CN212802185U - Prefabricated steel bar truss floor of assembled form removal-free - Google Patents
Prefabricated steel bar truss floor of assembled form removal-free Download PDFInfo
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- CN212802185U CN212802185U CN202021243276.XU CN202021243276U CN212802185U CN 212802185 U CN212802185 U CN 212802185U CN 202021243276 U CN202021243276 U CN 202021243276U CN 212802185 U CN212802185 U CN 212802185U
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Abstract
The utility model discloses an assembly type disassembly-free prefabricated steel bar truss floor slab, which comprises a template system and a concrete structural body; the steel bar truss structure is characterized in that the template system is formed by splicing a plurality of independent template system units, and the steel bar truss of each non-dismantling template system unit is lapped on the structural beam; continuous first bottom layer steel bars consistent with the direction of the steel bar line frames are laid between the adjacent steel bar line frames, second bottom layer steel bars are laid above the lower chord steel bars along the direction perpendicular to the steel bar line frames, and the crossed parts of the first bottom layer steel bars and the second bottom layer steel bars are bound and connected; welding an upper-layer structural rib net on the upper surface of the template system steel bar truss; closely knit the filling concrete in the whole steel construction that foretell template system and superstructure muscle formed, form prefabricated steel bar truss after the concrete sets and exempt from the form removal floor. The utility model has the advantages of simple structure, be convenient for process, improve the efficiency of construction, the rigidity is good.
Description
Technical Field
The utility model belongs to the technical field of building engineering, especially, relate to an assembled exempts from prefabricated steel bar truss floor of tear-open mould.
Background
At present, floor panels of buildings mainly have two forms, one is a precast slab, and the other is a cast-in-place concrete floor. The prefabricated slab floor slab is installed in the modes of ground prefabrication forming and field hoisting, and has the advantages of high construction speed and low cost. However, the existing precast slab floor slab is lack of effective connection with the wall body, and is easy to loosen and fall off when encountering natural disasters such as earthquakes and the like, thereby causing property loss and even casualties. In addition, after the assembly of the existing precast slab floor slabs is finished, certain gaps exist among the floor slabs, and ceiling cracks are generated due to improper treatment, so that the appearance is not only influenced, but also water leakage and other phenomena can be generated.
The cast-in-place concrete floor slab overcomes some defects of the precast slab floor slab, and can greatly improve the shock resistance of the building. However, the construction of the cast-in-place concrete floor requires a series of operations such as erecting a support frame on site, laying a formwork on the support frame, laying reinforcing steel bars in the formwork, and then pouring concrete. In the traditional floor construction engineering, the wood template is adopted for floor construction, and the defects of resource waste, large form removal loss, large quantity of floor support tools, high construction cost and the like exist. In order to overcome the defect of floor construction by using a wood template, the cast-in-place precast concrete composite slab is provided, but the existing cast-in-place precast concrete composite slab has the disadvantages of heavy weight, low factory processing speed, complex transportation and hoisting construction and high bearing requirement of a floor supporting tool.
In addition, the steel bar truss floor bearing plate of the cast-in-place concrete composite slab is formed by adopting a steel bar truss and a galvanized bottom template as main parts and connecting the steel bar truss and the galvanized bottom template together through resistance spot welding or a connector to form a welding type or assembly type steel bar truss floor bearing plate. In the construction process of the steel bar truss and the galvanized bottom template in the prefabricated residential building, the problems of the welded steel bar truss floor bearing plate exist: a) the galvanized bottom template is difficult to remove from the bottom of the floor slab; b) the roof decoration is affected due to the corrosion of the bottom feet of the steel bar truss; c) the footing of the steel bar truss generates sagging deformation when the galvanized template is removed, and the whitewash at the bottom of the floor slab is influenced; d) the labor intensity is high, and the labor cost is high; during the construction process of the steel bar truss and the galvanized bottom template in the assembled residential building, the assembled steel bar truss floor bearing plate has the following problems: a) the material cost is greatly improved by adopting a thicker galvanized steel template; b) the connecting piece for connecting the steel bar truss and the bottom template has low use efficiency; c) the reuse times of the galvanized template and the connecting piece are lower; d) the problems of more labor, high labor cost and high labor intensity exist.
Therefore the utility model provides a simple structure, be convenient for processing, improve the efficiency of construction's exempt from to strut or adopt the assembly of letter support to exempt from to tear open mould precast steel bar truss floor.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a simple structure, be convenient for processing, improve the efficiency of construction exempt from to strut or adopt the simple fabricated formwork-dismantling-free precast steel bar truss floor who struts.
The utility model is realized in such a way that the prefabricated reinforced truss floor slab without disassembling the mould comprises a template system and a concrete structure body; the steel bar truss structure is characterized in that the template system is formed by splicing a plurality of independent template system units, and the steel bar truss of each non-dismantling template system unit is lapped on the structural beam; continuous first bottom layer steel bars consistent with the direction of the steel bar line frames are laid between the adjacent steel bar line frames, second bottom layer steel bars are laid above the lower chord steel bars along the direction perpendicular to the steel bar line frames, and the crossed parts of the first bottom layer steel bars and the second bottom layer steel bars are bound and connected; welding an upper-layer structural rib net on the upper surface of the template system steel bar truss; closely knit the filling concrete in the whole steel construction that foretell template system and superstructure muscle formed, form prefabricated steel bar truss after the concrete sets and exempt from the form removal floor.
Preferably, the formwork system unit comprises a prefabricated integral formwork, a steel bar truss and a disassembly-free formwork compatible with concrete; the prefabricated integral formwork comprises a transverse steel member and a longitudinal steel member, and the transverse steel member and the longitudinal steel member are welded into a frame; the lower surface of the welded prefabricated integral die carrier is a datum plane; at least one steel bar truss is lapped on the upper surface of the prefabricated integral formwork along the direction of the transverse steel member or the longitudinal steel member; the lower chord rib of the steel bar truss is lapped and prefabricated on the upper surface of the integral formwork and is fixedly connected with the prefabricated integral formwork through welding or binding; laying a non-dismantling template on the reference surface side of the prefabricated integral formwork; the non-dismantling formwork is fixedly connected with the prefabricated integral formwork through a fastener.
Above-mentioned technical scheme is preferred, prefabricated whole die carrier still including middle steel member, the both ends of middle steel member and the horizontal steel member or the vertical steel member welded connection who corresponds the side.
Preferably, in the technical scheme, the transverse steel member and/or the longitudinal steel member at least comprises a lower supporting part, the lower surface of the lower supporting part is a horizontal reference surface, and the upper supporting part is used for supporting the steel bar truss; the lower supporting part and the upper supporting part vertical plate are connected.
Above-mentioned technical scheme is preferred, the height that the upper surface of upper support portion is apart from lower reference surface is not less than 15 mm.
Above-mentioned technical scheme is preferred, the cross sectional shape C type, I shape, L type, T type, rectangle or several font of horizontal steel member and longitudinal steel member.
According to the preferable technical scheme, the vertical plates of the transverse steel member and the longitudinal steel member are provided with slurry passing holes.
According to the preferable technical scheme, the connecting side of the disassembly-free template and the prefabricated integral frame is provided with a groove or is provided with an irregular bulge by adopting galling treatment.
According to the preferable technical scheme, a steel mesh is pre-embedded in the non-dismantling formwork.
The utility model has the advantages and positive effect: the utility model can be installed in factory prefabrication field; compared with the traditional wood formwork, the formwork removal construction is reduced, and the service life of the wood formwork is as long as that of a floor slab; compared with the traditional floor bottom die support, the disassembly-free floor composite slab has the advantages of high rigidity, good integrity, simple support tool or no support; compared with a concrete prefabricated laminated slab, the disassembly-free floor bearing plate has the advantages of light dead weight and high cast-in-place construction quality. Compared with the existing cast-in-place precast concrete composite slab, the cast-in-place precast concrete composite slab has the advantages of light dead weight, high factory processing speed, easiness in transportation and hoisting, low bearing requirement on a floor slab supporting tool, high cast-in-place construction quality and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the present template system architecture;
FIG. 3 is a rear view of FIG. 2;
FIG. 4 is a schematic perspective view of FIG. 2;
FIG. 5 is a left side view of FIG. 2;
FIG. 6 is a schematic view of the connection structure of the prefabricated integral formwork and the non-dismantling formwork of the present invention;
FIG. 7 is a rear view of FIG. 6;
FIG. 8 is a view taken along direction K in FIG. 6;
FIG. 9 is a schematic perspective view of FIG. 6;
FIG. 10 is a schematic view of a prefabricated integral formwork structure;
FIG. 11 is a schematic view of a disassembly-free form;
FIG. 12 is a partial structure view of a demolition-free form with steel mesh;
FIG. 13 is a transverse or longitudinal steel member with grout holes;
fig. 14 is a schematic diagram of a division of geometric units of a certain house type.
In the figure, 1, prefabricating an integral die carrier; 1-1, transverse steel members; 1-10, a lower support part; 1-11, a horizontal reference plane; 1-12, an upper support part; 1-13, passing through a pulp hole; 1-2, longitudinal steel members; 1-3, a reference plane; 1-4, intermediate steel members; 2. a template is not required to be disassembled; 2-1, a groove; 2-2, a steel mesh; 3. a fastener; 4. a steel bar truss; 5. a concrete structure; 6. a first bottom layer of reinforcement; 7. a second bottom layer of reinforcement; 8. the upper layer structure rib net.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 14, an assembly type formwork-dismantling-free precast steel bar truss floor slab includes a formwork system and a concrete structure; the steel bar truss structure is characterized in that the template system is formed by splicing a plurality of independent template system units, and the steel bar truss of each non-dismantling template system unit is lapped on the structural beam; uninterrupted first bottom layer steel bars 6 consistent with the direction of the steel bar line frames are laid between the adjacent steel bar line frames, second bottom layer steel bars are laid above the lower chord steel bars along the direction perpendicular to the steel bar line frames, and the crossed parts of the first bottom layer steel bars and the second bottom layer steel bars are bound and connected; welding an upper-layer structural rib net 8 on the upper surface of the template system steel bar truss; closely knit the filling concrete in the whole steel construction that foretell template system and superstructure muscle formed, form prefabricated steel bar truss after the concrete sets and exempt from the form removal floor.
Preferably, the formwork system unit comprises a prefabricated integral formwork 1, a steel bar truss 4 and a non-dismantling formwork 2 compatible with concrete; the non-dismantling formwork is a non-metallic concrete compatible plate with a certain bearing capacity, such as a cement fiberboard and a calcium silicate board; the prefabricated integral formwork comprises transverse steel members 1-1 and longitudinal steel members 1-2, and the transverse steel members and the longitudinal steel members are welded into a frame; the lower surface of the welded prefabricated integral die carrier is a datum plane; at least one steel bar truss is lapped on the upper surface of the prefabricated integral formwork along the direction of the transverse steel member or the longitudinal steel member; the lower chord rib of the steel bar truss 4 is lapped on the upper surface of the prefabricated integral formwork and is fixedly connected with the prefabricated integral formwork through welding or binding; laying a non-dismantling template 2 on the reference surface side of the prefabricated integral mould frame; the non-dismantling template is fixedly connected with the prefabricated integral die frame through a fastener 3, the fastener preferably has certain cutting force, and meanwhile, a self-tapping screw with a certain self-locking function is adopted, so that the stability and firmness of the non-dismantling template and the prefabricated integral frame after connection are ensured; before concrete pouring, the disassembly-free template is equivalently hung on the prefabricated integral frame, the integral bending and pressure resistance of the disassembly-free template is improved through the prefabricated integral die carrier, the safety is improved, after the concrete is solidified after pouring, the disassembly-free template is compatible with the disassembly-free template to form an integral structure, the prefabricated automatic screws are equivalently embedded in the concrete, and then the disassembly-free template and the structure form a structure body with the same service life.
The utility model can be installed in factory prefabrication field; compared with the traditional wood formwork, the formwork removal construction is reduced, and the service life of the wood formwork is as long as that of a floor slab; compared with the traditional floor bottom die support, the disassembly-free floor composite slab has the advantages of high rigidity, good integrity, simple support tool or no support; compared with a concrete prefabricated laminated slab, the disassembly-free floor bearing plate has the advantages of light dead weight and high cast-in-place construction quality. Compared with the existing cast-in-place precast concrete composite slab, the cast-in-place precast concrete composite slab has the advantages of light dead weight, high factory processing speed, easiness in transportation and hoisting, low bearing requirement on a floor slab supporting tool, high cast-in-place construction quality and the like.
Above-mentioned technical scheme is preferred, prefabricated whole die carrier still including middle steel member, the both ends of middle steel member and the horizontal steel member or the vertical steel member welded connection who corresponds the side. The strength of the integral die frame is improved for the intermediate steel member of the prefabricated integral die frame with larger size, the force is uniformly dispersed, and the safety and the reliability of a template system are ensured.
Preferably, in the technical scheme, the transverse steel member and/or the longitudinal steel member at least comprises 1-10 parts of a lower supporting part, the lower surface of the lower supporting part is a horizontal reference surface, and the horizontal reference surface ensures that the transverse steel member and/or the longitudinal steel member are also a horizontal reference surface after being spliced into a frame, so that the flatness of the spliced non-dismantling formwork is ensured, and a foundation is laid for later-stage painting leveling; an upper supporting part 1-11 for supporting the steel bar truss, wherein the upper supporting part is used as a foundation for supporting the steel bar truss, so that the stability of the steel bar truss support is ensured; the vertical plate 1-12 is connected with the lower supporting part and the upper supporting part, the vertical plate mainly plays a role of bearing and supporting, and meanwhile, the vertical plate has a certain height; the height between the upper surface of the upper supporting part and the lower reference surface is not less than 15mm, and the design of the distance ensures that a concrete protective layer is formed after concrete is poured, so that the main stressed bearing member steel bar truss is not exposed, and the service life of the structure body is prolonged.
Above-mentioned technical scheme is preferred, the cross sectional shape C type, I shape, L type, T type, rectangle or several fonts of horizontal steel member and vertical steel member, the C type structure that this embodiment is preferred to two webs of C type channel-section steel are inwards equipped with and bend, treat to pour closely knit filling concrete in the C type groove and solidify the back and form firm connection structure with the concrete structure, improve the installation strength of prefabricating whole die carrier 1.
Preferably, slurry passing holes 1-13 are formed in vertical plates of the transverse steel member and the longitudinal steel member, please refer to fig. 13, the slurry passing holes are designed to facilitate communication of concrete on two sides of the vertical plates and dense filling of the concrete, and reinforcing steel bars can transversely penetrate through the slurry passing holes to improve structural strength; in addition, the weight is reduced without affecting the supporting strength.
Above-mentioned technical scheme is preferred, steel bar truss's both ends surpass and exempt from to tear open the template, make steel bar truss's tip overlap joint in the structure roof beam, guarantee that steel bar truss can stably overlap in the structure that corresponds, its length that stretches out is decided according to the design requirement.
According to the preferable technical scheme, the connecting side of the non-dismantling formwork 2 and the prefabricated integral framework is provided with a groove 2-1 or is provided with an irregular bulge by adopting roughening treatment.
Preferably, the steel net 2-2 is embedded in the non-dismantling formwork, please refer to fig. 12. The stress performance of the non-dismantling formwork is improved.
The construction method is based on the fabricated form-removal-free prefabricated steel bar truss floor; the method is characterized in that: the method mainly comprises the following steps:
s1, according to the house type diagram, geometrically dividing the floor slab according to the arrangement direction of the beams, and dividing the floor slab into a plurality of square geometric units, please refer to fig. 14;
s2, manufacturing and splicing the non-dismantling template system monomer which forms the independent geometric unit according to the size of the geometric unit divided in the step 1;
1) prefabricating a frame: manufacturing transverse steel members and longitudinal steel members and/or middle steel members according to the house type diagram; paving a transverse steel member and a longitudinal steel member and/or an intermediate steel member on an upper reference surface of a welding platform of welding equipment, splicing the transverse steel member and the longitudinal steel member into a frame, and then starting the welding equipment to weld to form a prefabricated integral die carrier monomer;
2) and prefabricating the steel bar truss: transferring the prefabricated integral formwork monomer to a prefabricated steel bar truss station, carrying a steel bar truss on the upper surface of the prefabricated integral formwork monomer on a reference platform of the station, and then binding or welding to relatively fix the prefabricated integral formwork monomer and the steel bar truss;
3) laying a non-dismantling formwork; turning the prefabricated integral formwork with the steel bar trusses by 90 degrees or 180 degrees to enable a reference plane of the prefabricated integral formwork to face an operator, then flatly laying a prefabricated size disassembly-free formwork on the reference plane of the prefabricated integral formwork, and then fixedly connecting the disassembly-free formwork with a transverse steel member and a longitudinal steel member and/or an intermediate steel member of the formwork through self-tapping;
4) and numbering; numbering the floor plates according to a house type figure, and then stacking the floor plates according to the numbers; the numbering rules are arranged according to actual needs, and the purpose is to facilitate on-site laying;
s3, hoisting and splicing the geometric units according to the pre-arranged numbering sequence; then, the non-dismantling template system monomers are fully paved on the whole floor in sequence;
s4, paving uninterrupted first bottom layer steel bars in the same direction as the steel bar line frames between the adjacent steel bar line frames, paving second bottom layer steel bars above the lower chord steel bars along the direction perpendicular to the steel bar line frames, and binding and connecting the intersections of the first bottom layer steel bars and the second bottom layer steel bars; welding an upper-layer structural rib net on the upper surface of the template system steel bar truss;
and S5, densely filling concrete in the integral steel structure formed by the template system and the upper-layer structural bars, and forming the prefabricated steel bar truss formwork-dismantling-free floor after the concrete is solidified.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. An assembled form-removal-free prefabricated steel bar truss floor comprises a template system and a concrete structure body; the steel bar truss structure is characterized in that the template system is formed by splicing a plurality of independent template system units, and the steel bar truss of each non-dismantling template system unit is lapped on the structural beam; continuous first bottom layer steel bars consistent with the direction of the steel bar line frames are laid between the adjacent steel bar line frames, second bottom layer steel bars are laid above the lower chord steel bars along the direction perpendicular to the steel bar line frames, and the crossed parts of the first bottom layer steel bars and the second bottom layer steel bars are bound and connected; welding an upper-layer structural rib net on the upper surface of the template system steel bar truss; closely knit the filling concrete in the overall structure that foretell template system and superstructure muscle formed, form prefabricated steel bar truss after the concrete sets and exempt from the form removal floor.
2. The prefabricated steel bar truss floor of claim 1, wherein: the template system unit comprises a prefabricated integral formwork, a steel bar truss and a disassembly-free template compatible with concrete; the prefabricated integral formwork comprises a transverse steel member and a longitudinal steel member, and the transverse steel member and the longitudinal steel member are welded into a frame; the lower surface of the welded prefabricated integral die carrier is a datum plane; at least one steel bar truss is lapped on the upper surface of the prefabricated integral formwork along the direction of the transverse steel member or the longitudinal steel member; the lower chord rib of the steel bar truss is lapped and prefabricated on the upper surface of the integral formwork and is fixedly connected with the prefabricated integral formwork through welding or binding; laying a non-dismantling template on the reference surface side of the prefabricated integral formwork; the non-dismantling formwork is fixedly connected with the prefabricated integral formwork through a fastener.
3. The prefabricated steel bar truss floor of claim 1, wherein: the prefabricated integral formwork further comprises an intermediate steel member, and two ends of the intermediate steel member are connected with the transverse steel member or the longitudinal steel member on the corresponding side in a welded mode.
4. The prefabricated steel bar truss floor of claim 2, wherein: the transverse steel member and/or the longitudinal steel member at least comprise a lower supporting part, the lower surface of the lower supporting part is a horizontal reference surface, and the upper supporting part is used for supporting the steel bar truss; the lower supporting part and the upper supporting part vertical plate are connected.
5. The prefabricated steel bar truss floor of claim 4, wherein: the height of the upper surface of the upper supporting part from the lower reference surface is not less than 15 mm.
6. The prefabricated steel bar truss floor of claim 1, wherein: the cross sections of the transverse steel members and the longitudinal steel members are C-shaped, I-shaped, L-shaped, T-shaped, rectangular or n-shaped.
7. The prefabricated steel bar truss floor of claim 2, wherein: and slurry passing holes are formed in the vertical plates of the transverse steel member and the longitudinal steel member.
8. The prefabricated steel bar truss floor of claim 1, wherein: the connecting side of the non-dismantling formwork and the prefabricated integral framework is provided with a groove or is provided with a bulge by adopting napping treatment.
9. The prefabricated steel bar truss floor of claim 1, wherein: and a steel mesh is pre-embedded in the non-dismantling formwork.
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| CN202021243276.XU CN212802185U (en) | 2020-06-30 | 2020-06-30 | Prefabricated steel bar truss floor of assembled form removal-free |
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| CN202021243276.XU CN212802185U (en) | 2020-06-30 | 2020-06-30 | Prefabricated steel bar truss floor of assembled form removal-free |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059703A (en) * | 2021-12-07 | 2022-02-18 | 四川省欧威新型建材有限公司 | Disassembly-free bottom die steel bar truss concrete floor support plate and forming method thereof |
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2020
- 2020-06-30 CN CN202021243276.XU patent/CN212802185U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059703A (en) * | 2021-12-07 | 2022-02-18 | 四川省欧威新型建材有限公司 | Disassembly-free bottom die steel bar truss concrete floor support plate and forming method thereof |
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