point apart from equating or spacing according to certain rules, spacing equidistantly or according to certain rules between the connecting line of internal mold central point of adjacent each row or each row, vertically become its longitudinal axis conllinear of internal mold of row, its axis of pitch conllinear of transverse rows of internal mold, dark rib in the dark girt strip of bidirectional cell that forms becomes fan shape, unit dark girt strip beam body is straight, laterally dark girt strip cross section uniformity, the vertically dark even gradual change in girt strip cross section.
Accompanying drawing 22 because internal mold can not accurately locate, internal mold is laterally can not be in a row, the concrete hollow board of made laterally can not form the dark girt strip of straight stress unit, its stress performance with compare very different as Figure 24,25,26,27 formed dark girt strip plates.
Accompanying drawing 23, because internal mold can not accurately be located, internal mold vertically can not become row laterally can not be in a row, vertical and horizontal all can not form the dark girt strip of straight stress unit, the stress performance of hollowcore slab with compare very different as Figure 24,25,26,27 formed dark girt strip plates.
Referring to accompanying drawing 28,29,30,31, the dark girt strip plated construction of a kind of steel bar concrete of present embodiment, the body of its internal mold 2 is hollow cylindrical shell 21, solid block 22, solid cylindrical shell 23 or cavity block 24.The cross sectional shape of cylindrical shell 21 has circle, ellipse, square, polygon and other shape; The cross sectional shape of block 22 has square, cone, polyhedron.
Shown in Figure 32,33,34,6, the dark girt strip plated construction of present embodiment, the plated construction periphery can be provided with steel bar concrete solid beam 16, also can not establish solid beam 16; Other position along post 17 axial location or plate also can be provided with steel bar concrete solid beam 16; The height of solid beam 16 can form bright beam greater than the thickness of cassette ceiling; The height of solid beam 16 can equate with the thickness of hollowcore slab, form dark beam.The width of solid beam 16 can form wide-flat beam greater than depth of beam.
The dark girt strip plated construction of a kind of steel bar concrete of present embodiment is selected the fines concrete for use, uses the vibrator vibration compacting; Also can adopt self-compacting concrete, need not vibrate, can improve the compactness of concrete.
Accompanying drawing 3 is depicted as construction technology process block diagram of the present invention.In order to give full play to the location characteristics of internal mold 2 in construction, implement the best-of-breed technology scheme of the dark girt strip plated construction of steel bar concrete of the present invention, it is reasonable to reach structure stress, smooth at the bottom of the plate, the purpose of labor and material saving, its job practices comprises following several steps:
(1) lays soffit formwork 18;
(2) line is located, and determines the position of internal mold 2 and reinforcing bar 7;
(3) steel mesh reinforcement 75 and installation reinforcing bar 71 at the bottom of laying plate on the soffit formwork 18;
(4) some connectors 76 being set is fixed on steel mesh reinforcement at the bottom of the plate 75 on the soffit formwork 18;
(5) prestressed reinforcement 72 is set;
(6) internal mold 2 and anchor clamps 6 are installed, opening 63, slotted eye 64 or crotch 65 that anchor clamps 6 are provided with for the end from belt supporting frame 61 or special-purpose connecting elements 62 directly snap in installation reinforcing bar 71, internal mold 2 and installation reinforcing bar 71 are fixed on one, adjust the position that reinforcing bar 71 is installed, make the internal mold 2 longitudinal axis conllinear of vertical one-tenth row, transverse rows of internal mold 2 axis of pitch conllinear;
(7) lay connecting reinforcement 73 up and down;
(8) installing plate top steel mesh reinforcement 74 and fixing;
(9) concrete build, vibrate, maintenance;
(10) prestressed reinforcement 72 stretch-draw;
(11) stripping.
Used internal mold 2 in the above-mentioned construction, its concrete structure internal mold have the intensity height, from heavy and light, from the characteristics of carrying jig, be suitable for the internal mold of cast-in-place concrete hollow building roof.Now answer county magistrate's item to be described as follows with relevant in the construction:
The line location.The location that comprises reinforcing bar 7 and internal mold 2, because of internal mold 2 is fixed at the bottom of the plate on the steel mesh reinforcement 75, the location of reinforcing bar and internal mold at the bottom of the plate will be taken all factors into consideration in the line location, and want accurately the internal mold location, and reinforcing bar is according to circumstances evenly arranged or centralized arrangement in the rib width scope at the bottom of the plate.
Installing plate top steel mesh reinforcement 74.Note not trampling internal mold 2, prevent tube in-core mould 2 loose shifts of positioning and fixing.
Concreting.Can consider to adopt self-compacting concrete, if concrete will vibrate and should vibrate at intercostal, the intensity of vibrating should guarantee concrete closely knit, will guarantee that also internal mold 2 is reliable and stable, should be by building along the tube direction.Concrete slump should not be less than 160mm.The concrete coarse aggregate maximum particle diameter should not be greater than 1/2 of 1/2 and base plate thickness of rib width between the internal mold 2, and must not be greater than 31.5mm.
Before concreting, should conscientiously carry out quality examination, and carry out record of acceptance of concealed work, must observe " cast-in-situ hollow building roof structure technology rules " relevant requirements (CECS175:2004) soffit formwork, reinforcing bar and internal mold.
Claims (21)
1, the dark girt strip plated construction of a kind of steel bar concrete, it is characterized in that it comprises the dark girt strip in unit (1), internal mold (2), reinforcing bar (7), steel bar concrete, the dark girt strip in described unit (1) arranges that according to certain orientation the beam body is straight, beam section (11) uniformity or evenly gradual change.
2, the dark girt strip plated construction of steel bar concrete according to claim 1 is characterized in that being combined to form mutually between the dark girt strip in described unit (1) the dark girt strip plated construction of steel bar concrete.
3, the dark girt strip plated construction of steel bar concrete according to claim 1 is characterized in that the dark girt strip in described unit (1) is by the reinforcing bar concrete hidden rib (3) between internal mold (2), the adjacent internal mold (2), steel bar concrete top board (4), the integrated poured formation of steel bar concrete base plate (5).
4, the dark girt strip plated construction of steel bar concrete according to claim 1, it is characterized in that internal mold (2) in plate by latticed arrangement or press fan shape arrangement, a grid or a fan-shaped direction are row, grid or another fan-shaped direction are row, internal mold (2) fixed point is installed, internal mold (2) central point overlaps with grid or fan-shaped intersection point, vertically becomes its longitudinal axis conllinear of internal mold (2) of row, its axis of pitch conllinear of transverse rows of internal mold (2).
5, the dark girt strip plated construction of steel bar concrete according to claim 4 is characterized in that internal mold (2) fixed point installs, each row or respectively arrange the internal mold central point parallel or intersection or extended line intersect at a point along the connecting line of plate length direction.
6, the dark girt strip plated construction of steel bar concrete according to claim 4 is characterized in that the installation of internal mold (2) fixed point, and spacing equates or the arrangement of spacing according to certain rules between the internal mold central point.
7, the dark girt strip plated construction of steel bar concrete according to claim 1 is characterized in that the vertical or horizontal unidirectional layout of the dark girt strip in described unit (1).
8, the dark girt strip plated construction of steel bar concrete according to claim 1 is characterized in that the dark girt strip in described unit (1) bidirectional arrangements, 0～90 ° of the dark girt strip in both direction unit (1) axis angle.
9, the dark girt strip plated construction of steel bar concrete according to claim 1, the beam section (11) that it is characterized in that the dark girt strip in described unit (1) increases regularly or reduces along the beam length direction.
10, the dark girt strip plated construction of steel bar concrete according to claim 1 is characterized in that described internal mold (2) is provided with and the direct-connected anchor clamps of reinforcing bar (7) (6).
11, the dark girt strip plated construction of steel bar concrete according to claim 1, the anchor clamps (6) that it is characterized in that described internal mold (2) are from belt supporting frame (61) or special-purpose connecting elements (62), and their end is provided with and can directly be installed on opening (63), slotted eye (64) or the crotch of installing on the reinforcing bar (71) (65).
12, the dark girt strip plated construction of steel bar concrete according to claim 1, the body that it is characterized in that described internal mold (2) are hollow cylindrical shell (21), solid block (22), solid cylindrical shell (23) or cavity block (24).
13, the dark girt strip plated construction of steel bar concrete according to claim 12 is characterized in that the cross sectional shape of described hollow cylindrical shell (21) and solid cylindrical shell (23) is circular, ellipse, square or polygon.
14, the dark girt strip plated construction of steel bar concrete according to claim 12 is characterized in that the cross sectional shape of described solid block (22) and cavity block (24) is square, cone or polyhedron.
15, the dark girt strip plated construction of steel bar concrete according to claim 1 is characterized in that the beam section (11) of the dark girt strip in described unit (1) has " worker " type cross section (12) and T-shape cross section (13).
16, the dark girt strip plated construction of steel bar concrete according to claim 1 is characterized in that the dark girt strip in described unit (1) can make up with solid beam (16), and the height of this solid beam (16) is more than or equal to the height of the dark girt strip in unit (1).
17, the dark girt strip plated construction of steel bar concrete according to claim 1, it is characterized in that the dark girt strip in described unit (1) but arrangement prestress reinforcing bar (72), this prestressed reinforcement (72) can be arranged in the dark girt strip in unit (1) of a direction, or is arranged in the dark girt strip in unit (1) of both direction.
18, the dark girt strip plated construction of steel bar concrete according to claim 1, it is characterized in that described reinforcing bar (7) comprises steel mesh reinforcement (75) at the bottom of plate top steel mesh reinforcement (74), the plate, connecting reinforcement (73) and reinforcing bar (71) is installed up and down, on steel mesh reinforcement at the bottom of the plate (75), be provided with the connector (76) that several and soffit formwork (18) connect firmly.
19, the dark girt strip plated construction of steel bar concrete according to claim 1 is characterized in that the aggregate in the described steel bar concrete is selected fines for use, and concrete can be selected ordinary concrete or self-compacting concrete for use.
20, the job practices of the dark girt strip plated construction of a kind of steel bar concrete, its step is as follows:
(1) lays soffit formwork (18);
(2) line is located, and determines the position of internal mold (2) and reinforcing bar (7);
(3) steel mesh reinforcement (75) and installation reinforcing bar (71) at the bottom of soffit formwork (18) is gone up the laying plate;
(4) some connectors (76) being set is fixed on steel mesh reinforcement at the bottom of the plate (75) on the soffit formwork (18);
(5) prestressed reinforcement (72) is set;
(6) internal mold (2) and anchor clamps (6) are installed, opening (63), slotted eye (64) or crotch (65) that anchor clamps (6) are provided with for the end from belt supporting frame (61) or special-purpose connecting elements (62) directly snap in installation reinforcing bar (71), internal mold (2) and installation reinforcing bar (71) are fixed on one, adjust the position that reinforcing bar (71) is installed, make its longitudinal axis conllinear of internal mold (2) of vertical one-tenth row, its axis of pitch conllinear of transverse rows of internal mold (2);
(7) lay connecting reinforcement (73) up and down;
(8) installing plate top steel mesh reinforcement (74) and fixing;
(9) concrete build, vibrate, maintenance;
(10) prestressed reinforcement (72) stretch-draw;
(11) stripping.
21, the job practices of the dark girt strip plated construction of a kind of steel bar concrete according to claim 20, it is characterized in that in the step (6) it being that internal mold (2) is pressed latticed arrangement or pressed the fan shape arrangement in plate, a grid or a fan-shaped direction are row, grid or another fan-shaped direction are row, internal mold (2) directly snaps in installation reinforcing bar (71) by anchor clamps (6) and makes the internal mold installing and locating, internal mold (2) central point overlaps with grid or fan-shaped intersection point, vertically become its longitudinal axis conllinear of internal mold (2) of row, its axis of pitch conllinear of transverse rows of internal mold (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100322951A CN100359110C (en) | 2005-10-25 | 2005-10-25 | Steel reinforced concrete hidden rib contignation system and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100322951A CN100359110C (en) | 2005-10-25 | 2005-10-25 | Steel reinforced concrete hidden rib contignation system and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN1752370A CN1752370A (en) | 2006-03-29 |
| CN100359110C true CN100359110C (en) | 2008-01-02 |
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| CNB2005100322951A Expired - Fee Related CN100359110C (en) | 2005-10-25 | 2005-10-25 | Steel reinforced concrete hidden rib contignation system and construction method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071808B (en) * | 2011-01-13 | 2012-09-26 | 中建四局第三建筑工程有限公司 | Anti-floating positioning method and structure for core mould pipe |
| CN102185464B (en) * | 2011-03-28 | 2014-03-12 | 中国电力科学研究院 | Insulating beam for high-voltage direct current (DC) converter valve |
| CN104141356B (en) * | 2013-12-17 | 2017-02-22 | 中国建筑第四工程局有限公司 | Anti-floating method and structure for LPM (lumped plasticity model) hollow die construction |
| CN109356310A (en) * | 2018-11-15 | 2019-02-19 | 东南大学 | A kind of high-performance hollow floor slab-column connections |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2417223Y (en) * | 2000-03-23 | 2001-01-31 | 梁军 | Floor structure cast in situ with reinforcement inside |
| CN1349029A (en) * | 2001-12-10 | 2002-05-15 | 邱则有 | Tubular, hollow and steel bar reinforced concrete floor member |
| CN2522494Y (en) * | 2002-01-28 | 2002-11-27 | 邱则有 | Steel reinforced concrete structure floor |
| CN2668762Y (en) * | 2003-11-19 | 2005-01-05 | 李海深 | Reinforced concrete inner die water fixing support |
-
2005
- 2005-10-25 CN CNB2005100322951A patent/CN100359110C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2417223Y (en) * | 2000-03-23 | 2001-01-31 | 梁军 | Floor structure cast in situ with reinforcement inside |
| CN1349029A (en) * | 2001-12-10 | 2002-05-15 | 邱则有 | Tubular, hollow and steel bar reinforced concrete floor member |
| CN2522494Y (en) * | 2002-01-28 | 2002-11-27 | 邱则有 | Steel reinforced concrete structure floor |
| CN2668762Y (en) * | 2003-11-19 | 2005-01-05 | 李海深 | Reinforced concrete inner die water fixing support |
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| CN1752370A (en) | 2006-03-29 |
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