Light steel-wood-concrete composite floor
By adopting a light steel-wood-concrete combined floor slab structure, using the combination of OSB plates, C-shaped steel and thermal insulation panels, combined with the pouring of steel mesh and cement concrete, the existing floor slabs have solved the problems of large self-weight, low strength and connection slippage, and achieved higher stiffness, stability and seismic resistance.
Patent Information
- Application Number
- CN202421514787.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing building floor slabs are heavy and have low strength, and the connection between the wooden structure and concrete is prone to large slippage, which poses a threat to the safety of life and property in high-intensity earthquakes.
The light steel-wood-concrete combined floor slab structure is adopted, through the combination of OSB plate, C-shaped steel and thermal insulation panel, the self-tapping screws of the OSB plate are connected with the OSB plate, combined with the steel mesh formed by the distribution of steel bars and stressed steel bars, and finally cement concrete is poured on the steel bar mesh to form an integral structure.
It improves the stiffness and stability of the floor slab, enhances the load-bearing capacity, reduces its self-weight, avoids the bonding and slip problems caused by the direct connection between the wooden structure and concrete, and improves the seismic performance of the structure.
Smart Images
Figure CN222730888U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a composite floor slab, in particular to a light steel-wood-concrete composite floor slab. Background Art
[0002] At present, in the field of building structures, traditional building floors generally adopt reinforced concrete structures or steel-concrete composite structures, which have disadvantages such as long construction period, heavy weight, high maintenance cost, and difficult transportation. In high-intensity areas, due to their heavy weight, they are easy to cause serious damage to life and property safety when an earthquake occurs.
[0003] Wood structures have the characteristics of light weight, high tensile strength, and good thermal and sound insulation; concrete structures have greater rigidity and high stability; and steel is characterized by high strength, easy installation, and strong plasticity. When connecting wood structures and concrete structures, large slippage is likely to occur. Introducing cold-bent thin-walled steel structures as connectors can enhance the stress-bearing performance of the floor slab while connecting the wood structure and the concrete structure into a whole, so that the three can give full play to the performance of the materials. Summary of the invention
[0004] The utility model aims to solve the problems of existing common floor slabs, such as heavy weight, low strength and easy large slippage in the connection between the wood structure and concrete, and to provide a light steel-wood-concrete composite floor slab.
[0005] The utility model provides a light steel-wood-concrete composite floor slab comprising an OSB board, a C-shaped steel and a heat-insulating sound-proof board, wherein the OSB board is arranged at the bottom, two or more C-shaped steels are fixedly connected to the OSB board at a set interval, a heat-insulating sound-proof board is attached to a portion of the OSB board where no C-shaped steel is arranged, a through hole is opened on the web of the C-shaped steel, a distribution steel bar is passed through the through hole, a stress-bearing steel bar is connected to the distribution steel bar, cement concrete is poured on a steel bar mesh composed of the heat-insulating sound-proof board, the distribution steel bar and the stress-bearing steel bar, and the top surface height of the cement concrete is consistent with the top surface height of the C-shaped steel.
[0006] The C-shaped steel and OSB board are connected by self-tapping screws, and the spacing between the self-tapping screws is not greater than 400mm.
[0007] The height of the C-steel web is determined according to the thickness of the floor slab. The curling length of the C-steel is not less than 10mm. Two or more C-steels are symmetrically distributed on the OSB board. The grade of the C-steel is not lower than Q235.
[0008] The thermal insulation and sound insulation board is an extruded board, EPS polystyrene foam board or rock wool board.
[0009] The cast-in-place cement concrete on the thermal insulation board, distribution steel bars and stress-bearing steel bars is flush with the upper flange of the C-shaped steel, and the strength grade of the cement concrete is not less than C30.
[0010] The production principle of this utility model:
[0011] The light steel-wood-concrete composite floor provided by the utility model is manufactured by arranging two or more C-shaped steels at a set interval along the width direction of the OSB board, and the C-shaped steels are symmetrically distributed on the OSB board. The bottom flange of the C-shaped steel is fitted with the OSB board, and the two are connected into a whole along the length direction of the C-shaped steel using a single row of self-tapping screws. Then, through holes are opened on the web of the C-shaped steel, and the through holes are evenly distributed on the web, and the distribution steel bars are passed through the through holes. The force-bearing steel bars and the distribution steel bars are tied to form a steel grid. The thermal insulation and sound insulation board is tightly fitted with the OSB board and arranged along the direction of the distribution steel bars, and the thermal insulation and sound insulation board is disconnected at the cross-section of the C-shaped steel. Formwork is supported on the left and right sides of the OSB board, and finally cement concrete is poured in the template grooves on the left and right sides of the OSB board until the surface of the cement concrete is flush with the upper flange of the C-shaped steel. After curing, a light steel-wood concrete composite floor is formed.
[0012] Beneficial effects of the utility model:
[0013] The light steel-wood-concrete composite floor provided by the utility model has a simple structure, a stable connection and is easy to operate. The filled thermal insulation and sound insulation board provides waterproofing, sound insulation and heat insulation for the floor, saves the amount of concrete, and reduces the deadweight of the floor. The C-shaped steel and the OSB board are connected by self-tapping screws, and then the concrete is poured to avoid the direct connection between the OSB board and the concrete to cause bonding and slippage. The three work together to enhance the rigidity and stability of the floor and improve the bearing capacity of the floor. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the combined floor described in the utility model.
[0015] Figure 2 This is a schematic diagram of the decomposed structure of the composite floor described in the utility model.
[0016] Figure 3 This is a top view of the combined floor described in the utility model.
[0017] The markings in the above drawings are as follows:
[0018] 1. OSB board 2. C-shaped steel 3. Thermal insulation board 4. Distribution steel bar 5. Strength steel bar
[0019] 6. Cement concrete 7. Self-tapping screws. DETAILED DESCRIPTION
[0020] See also Figures 1 to 3 As shown:
[0021] The light steel-wood-concrete composite floor provided by the utility model includes an OSB board 1, a C-shaped steel 2 and a thermal insulation and sound insulation board 3, wherein the OSB board 1 is arranged at the bottom, two or more C-shaped steels 2 are fixedly connected to the OSB board 1 according to a set interval, and the thermal insulation and sound insulation board 3 is attached to the part of the OSB board 1 where the C-shaped steel 2 is not arranged, and a through hole is opened on the web of the C-shaped steel 2, and a distribution steel bar 4 is penetrated in the through hole, and a stress-bearing steel bar 5 is connected to the distribution steel bar 4, and cement concrete 6 is poured on the steel bar mesh composed of the thermal insulation and sound insulation board 3, the distribution steel bar 4 and the stress-bearing steel bar 5, and the top surface height of the cement concrete 6 is consistent with the top surface height of the C-shaped steel 2.
[0022] The C-shaped steel 2 and the OSB board 1 are connected by self-tapping screws 7, and the arrangement spacing of the self-tapping screws 7 is not greater than 400 mm.
[0023] The web height of C-shaped steel 2 is determined according to the floor thickness, the curling length of C-shaped steel 2 is not less than 10mm, two or more C-shaped steels 2 are symmetrically distributed on the OSB board 1, and the grade of C-shaped steel 2 is not lower than Q235.
[0024] The heat-insulating and sound-insulating board 3 is an extruded board or an EPS polystyrene foam board or a rock wool board.
[0025] The cast-in-place cement concrete 6 on the thermal insulation board 3, the distribution steel bars 4 and the stress-bearing steel bars 5 is flush with the upper flange of the C-shaped steel 2, and the strength grade of the cement concrete 6 is not less than C30.
[0026] The production principle of this utility model:
[0027] The light steel-wood-concrete composite floor provided by the utility model is manufactured by arranging two or more C-shaped steels 2 at a set interval along the width direction of the OSB board 1, and the C-shaped steels 2 are symmetrically distributed on the OSB board 1. The bottom flange of the C-shaped steel 2 is fitted with the OSB board 1, and the two are connected into a whole along the length direction of the C-shaped steel 2 by using a single row of self-tapping screws 7. Then, through holes are opened on the web of the C-shaped steel 2, and the through holes are evenly distributed on the web, and the distribution steel bars 4 are passed through the through holes. The force-bearing steel bars 5 are tied with the distribution steel bars 4 to form a steel grid. The thermal insulation and sound insulation board 3 is tightly fitted with the OSB board 1 and arranged along the direction of the distribution steel bars 4, and the thermal insulation and sound insulation board 3 is disconnected at the cross-sectional position of the C-shaped steel 2. Formwork is supported on the left and right sides of the OSB board 1, and finally cement concrete 6 is poured in the template grooves on the left and right sides of the OSB board 1 until the surface of the cement concrete 6 is flush with the upper flange of the C-shaped steel 2, and a light steel-wood concrete composite floor is formed after curing.
Claims
1. A light steel-wood-concrete composite floor, characterized by: It includes OSB board, C-shaped steel and thermal insulation and sound insulation board, wherein the OSB board is arranged at the bottom, two or more C-shaped steels are fixedly connected to the OSB board at a set interval, the thermal insulation and sound insulation board is affixed to the position of the OSB board where no C-shaped steel is arranged, through holes are opened on the web of the C-shaped steel, distribution steel bars are passed through the through holes, and stress-bearing steel bars are connected to the distribution steel bars, and cement concrete is poured on the steel mesh composed of the thermal insulation and sound insulation board, the distribution steel bars and the stress-bearing steel bars, and the top surface height of the cement concrete is consistent with the top surface height of the C-shaped steel.
2. The light steel-wood-concrete composite floor according to claim 1, characterized in that: The C-shaped steel and the OSB board are connected by self-tapping screws, and the arrangement spacing of the self-tapping screws is not greater than 400mm.
3. A light steel-wood-concrete composite floor according to claim 1 or 2, characterized in that: The height of the web of the C-shaped steel is determined according to the thickness of the floor slab, the curling length of the C-shaped steel is not less than 10 mm, two or more C-shaped steels are symmetrically distributed on the OSB board, and the grade of the C-shaped steel is not lower than Q235.
4. The light steel-wood-concrete composite floor according to claim 1, characterized in that: The heat-insulating and sound-insulating board is an extruded board or an EPS polystyrene foam board or a rock wool board.
5. The light steel-wood-concrete composite floor according to claim 1 is characterized in that: The cast-in-place cement concrete on the thermal insulation and sound insulation board, the distribution steel bars and the stress-bearing steel bars is flush with the upper flange of the C-shaped steel, and the strength grade of the cement concrete is not less than C30.