Anti-floating steel mesh core mold hollow floor system
By using a steel mesh core mold made of ribbed steel mesh with mesh size of 10mm×4.5mm~15mm×5mm in the hollow floor structure, the surface tension of concrete is used to achieve the anti-floating effect, and the problem of core material floating is solved. , simplifies the construction process and improves efficiency and quality.
Patent Information
- Application Number
- CN202421111874.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In the existing hollow floor structure, the core material is prone to float when pouring concrete, and complex anti-floating measures are required, resulting in delays in construction periods and increased construction costs.
A steel mesh core mold is made with a ribbed steel mesh with a mesh size of 10mm×4.5mm~15mm×5mm. The surface tension of concrete is used to achieve anti-floating effect, and no special anti-floating measures are required, which simplifies the construction process.
The good anti-floating effect of the steel mesh core mold is achieved, the construction process is simplified, the construction efficiency and quality effect are improved, and the construction cost is reduced.
Smart Images
Figure CN222456513U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, in particular to an anti-floating steel mesh core formwork hollow floor slab. Background Art
[0002] In recent years, with the increasing scale of housing construction and the complexity of structure, more and more hollow floor structures have appeared. Hollow floor is a new type of floor system. Its principle is to arrange a certain number of prefabricated permanent thin-walled boxes in a regular manner in the cast-in-place concrete floor to form a new type of floor system. It not only provides flexible application space, but also has the advantages of reducing the dead weight of the structure, increasing the rigidity of the floor, shortening the construction period, improving the sound insulation effect and reducing the structural cost. It can better meet the needs of the current multi-story and high-rise buildings with large column grids, large bays and large spaces. However, the core material in the prior art has a light dead weight and is prone to floating during concrete pouring. Anti-floating measures need to be adopted to overcome this problem. However, the existing anti-floating measures are relatively complicated and have an adverse effect on subsequent decoration and renovation, resulting in delays in the construction period and increased construction costs. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a floating steel mesh core mold hollow floor slab. The steel mesh core mold used has good anti-floating effect, does not need to adopt special anti-floating measures, simplifies the construction process, improves construction efficiency, and has good quality effect and economic benefits.
[0004] The technical solution adopted by the utility model is: an anti-floating steel mesh core mold hollow floor, comprising an upper flange plate, a lower flange plate, a rib beam and a steel mesh core mold;
[0005] The upper flange plate and the lower flange plate are arranged opposite to each other;
[0006] A plurality of the rib beams are arranged crosswise and vertically, and two ends of the rib beams are respectively connected to the upper flange plate and the lower flange plate to form a plurality of cavities;
[0007] The steel mesh core mold is arranged in the cavity;
[0008] The steel mesh core mold comprises a ribbed steel mesh body, and the mesh size of the ribbed steel mesh body is 10mm×4.5mm~15mm×5mm.
[0009] Furthermore, the ribbed steel mesh body includes a main mesh with four mesh surfaces; both ends of the mesh surfaces are bent toward the inner side of the opening of the main mesh, and the overlapping length of adjacent mesh surfaces is greater than 50 mm.
[0010] Furthermore, the ribbed steel mesh body also includes end meshes, and the end meshes are fixed to both ends of the main mesh through edge sealing plates to close the main mesh.
[0011] Furthermore, the steel mesh core mold also includes a support body, and the support body is arranged in the ribbed steel mesh body to support the ribbed steel mesh body.
[0012] Furthermore, the support body is constructed in a crisscross or trapezoidal or M-shape, and the width of the upper end of the support body is not less than the width of the lower end thereof.
[0013] Furthermore, longitudinal steel bars and transverse steel bars are arranged in the upper flange plate and the lower flange plate, the longitudinal steel bars pass through the rib beam, and the transverse steel bars are arranged on a side close to the steel mesh core mold.
[0014] Furthermore, rib beam main reinforcement and rib beam stirrups are arranged in the rib beam, and the rib beam main reinforcement, the rib beam stirrups and the longitudinal steel bars are tied and connected.
[0015] Furthermore, the steel mesh core mold is in contact with but not connected to the transverse reinforcement of the lower flange plate.
[0016] Furthermore, the rib beam is provided with pre-buried pipelines.
[0017] The advantages and positive effects of the utility model are:
[0018] (1) By using a ribbed steel mesh with a mesh size of 10 mm × 4.5 mm to 15 mm × 5 mm to make a steel mesh core mold, the steel mesh core mold can fully utilize the surface tension of concrete and has a good anti-floating effect. No special anti-floating measures are required, which simplifies the construction process;
[0019] (2) With the construction method of the present application, the concrete and the steel mesh core mold have good composite properties and can bear force together with the floor slab. The molding quality effect is good, the construction efficiency is improved, and good economic benefits are achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural cross-sectional view of a specific embodiment of the utility model;
[0021] Figure 2 It is a structural schematic diagram of a specific embodiment of the utility model;
[0022] Figure 3 This is a schematic diagram of the steel mesh core mold structure of a specific embodiment of the utility model;
[0023] Figure 4 It is a schematic diagram of the steel mesh core module composition of a specific embodiment of the utility model.
[0024] In the figure:
[0025] 10. Upper flange plate 11. Longitudinal reinforcement 12. Transverse reinforcement
[0026] 20, lower flange plate 30, rib beam 31, rib beam main reinforcement
[0027] 32. Rib beam stirrups 40. Steel mesh core mold 41. Ribbed steel mesh body
[0028] 411, main network 412, end network 42, support body DETAILED DESCRIPTION
[0029] The embodiments of the present utility model are described below in conjunction with the accompanying drawings.
[0030] like Figure 1-Figure 4 As shown, the utility model proposes an anti-floating steel mesh core mold 40 hollow floor, including an upper flange plate 10, a lower flange plate 20, a rib beam 30 and a steel mesh core mold 40; wherein the upper flange plate 10 and the lower flange plate 20 are arranged opposite to each other; a plurality of rib beams 30 are arranged crosswise in a vertical and horizontal direction, and the two ends of the rib beams 30 are respectively connected to the upper flange plate 10 and the lower flange plate 20 to form a plurality of cavities; the steel mesh core mold 40 is arranged in the cavity; the steel mesh core mold 40 includes a ribbed steel mesh body 41, and the mesh size of the ribbed steel mesh body 41 is 10mm×4.5mm~15mm×5mm.
[0031] In the prior art, the role of the steel mesh core mold 40 is to isolate the concrete so that the building can form a hollow structure. In order to prevent the steel mesh core mold 40 from floating up during the concrete pouring process, it is necessary to adopt anti-floating measures to connect it with the upper flange plate 10, the lower flange plate 20 or the rib beam 30; the utility model inventor of the present application has found that when the slump of concrete used for pouring the hollow floor is between 180mm-220mm, the steel mesh core mold 40 made of the ribbed steel mesh body 41 can make full use of the surface tension of the concrete, so that the concrete can be placed on the ribbed steel mesh body. The mesh surface of 41 forms a thin film effect, and the concrete poured on the outer edge of the steel mesh core mold 40 penetrates into the inner surface of the steel mesh core mold 40, forming convex cement mortar protrusions to wrap the steel mesh core mold 40, forming a common force, and achieving the effect of crack resistance and sound insulation. At this time, there is no need to take any anti-floating measures to achieve the fixation of the steel mesh core mold 40, reducing the construction steps, optimizing the construction process, and having good quality effects and economic benefits; on the other hand, cement mortar penetrates into the mesh holes, and a steel mesh composite protective layer is added to the concrete surface, so that the steel mesh core mold 40 and the floor slab are subjected to a common force, effectively suppressing the generation of cracks in the building.
[0032] Preferably, if Figure 3-4As shown, the ribbed steel mesh body 41 includes a main mesh 411 with four mesh surfaces, and the mesh surface has a plurality of V-shaped ribs, so that the mesh surface has good rigidity; the two ends of the mesh surface are bent toward the inner side of the main mesh 411, and the overlapping length of adjacent mesh surfaces is greater than 50 mm. Specifically, the main mesh 411 is made by stamping and tensioning with a special machine, including a top surface and a bottom surface in the height direction of the ribbed steel mesh body 41 and a left surface and a right surface in the width direction, forming a structure with two openings; the four mesh surfaces are bent toward the inner side of the opening and overlapped in pairs, and the overlapping length is greater than 50 mm to ensure the overall rigidity of the ribbed steel mesh body 41.
[0033] Furthermore, the ribbed steel mesh body 41 also includes an end mesh 412, which is fixed to the two ends of the main mesh 411 through an edge sealing plate to close the main mesh 411 to form a cavity, thereby realizing its function of isolating concrete; specifically, the edge sealing plate is V-shaped, wrapped around the two ends of the end mesh 412, and flattened by a punching machine, thereby forming good protection for the port of the end mesh 412 and making the end of the end mesh 412 close neatly, thereby ensuring the overall tightness of the ribbed steel mesh body 41, and having good anti-twisting effect.
[0034] In this embodiment, the end net 412 is welded to two ends of the main net 411 .
[0035] Furthermore, the steel mesh core mold 40 also includes a support body 42, which is arranged in the ribbed steel mesh body 41 and is used to support the ribbed steel mesh body 41 to improve the overall strength of the ribbed steel mesh body 41, avoid deformation of the ribbed steel mesh body 41 caused by people stepping on or pouring concrete during the construction project, and improve the quality of the floor slab.
[0036] Preferably, the support body 42 is constructed in a crisscross or trapezoidal or M-shape. It can be understood that the pressure received by the support body 42 is transmitted from top to bottom, so the width of the upper end of the support body 42 is not less than the width of the lower end, so that it has good anti-deformation ability.
[0037] In a preferred embodiment, the steel mesh core mold 40 includes a ribbed steel mesh body 41 and a support body 42, which are prefabricated in a factory and transported and installed as a whole.
[0038] Furthermore, longitudinal steel bars 11 and transverse steel bars 12 are provided in the upper flange plate 10 and the lower flange plate 20, and the longitudinal steel bars 11 pass through the rib beam 30, so that the rib beam 30 and the upper flange plate 10 and the lower flange plate 20 are effectively connected to form an integral structure; wherein the transverse steel bars 12 are arranged on the side close to the steel mesh core mold 40, that is, the steel mesh core mold 40 is arranged between the transverse steel bars 12 of the upper flange plate 10 and the transverse steel bars 12 of the lower flange plate 20, which also has the function of limiting the floating of the steel mesh core mold 40. In addition, each intersection of the longitudinal steel bars 11 and the transverse steel bars 12 is connected by binding, so that it has a better effect of resisting buoyancy, effectively ensuring that the upper flange plate 10 and the lower flange plate 20 have sufficient steel bar protective layer thickness, and compared with the prior art, the step of adding anti-cracking steel wire mesh is eliminated, thereby further improving construction efficiency and saving costs.
[0039] In this embodiment, the rib beam 30 is provided with main reinforcement of the rib beam 30 and stirrups of the rib beam 30, and the main reinforcement of the rib beam 30, the stirrups of the rib beam 30 and the longitudinal reinforcement 11 of the upper flange plate 10 and the longitudinal reinforcement 11 of the lower flange plate 20 are all tied and connected; so that a stable connection is formed between the rib beam 30 and the upper flange plate 10 and the lower flange plate 20, thereby improving the deformation resistance of the overall structure.
[0040] In a preferred embodiment, the steel mesh core mold 40 is in contact with but not connected to the transverse reinforcement 12 of the lower flange plate 20. Since the steel mesh core mold 40 itself has good anti-floating performance, the transverse reinforcement 12 of the lower flange plate 20 only needs to provide support for the steel mesh core mold 40, and there is no need to take anti-floating measures to connect the steel mesh core mold 40 with the transverse reinforcement 12 of the lower flange plate 20.
[0041] Furthermore, the rib beam 30 is provided with embedded pipelines, including arranging embedded electrical boxes and pipelines on the rib beam 30 according to the design drawings. The purpose of this design is to avoid cracking or falling off due to the bottom of the floor being too thin, which affects the quality of the floor.
[0042] The utility model also proposes a construction method of a hollow floor with an anti-floating steel mesh core mold 40, comprising the following steps:
[0043] S1, making a steel mesh core mold 40, and numbering it according to its installation position, specification, and model;
[0044] In this embodiment, the specifications and models of the steel mesh core mold 40 are determined according to the design drawings, and are prefabricated in the factory and then transported as a whole to the construction site; wherein the main mesh 411 of the ribbed steel mesh body 41 is made of a steel mesh with a mesh size of 10mm×4.5mm, and has four mesh surfaces, and the interface parts of the main mesh 411 are connected by welding, and the spacing between the welding points is not more than 150mm, and the mesh surface with welding points is the top surface of the steel mesh core mold 40; then the support body 42 is installed on the main mesh 411, such as Figure 4As shown, the support body 42 is formed by connecting a number of trapezoidal components, the narrower side of the trapezoidal component is connected to the top surface of the steel mesh core mold 40, and the wider side is connected to the bottom surface of the steel mesh core mold 40; finally, the end net 412 is welded to the two ends of the main net 411 to complete the production of the steel mesh core mold 40.
[0045] S2, setting up the template and measuring and laying out the lines, marking the positioning lines of the rib beam 30 and the steel mesh core mold 40 on the template;
[0046] S3, installing the main reinforcement of the rib beam 30 and the stirrups of the rib beam 30; installing the main reinforcement of the rib beam 30 and the stirrups of the rib beam 30 in the correct position according to the positioning line, and tying and connecting them;
[0047] S4, install the longitudinal steel bars 11 and the transverse steel bars 12 of the lower flange plate 20, each intersection of the longitudinal steel bars 11 and the transverse steel bars 12 is tied firmly with wire, and the longitudinal steel bars 11 of the lower flange plate 20 are tied and connected with the main bars of the rib beam 30;
[0048] S5. Install the pre-buried pipeline at the intended installation position of the rib beam 30; specifically, a temporary fixing measure may be used to fix the pre-buried pipeline at the designed position;
[0049] S6. Install the steel mesh core mold 40; during installation, ensure that the top surface of the steel mesh core mold 40 is placed upward above the transverse reinforcement 12 of the lower flange plate 20, and check whether its specification, model and installation direction are correct.
[0050] S7, install the longitudinal steel bars 11 and transverse steel bars 12 of the upper flange plate 10, each intersection of the longitudinal steel bars 11 and the transverse steel bars 12 is tied firmly with wire, check and adjust the steel mesh core mold 40 again, and then tie the longitudinal steel bars 11 of the upper flange plate 10 and the main bars of the rib beam 30;
[0051] S8, pouring concrete. Before pouring, confirm again whether the transverse reinforcement 12 and the longitudinal reinforcement 11 of the upper flange plate 10 and the lower flange plate 20 are firmly tied together, and whether the longitudinal reinforcement 11 of the upper flange plate 10 and the lower flange plate 20 are firmly tied to the main reinforcement plate of the rib beam 30.
[0052] The advantages and positive effects of the utility model are:
[0053] (1) By using a ribbed steel mesh with a mesh size of 10 mm × 4.5 mm to 15 mm × 5 mm to make a steel mesh core mold, the steel mesh core mold can fully utilize the surface tension of concrete and has a good anti-floating effect. No special anti-floating measures are required, which simplifies the construction process;
[0054] (2) With the construction method of the present application, the concrete and the steel mesh core mold have good composite properties and can bear force together with the floor slab. The molding quality effect is good, the construction efficiency is improved, and good economic benefits are achieved.
[0055] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.
Claims
1. An anti-floating steel mesh core mold hollow floor, characterized by: It includes an upper flange plate, a lower flange plate, a rib beam and a steel mesh core mold; The upper flange plate and the lower flange plate are arranged opposite to each other; A plurality of the rib beams are arranged crosswise and vertically, and two ends of the rib beams are respectively connected to the upper flange plate and the lower flange plate to form a plurality of cavities; The steel mesh core mold is arranged in the cavity; The steel mesh core mold comprises a ribbed steel mesh body, and the mesh size of the ribbed steel mesh body is 10mm×4.5mm~15mm×5mm.
2. The anti-floating steel mesh core mold hollow floor according to claim 1 is characterized by: The ribbed steel mesh body comprises a main mesh with four mesh surfaces; both ends of the mesh surfaces are bent toward the inner side of the opening of the main mesh, and the overlapping length of adjacent mesh surfaces is greater than 50 mm.
3. The anti-floating steel mesh core mold hollow floor according to claim 2 is characterized by: The ribbed steel mesh body also includes end meshes, which are fixed to both ends of the main mesh through edge sealing plates to close the main mesh.
4. The anti-floating steel mesh core mold hollow floor according to claim 3 is characterized by: The steel mesh core mold also includes a support body, which is arranged in the ribbed steel mesh body and is used to support the ribbed steel mesh body.
5. The anti-floating steel mesh core mold hollow floor according to claim 4 is characterized in that: The support body is constructed in a crisscross or trapezoidal or M-shape, and the width of the upper end of the support body is not less than the width of the lower end thereof.
6. The anti-floating steel mesh core mold hollow floor according to claim 1 or 5, characterized in that: The upper flange plate and the lower flange plate are both provided with longitudinal steel bars and transverse steel bars. The longitudinal steel bars pass through the rib beams, and the transverse steel bars are provided on a side close to the steel mesh core mold.
7. The anti-floating steel mesh core mold hollow floor according to claim 6 is characterized by: The rib beam is provided with rib beam main reinforcement and rib beam stirrups, and the rib beam main reinforcement, the rib beam stirrups and the longitudinal steel bars are tied and connected.
8. The anti-floating steel mesh core mold hollow floor according to claim 6, characterized in that: The steel mesh core mold is in contact with the transverse reinforcement of the lower flange plate but is not connected thereto.
9. The anti-floating steel mesh core mold hollow floor according to claim 1, characterized in that: The rib beam is provided with pre-buried pipelines.