Anti-cracking structure of large-span floor slab
By designing a crack-proof structure for large-span floor slabs during construction, and using the combined reinforcement technology of embedded cylinders, inlet rods and steel mesh frames, the problem of cracking at the floor slab splicing is solved, achieving more stable connections and higher house quality.
Patent Information
- Application Number
- CN202421373880.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-06-17
AI Technical Summary
During construction, cracks are prone to splicing of prefabricated floor slabs, affecting the overall house quality.
A crack-proof structure of a large-span floor slab is designed. By setting the first floor slab and the second floor slab on the top of the steel beam, and setting the embedding cylinder and the inlet rod on its side walls, a reinforced connection is formed. At the same time, a column frame is set on the beam joint plate, and anti-cracking concrete is poured at the splicing to form a fill layer and a leveling layer.
It effectively prevents cracking at the connection between the floor slabs, enhances overall stability, and ensures improvement of house quality.
Smart Images
Figure CN222936252U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, and particularly relates to an anti-cracking structure for a large-span floor slab. Background Art
[0002] An assembled building refers to a building assembled on-site with prefabricated components. The characteristics of the assembled building process are that a large number of building components are produced and processed in a workshop. The main types of components include: the main body of the floor slab, exterior wall panels, interior wall panels, composite slabs, balconies, air-conditioning panels, stairs, prefabricated floor slab bodies, prefabricated beams, and prefabricated columns, etc. During the production and installation of an assembled building, a prefabricated floor slab body prefabricated in a factory is hoisted onto the building manually or mechanically. Since steel bars extend out from both ends of the prefabricated floor slab body, the steel bars are welded to the structural beam on-site, and then the connection part is cast in place.
[0003] In the prior art of building floor slab construction, the use of prefabricated floor slabs is very extensive. The use of prefabricated floor slab assembly construction can improve efficiency, shorten the cycle, etc. However, at the same time, the splicing part is often closed by pouring concrete. In actual use, cracking at the splicing part is likely to occur. Therefore, it is necessary to design a structure to prevent cracking. Summary of the Utility Model
[0004] The purpose of the utility model is to provide an anti-cracking structure for a large-span floor slab, so as to prevent cracking at the connection between floor slabs and achieve the technical effect of further strengthening the overall stability.
[0005] The utility model is realized through the following technical solutions: it includes a steel beam. A first floor slab and a second floor slab are arranged on the top of the steel beam. The first floor slab is spliced with the second floor slab. Embedding cylinders and extending rods are arranged on the side walls of the first floor slab and the second floor slab. The extending rod of the first floor slab can be embedded into the embedding cylinder of the second floor slab, and the extending rod of the second floor slab can be embedded into the embedding cylinder of the first floor slab;
[0006] The embedding cylinders and the extending rods are arranged vertically and alternately. A steel bar mesh frame is further arranged between the embedding cylinders and the extending rods. The top of the steel bar mesh frame is bundled and connected with the embedding cylinder or the extending rod, and the bottom of the steel bar mesh frame is bundled and connected with the embedding cylinder or the extending rod.
[0007] In order to better realize the utility model, further, grooves are arranged on the side walls of the first floor slab and the second floor slab, and the side parts of the steel bar mesh frame are respectively placed in the grooves.
[0008] In order to better realize the utility model, further, a beam connection plate is further arranged on the top of the steel beam, and the first floor slab and the second floor slab are arranged on the beam connection plate.
[0009] To better implement the present utility model, further, a column frame is provided on the beam connection plate. The column frame is disposed between the first floor slab and the second floor slab, extends towards the steel bar mesh frame, and is located within the steel bar mesh frame.
[0010] To better implement the present utility model, further, concrete is poured between the first floor slab and the second floor slab to form a filling layer. The extending rod or the embedding cylinder is placed within the filling layer, and a sunken groove is formed between the filling layer and the top of the first floor slab or the second floor slab.
[0011] To better implement the present utility model, further, anti-cracking concrete is filled in the sunken groove to form a leveling layer, which is flush with the top of the first floor slab or the second floor slab.
[0012] The beneficial effects of the present utility model are as follows:
[0013] In the present utility model, an embedding cylinder and an extending rod are provided between the first floor slab and the second floor slab, and the first floor slab and the second floor slab are inserted into each other. In addition, a steel bar mesh frame is provided between the embedding cylinder and the extending rod to reinforce the connection between the first floor slab and the second floor slab, so as to avoid deviation and interference of concrete flow during concrete pouring. In addition, a beam connection plate is provided on the steel beam to facilitate the installation of the first floor slab and the second floor slab. In addition, an upward column frame is provided on the beam connection plate and is disposed between the first floor slab and the second floor slab. After the column frame is installed, concrete is poured. After pouring, a filling layer is formed. A sunken groove is formed between the filling layer and the first floor slab or the second floor slab, and leveling material is filled on the surfaces of the first floor slab, the second floor slab, and the sunken groove to form a leveling layer. The leveling layer is laid on the surfaces of the first floor slab and the second floor slab, which has the functions of waterproofing and anti-seepage, and further protection. Under the combined action of the leveling layer, the filling layer, the embedding cylinder, the extending rod, the steel bar mesh frame, and the column frame, the effects of stable installation and anti-cracking are achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the present utility model will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.
[0015] Figure 1 STRUCTURAL SCHEMATIC DIAGRAM OF THE ANTI-CRACKING STRUCTURE OF THE LARGE-SPAN FLOOR SLAB PROVIDED BY THE PRESENT UTILITY MODEL Figure 1 ;
[0016] Figure 2Structural schematic of the anti-cracking structure for large-span floor slabs provided by the present utility model Figure 2 ;
[0017] Figure 3 Front view of the anti-cracking structure for large-span floor slabs provided by the present utility model;
[0018] Figure 4 Schematic diagram of the steel bar mesh frame structure provided by the present utility model.
[0019] Icon:
[0020] 100 - Steel beam, 101 - Beam connecting plate, 102 - Column frame, 110 - Steel bar mesh frame, 200 - First floor slab, 210 - Embedded cylinder, 220 - Insertion rod, 230 - Groove, 300 - Second floor slab. Detailed implementation manners
[0021] Next, the technical solutions in the present utility model will be described in conjunction with the accompanying drawings in the present utility model.
[0022] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0023] Please refer to Figures 1 to 4 ,
[0024] The present utility model provides an anti-cracking structure for large-span floor slabs. In the prior art, cracks are likely to occur at the joints between floor slabs, which will seriously affect the overall quality of the house. To solve the above technical problems, the present utility model optimizes the structure to prevent cracks at the joints and strengthen the connection between floor slabs, thereby further improving the overall stability.
[0025] The structure of the present utility model is as follows: It includes a steel beam 100. A first floor slab 200 and a second floor slab 300 are installed on the top of the steel beam 100. There is a splicing gap between the first floor slab 200 and the second floor slab 300. In addition, an embedding cylinder 210 and an extending rod 220 are provided on the side of the first floor slab 200 close to the second floor slab 300, and the second floor slab 300 is also provided with an embedding cylinder 210 and an extending rod 220 on the side close to the first floor slab 200. During the installation process, the extending rod 220 of the first floor slab 200 can be inserted into the embedding cylinder 210 of the second floor slab 300, and the extending rod 220 of the second floor slab 300 can be inserted into the embedding cylinder 210 of the first floor slab 200. The embedding cylinders 210 and the extending rods 220 of the first floor slab 200 are arranged vertically and staggeredly, and the embedding cylinders 210 of the first floor slab 200 are arranged above the extending rods 220 of the first floor slab 200. In addition, the embedding cylinders 210 and the extending rods 220 of the second floor slab 300 are also arranged vertically and staggeredly, and the extending rods 220 of the second floor slab 300 are arranged above the embedding cylinders 210 of the first floor slab 200. As shown in the figure, the first floor slab 200 and the second floor slab 300 can be inserted into each other. After the insertion, there is still a gap between the first floor slab 200 and the second floor slab 300. In order to strengthen the connection between the first floor slab 200 and the second floor slab 300 and achieve a further anti-cracking effect, a steel mesh frame 110 is also provided between the embedding cylinder 210 and the extending rod 220, and by bundling, the bottom of the steel mesh frame 110 is bundled with the lower embedding cylinder 210 or extending rod 220, and the top of the steel mesh frame 110 is bundled with the upper embedding cylinder 210 or extending rod 220. Under the action of the steel mesh frame 110, the connection between it and the first floor slab 200 and the second floor slab 300 can be stronger, and at the same time, it can also prevent the first floor slab 200 and the second floor slab 300 from deviating during the gap pouring, playing a certain strengthening effect.
[0026] Similarly, in order to reinforce the installation structure of the steel mesh frame 110, grooves 230 are also provided on the side walls of the first floor slab 200 and the second floor slab 300, so that the side walls of the steel mesh frame 110 can be placed in the grooves 230. In order to further prevent cracking, a fiber hanging mesh is also provided on the top of the steel mesh frame 110 to further achieve a better anti-cracking effect.
[0027] In order to facilitate the better lapping of the first floor slab 200 and the second floor slab 300, a beam connection plate 101 is also provided on the top of the steel beam 100. The beam connection plate 101 also belongs to a part of the steel beam 100, that is, a support plate extending a certain length outward from its top, which can increase the contact area with the first floor slab 200 and the second floor slab 300, and improve the convenience and safety of installing the first floor slab 200 and the second floor slab 300.
[0028] In order to achieve a better installation effect and better firmness, a column frame 102 is further provided on the beam connection plate 101. The column frame 102 is arranged at the gap between the first floor slab 200 and the second floor slab 300, extends towards the steel bar mesh frame 110 and is located within the steel bar mesh frame 110, so as to achieve multi-directional (horizontal and vertical) reinforcement.
[0029] After the column frame 102, the steel bar mesh frame 110, the first floor slab 200 and the second floor slab 300 are all installed, anti-cracking concrete is poured at the gap between the first floor slab 200 and the second floor slab 300. The anti-cracking concrete can be a product directly purchased on the existing market and can be used normally. After pouring, the anti-cracking concrete is fully and evenly distributed among the steel bar mesh frame 110, the column frame 102, the embedded cylinder 210, the extending rod 220, etc., so as to form a filling layer. There is a certain distance between the top of the filling layer and the tops of the first floor slab 200 and the second floor slab 300, thus forming a sunken groove.
[0030] And leveling material is filled on the tops of the first floor slab 200 and the second floor slab 300 and in the sunken groove, and after solidification, a leveling layer is formed. After leveling, the structures between the first floor slab 200 and the second floor slab 300 are all flush, and the leveling layer further plays a role in preventing cracking.
[0031] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims
1. A crack prevention structure for a large-span floor, characterized in that: The invention comprises a steel beam (100), a first floor plate (200) and a second floor plate (300) are arranged on the top of the steel beam (100), the first floor plate (200) and the second floor plate (300) are spliced, and the side walls of the first floor plate (200) and the second floor plate (300) are both provided with an embedding tube (210) and an insertion rod (220), the insertion rod (220) of the first floor plate (200) can be embedded in the embedding tube (210) of the second floor plate (300), and the insertion rod (220) of the second floor plate (300) can be embedded in the embedding tube (210) of the first floor plate (200); The embedded cylinder (210) and the inserted rod (220) are arranged in a vertically staggered manner, and a steel mesh frame (110) is also arranged between the embedded cylinder (210) and the inserted rod (220). The top of the steel mesh frame (110) is tied and connected to the embedded cylinder (210) or the inserted rod (220), and the bottom of the steel mesh frame (110) is tied and connected to the embedded cylinder (210) or the inserted rod (220).
2. The anti-cracking structure of the large-span floor according to claim 1 is characterized in that: The side walls of the first floor slab (200) and the second floor slab (300) are both provided with grooves (230), and the side portions of the steel mesh frame (110) are respectively placed in the grooves (230).
3. The anti-cracking structure of the large-span floor according to claim 2 is characterized in that: A beam connecting plate (101) is also provided on the top of the steel beam (100), and the first floor slab (200) and the second floor slab (300) are arranged on the beam connecting plate (101).
4. The anti-cracking structure of the large-span floor according to claim 3 is characterized in that: A column frame (102) is provided on the beam connecting plate (101), and the column frame (102) is provided between the first floor slab (200) and the second floor slab (300), and extends toward the steel mesh frame (110) and is located inside the steel mesh frame (110).
5. The anti-cracking structure of the large-span floor according to claim 4 is characterized in that: Concrete is poured between the first floor slab (200) and the second floor slab (300) to form a filling layer, the insertion rod (220) or the embedded cylinder (210) is placed in the filling layer, and a sunken groove is formed between the filling layer and the top of the first floor slab (200) or the second floor slab (300).
6. The anti-cracking structure of the large-span floor according to claim 5, characterized in that: The anti-cracking concrete is filled in the sunken groove to form a leveling layer, which is flush with the top of the first floor slab (200) or the second floor slab (300).