CN218667862U - Combined structure of prefabricated floor slab and beam - Google Patents
Combined structure of prefabricated floor slab and beam Download PDFInfo
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- CN218667862U CN218667862U CN202222602469.5U CN202222602469U CN218667862U CN 218667862 U CN218667862 U CN 218667862U CN 202222602469 U CN202222602469 U CN 202222602469U CN 218667862 U CN218667862 U CN 218667862U
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Abstract
The utility model discloses a prefabricated floor and beam combined structure, which comprises a prefabricated floor and a beam, wherein the prefabricated floor is lapped on the beam and is integrated with the beam after being in place; the utility model adopts the structure that the prefabricated floor slab is lapped on the beam and is directly cast in situ with the beam into a whole, thereby being convenient for construction and simultaneously avoiding the problems of more binding steel bars, large difficulty, low concrete pouring efficiency and difficult control of construction quality on site; the cast-in-place construction can be completed by installing the prefabricated floor slab in place, the prefabricated floor slab and the beam are subjected to factory processing and assembly construction, the construction process is simplified, the problems of complex construction process and low construction efficiency caused by the problems of steel bar binding on site and cast-in-place in the prior art are solved, the construction cost is reduced, and the connection quality of assembly points is ensured.
Description
Technical Field
The utility model relates to a civil engineering technical field, concretely relates to composite construction of prefabricated floor and roof beam.
Background
The assembly type structure system is an assembly structure system which is researched more at home and abroad at present, and has the advantages that the assembly is performed on the spot in a factory, the spot construction and maintenance time is saved, and the building construction efficiency is higher. The fabricated building system generally comprises a main building structure formed by prefabricated columns or shear walls, primary and secondary beams and floor slabs, and the assembly relation among the structures is mainly reflected in the process of the transfer construction. To realize a rotating distribution type building structure, most structures of columns, walls, beams and floor slabs are required to be prefabricated. In order to ensure the lightness of the hoisting structure and the firmness and stability of the hoisting structure after assembly, concrete superposed members or prefabricated members such as prefabricated laminated slabs, superposed beams, various prefabricated columns, prefabricated shear walls and the like appear in succession, but the integral assembly of the structure is not realized well. For example, large-area on-site reinforcement and post-cast concrete still exist in the composite floor slab, and more temporary supports are still needed during construction; structurally and in the construction process, the prefabricated concrete floor slab is not assembled in the complete sense, the construction efficiency is low, the range of a cast-in-place layer of the floor slab is large, and the assembly degree is low.
Therefore, the assembly joints of the existing assembly type concrete building structure are required to be improved wholly or partially, the construction process is simplified, the problems that the construction process is complex and the construction efficiency is low due to the fact that a large number of steel bars are bound and the problems of in-situ pouring are solved, the construction cost is reduced, and the connection quality is guaranteed.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a novel prefabricated floor and beam's integrated configuration simplifies the work progress, avoids finally leading to the problem that work progress is complicated, the efficiency of construction is low because a large amount of ligature reinforcing bars and cast in situ problem, reduces construction cost and guarantees the connection quality.
The utility model provides a composite construction of precast floor and roof beam, including precast floor and roof beam, the precast floor overlap joint is in the roof beam, takes one's place the back and forms integratively with the roof beam.
Furthermore, the end parts of the prefabricated floor slabs, which are used for lap joint, form step-type gaps, and the step-type gaps are integrally formed with the corresponding beams after the prefabricated floor slabs are placed in place.
Furthermore, a set distance is reserved between the end parts of the opposite precast floor slabs which are lapped on the same beam, the top surface of the beam is subjected to rough treatment, and shear keys are embedded at the set distance.
Further, the step-type gaps are subjected to surface roughening treatment, and cast-in-place strips are formed between the step-type gaps of the opposite precast floor slabs on the same beam in an overlapping mode.
Further, the upper portion of relative precast floor is indulged the muscle and is indulged the muscle with the lower part and all stretches out and the muscle is indulged to at least upper portion and is connected correspondingly.
Furthermore, an additional reinforcing steel bar for reinforcing the strength of the cast-in-place belt is arranged in the cast-in-place belt.
Further, the additional reinforcing steel bars comprise additional longitudinal bars perpendicular to the length direction of the beam and additional transverse bars parallel to the beam direction.
Further, the shear key is a steel bar, a stud or a section steel.
Furthermore, at least upper longitudinal bars between the opposite precast floor slabs are correspondingly connected through a hook structure.
Further, the beams include prefabricated main beams and prefabricated sub-beams.
The utility model has the advantages that: the utility model provides a prefabricated floor and beam combined structure, which adopts a structure that the prefabricated floor is lapped on the beam and is directly cast in situ with the beam into a whole, thereby facilitating construction and simultaneously avoiding the problems of more steel bars, high difficulty, low concrete pouring efficiency and difficult control of construction quality during on-site binding; the cast-in-place construction can be completed by installing the prefabricated floor slab in place, the prefabricated floor slab and the beam are subjected to factory processing and assembly construction, the construction process is simplified, the problems of complex construction process and low construction efficiency caused by the problems of steel bar binding on site and cast-in-place in the prior art are solved, the construction cost is reduced, and the connection quality of assembly points is ensured.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a longitudinal elevational cross-sectional view of a precast floor slab;
fig. 2 is a schematic view of connection between a prefabricated floor slab and a prefabricated main beam or a prefabricated secondary beam.
1. A beam; 2, prefabricating a floor slab; 201. a stepped notch; 3. an upper longitudinal rib; 4. lower longitudinal ribs; 5. transversely adding reinforcing steel bars; 6. longitudinally adding reinforcing steel bars; 7. a shear key; 8. and (4) casting a belt in situ.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail.
The precast floor slab and beam combined structure comprises a beam 1 and a precast floor slab 2, wherein the precast floor slab 2 is lapped on the beam 1 and is integrated with the beam after being in place; the beam 1 generally comprises a prefabricated main beam and a prefabricated secondary beam, of course, the form of the main beam and the secondary beam is not limited, the main beam and the secondary beam can be of a cast-in-place or superposed structure, and an assembly structure can be better embodied by prefabrication, which is not described herein again; the prefabricated floor slab is lapped on the beam and then poured with the beam into a whole, so that the structure is simple, and the construction is convenient and quick;
during construction, the prefabricated floor slab 2 is lapped on the corresponding prefabricated main beam or the corresponding prefabricated secondary beam, a step gap 201 is formed at the end part of the prefabricated floor slab 2 for lapping, and the prefabricated floor slab is cast in place at the step gap 201 to be integrated with the corresponding prefabricated main beam or the corresponding prefabricated secondary beam; the step type gap 201 means that the prefabricated floor slab forms a sinking platform at one end connected with the beam, a pouring belt is formed in the end head of the sinking platform and the step and is poured with the beam into a whole, the prefabricated structure is convenient to produce and process, the main range of the floor slab is formed in one step, a large-area cast-in-place layer is not arranged, the assembly degree is high, the bearing capacity of the floor slab in the construction stage is high, the temporary support is less than that of the traditional laminated slab, the construction efficiency is high, the influence of the thickness of the slab on the cast-in-place layer is small, and the economical efficiency is good.
In the structure, the main beam, the secondary beam and the floor slab are prefabricated components, the production and the processing are convenient, the main range of the floor slab is formed in one step, a large-area cast-in-place layer is not arranged, the assembly degree is high, the bearing capacity of the floor slab in the construction stage is high, the temporary support is less than that of the traditional laminated slab, the construction efficiency is high, the influence of the cast-in-place layer on the plate thickness is small, and the economy is good; the cast-in-place belt adopts a step-type notch structure, the cast-in-place structural area of the cast-in-place belt can be ensured, and the longitudinal bar connection and bar arrangement construction in the cast-in-place construction process are convenient.
In the embodiment, a set distance is reserved between the end parts of the opposite precast floor slabs 2 overlapped on the same precast main beam or precast secondary beam, the top surfaces of the precast main beam and the precast secondary beam are subjected to rough treatment, and a shear key 7 is embedded at the set distance; the set pitch forms part of a cast in place strip and is provided with shear keys 7 which, as previously described, may be shear studs, shear bars, profiled bars and other shaped shear structures.
The shear key mounting holes are correspondingly pre-embedded in the top of the beam 1 and the shear keys 7, and naturally, the shear keys can also be directly pre-embedded and poured, which is not described herein again; in the embodiment, the cast-in-place strip and the corresponding beam form a firm integral structure through the cast-in-place of the partial structure and the arrangement of the step-type gap of the prefabricated floor slab;
the step-type gap 201 is subjected to surface roughening treatment, a cast-in-place strip 8 is formed between step-type gaps of opposite prefabricated floors on the same prefabricated main beam or prefabricated secondary beam in an overlapping mode, upper longitudinal ribs 3 and lower longitudinal ribs 4 of the opposite prefabricated floors extend out and are correspondingly connected, and a hook is welded or directly bent; in order to ensure the strength of the cast-in-place strip, additional steel bars are further arranged in the cast-in-place strip, and the additional steel bars may include longitudinal additional steel bars 6 and transverse additional steel bars 5, as shown in the figure, the transverse additional steel bars 5 and the longitudinal additional steel bars 6 are directly arranged in the cast-in-place strip according to the designed density and can be bound with the original steel bars, and the like, so that the overall strength of the cast-in-place strip is ensured, and details are not repeated herein.
The utility model discloses a floor construction installation goes on according to following step: 1. hoisting the prefabricated floor slab 2 and placing the prefabricated floor slab on the main beam or the secondary beam; 2. binding the reinforcing steel bars and the additional reinforcing steel bars of the cast-in-place strip of the prefabricated floor slab; 3. and pouring and maintaining the cast-in-place belt concrete.
The utility model discloses a floor assembly methods, primary and secondary roof beam and floor are prefabricated component, and production and processing is convenient, and floor main scope one shot forming does not have the cast-in-place layer of large tracts of land, and the degree of assemblization is high, and floor construction stage bears the weight of the dynamic height, and it is few than traditional superimposed sheet to support temporarily, and the efficiency of construction is high, and thick receives cast-in-place layer to influence lessly, and the economic nature is better.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (9)
1. The utility model provides a composite construction of precast floor slab and roof beam which characterized in that: the prefabricated floor slab is lapped on the beam and integrated with the beam after being in place;
the end parts, used for lapping, of the prefabricated floor slab form stepped gaps, and the stepped gaps and the corresponding beams form a whole after the prefabricated floor slab is in place.
2. The precast floor slab and beam combination construction of claim 1, wherein: the method comprises the following steps of overlapping the end parts of the opposite prefabricated floor slabs on the same beam, reserving a set distance, carrying out rough treatment on the top surface of the beam, and embedding shear keys at the set distance.
3. A precast floor slab and beam combination construction according to claim 2, wherein: the step type gap is processed in a rough surface mode, and a cast-in-place belt is formed between the step type gaps of the opposite precast floor slabs on the same beam in an overlapping mode.
4. The precast floor slab and beam combination construction of claim 3, wherein: the upper portion of relative precast floor is indulged the muscle and is indulged the muscle with the lower part and all stretches out and the muscle is indulged on at least upper portion and is connected correspondingly.
5. The precast floor slab and beam combination construction of claim 4, wherein: and additional reinforcing steel bars for reinforcing the strength of the cast-in-situ strip are arranged in the cast-in-situ strip.
6. A composite precast floor slab and beam construction according to claim 5, wherein: the additional reinforcing steel bars comprise additional longitudinal bars perpendicular to the length direction of the beam and additional transverse bars parallel to the beam direction.
7. A precast floor slab and beam combination construction according to claim 2, wherein: the shear key is made of steel bars, studs or section steel.
8. The precast floor slab and beam combination construction of claim 7, wherein: at least upper longitudinal bars between the opposite precast floor slabs are correspondingly connected through a hook structure.
9. A precast floor slab and beam combination construction according to any one of claims 1 to 8, wherein: the beams include prefabricated primary beams and prefabricated secondary beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222602469.5U CN218667862U (en) | 2022-09-29 | 2022-09-29 | Combined structure of prefabricated floor slab and beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222602469.5U CN218667862U (en) | 2022-09-29 | 2022-09-29 | Combined structure of prefabricated floor slab and beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218667862U true CN218667862U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222602469.5U Active CN218667862U (en) | 2022-09-29 | 2022-09-29 | Combined structure of prefabricated floor slab and beam |
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|---|---|
| CN (1) | CN218667862U (en) |
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2022
- 2022-09-29 CN CN202222602469.5U patent/CN218667862U/en active Active
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