A concrete steel bar truss floor slab and construction method thereof

Abstract

The present invention relates to the field of building technology, and more specifically to a concrete steel bar truss floor slab and a construction method thereof, comprising a base plate, wherein the base plate is cast by concrete and a fiber mesh, and a plurality of steel bar trusses are arranged on the upper surface of the base plate; after the plurality of cast base plates are spliced ​​together, concrete is poured on the top of the base plate, and when the concrete on the top of the base plate reaches a certain amount, the water contained in the concrete enters the installation pipe through the opening, and the flexible plate is driven to move outward by the expansion structure absorbing water and expanding, and when two adjacent groups of flexible plates move outward to a certain position, the two adjacent groups of flexible plates are in contact, thereby ensuring the sealing between the two groups of base plates, thereby further ensuring that the concrete is prevented from overflowing from the joint of the two groups of base plates when pouring concrete, and at the same time, there is no need to manually set a water stop at the joint, thereby improving the construction efficiency and facilitating the splicing of the concrete steel bar truss floor slab.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a concrete steel bar truss floor slab and a construction method thereof. Background Art

[0002] Steel truss floor slab is a composite structure composed of steel bars and concrete, which is widely used in building construction. It has the advantages of light weight, high strength, good seismic performance and convenient construction. It is widely used in industrial and civil buildings, bridges, tunnels and other engineering fields;

[0003] At present, when constructing a steel truss floor slab, it is necessary to splice several groups of steel truss floor slabs together, then pour concrete, and wait for the concrete to solidify before completing the construction of the steel truss floor slab. However, after the existing steel truss floor slabs are spliced, concrete may drip at the splicing of the concrete steel truss floor slabs. This is because when pouring concrete, the concrete will overflow from the splicing, resulting in dripping. Most of the existing ones need to set water stop strips at the splicing or take other measures to prevent concrete from overflowing. This method is more labor-intensive and inefficient. Therefore, a concrete steel truss floor slab and a construction method thereof are proposed to facilitate the splicing of the concrete steel truss floor slabs and prevent the concrete from overflowing from the splicing when pouring concrete. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a concrete steel bar truss floor slab and a construction method thereof, which facilitates the splicing of the concrete steel bar truss floor slab and prevents concrete from overflowing from the splicing when pouring concrete.

[0005] The technical solution adopted by the present invention to solve its technical problem is a concrete steel truss floor slab, including a base plate, which is cast by concrete and fiber mesh, and a plurality of groups of steel trusses are arranged on the upper surface of the base plate, and the base plate and the plurality of groups of steel trusses are cast by concrete at one time, and adjustable movable structures for reducing the size of the gap between two adjacent groups of base plates are installed on both sides of the base plate.

[0006] Specifically, the adjustable movable structure includes flexible plates arranged on both sides of the base plate, the flexible plates are vertically arranged, the lower edge of the flexible plate is on the same horizontal plane as the lower surface of the base plate, the upper edge of the flexible plate is higher than the upper edge of the steel truss, and a folded fiber mesh layer is connected between the base plate and the flexible plate.

[0007] Specifically, the bottom plate is provided with an expansion structure for driving the adjustable movable structure to move toward a side away from the bottom plate.

[0008] Specifically, a plurality of groups of horizontally arranged support structures are provided above the base plate, the support structures are used to improve the strength of the base plate, and the expansion structures are installed on both sides of the support structures; the support structures include horizontally arranged support tubes, the outer sides of the support tubes are fixedly connected to one side of the steel truss, both ends of the support tubes are fixedly connected with connecting tubes inclined downward, the upper ends of the connecting tubes are connected with one end of the support tubes, and the end of the connecting tubes away from the support tubes is connected with a horizontally arranged installation tube, the support tubes, the connecting tubes and the installation tubes are an integrated structure, and the installation tubes are provided with expansion structures.

[0009] Specifically, a plurality of groups of openings are provided on the outer side of the support tube, and the openings are communicated with the inside of the support tube. The expansion structure drives the adjustable movable structure to work by swelling by absorbing water.

[0010] Specifically, the expansion structure includes a movable plate slidably connected to the inner wall of the mounting tube, a side of the movable plate away from the supporting tube is fixedly connected to a horizontally arranged movable rod, an end of the mounting tube away from the supporting tube is installed with a sealing plate, the movable rod passes through the sealing plate and is slidably connected to the sealing plate, an end of the movable rod away from the movable plate is fixedly connected to one side of the flexible plate, an inner wall of one end of the connecting tube close to the mounting tube is fixedly connected to a filter plate, a plurality of groups of filter holes are arranged on the filter plate, a water-absorbing and expanding material is arranged inside the mounting tube, and the water-absorbing and expanding material is located between the movable plate and the filter plate.

[0011] Specifically, magnets are embedded and installed on the flexible board, and the flexible boards on two adjacent groups of bottom boards are adsorbed to each other through the magnets.

[0012] Specifically, the top of the bottom plate is detachably connected with symmetrically arranged lifting buckles.

[0013] Specifically, the steel truss uses steel bars as the upper chord, the lower chord and the web, and is connected by resistance spot welding.

[0014] A construction method of a concrete steel bar truss floor slab adopts the above-mentioned concrete steel bar truss floor slab, specifically comprising the following steps:

[0015] S1. Hoist several groups of concrete steel truss floor slabs to designated locations on the floor;

[0016] S2. Pour concrete on the concrete steel truss floor slabs one by one, and ensure that the height of the concrete does not exceed the height of the adjustable movable structure;

[0017] S3. During the concrete pouring process, the gaps between adjacent concrete steel truss floor slabs are closed by means of an adjustable movable structure;

[0018] S4. After the adjustable movable structure closes the gap between the adjacent concrete steel truss floor slabs, continue pouring concrete to the specified thickness to complete the pouring work.

[0019] Beneficial effects of the present invention:

[0020] The present invention discloses a concrete steel bar truss floor slab and a construction method thereof. After several groups of cast bottom slabs are spliced ​​together, concrete is poured on top of the bottom slabs. When the concrete on top of the bottom slabs reaches a certain amount, the water contained in the concrete enters the installation pipe through the openings, and the flexible plate is driven to move outward by the expansion structure absorbing water and expanding. When two adjacent groups of flexible plates move outward to a certain position, the two adjacent groups of flexible plates contact, thereby ensuring the sealing between the two groups of bottom slabs, thereby further ensuring that the concrete is prevented from overflowing from the joint of the two groups of bottom slabs when pouring concrete. At the same time, there is no need to manually set a water stop at the joint, thereby improving construction efficiency and facilitating the splicing of the concrete steel bar truss floor slabs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 is an axonometric view of the present invention;

[0023] Figure 2 This is a schematic diagram of two sets of base plates after being spliced ​​together according to the present invention;

[0024] Figure 3 for Figure 1 A magnified image of area A;

[0025] Figure 4 for Figure 2 A magnified view of area B;

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the support tube of the present invention;

[0027] Figure 6 This is a schematic diagram of two adjacent groups of flexible boards after contacting each other according to the present invention;

[0028] Figure 7 for Figure 5 A magnified view of region C;

[0029] Figure 8 for Figure 6 A magnified view of region D;

[0030] In the figure: 1. bottom plate; 2. steel truss; 3. flexible plate; 4. fiber mesh layer; 5. support pipe; 6. connecting pipe; 7. installation pipe; 8. opening; 9. movable plate; 10. movable rod; 11. sealing plate; 12. filter plate; 13. filter hole; 14. water-absorbing and expanding material; 15. lifting buckle. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] In order to facilitate the splicing of concrete steel bar truss floor slabs and prevent the concrete from overflowing from the splicing when pouring concrete, as an embodiment of the present invention, Figure 1 , Figure 2 As shown, a concrete steel truss floor slab described in the present invention includes a base plate 1, which is cast by concrete and fiber mesh, and a plurality of groups of steel trusses 2 are provided on the upper surface of the base plate 1, and the base plate 1 and the plurality of groups of steel trusses 2 are cast by concrete at one time, and adjustable movable structures for reducing the size of the gap between two adjacent groups of base plates 1 are installed on both sides of the base plate 1.

[0033] When in use, after several groups of cast base plates 1 are spliced ​​together, concrete can be poured on top of the base plates 1. During the concrete pouring process, the adjustable movable structures of adjacent base plates 1 can be brought close to each other. When two adjacent groups of adjustable movable structures are squeezed and contacted, the joints of the adjacent base plates 1 can be sealed to prevent concrete from overflowing from the joints of the two groups of base plates 1. At the same time, there is no need to manually set water stop strips at the joints, which improves construction efficiency and facilitates the splicing of concrete steel truss floor plates.

[0034] In order to ensure the sealing between the two sets of bottom plates 1 when pouring concrete, for example, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the present invention also includes that the adjustable movable structure includes flexible plates 3 arranged on both sides of the base plate 1, the flexible plates 3 are vertically arranged, the lower edge of the flexible plate 3 is on the same horizontal plane as the lower surface of the base plate 1, the upper edge of the flexible plate 3 is higher than the upper edge of the steel truss 2, and a folded fiber mesh layer 4 is connected between the base plate 1 and the flexible plate 3.

[0035] When in use, after several groups of cast bottom plates 1 are spliced ​​together, concrete can be poured on top of the bottom plates 1. During the process of pouring concrete, the flexible plate 3 can be driven to move outward. When the flexible plate 3 moves outward, the folded fiber mesh layer 4 is driven to unfold. At the same time, when the flexible plate 3 moves outward to a certain position, two adjacent groups of flexible plates 3 are abutted against each other, thereby ensuring the stability and sealing between the two groups of bottom plates 1. As the concrete continues to be poured, the concrete falls on the unfolded fiber mesh layer 4. The fiber mesh layer 4 can support the concrete and prevent it from dripping, thereby further ensuring the sealing between the two groups of bottom plates 1 when pouring concrete.

[0036] Exemplarily, the present invention also includes that the base plate 1 is provided with an expansion structure for driving the adjustable movable structure to move to a side away from the base plate 1 .

[0037] When in use, during the process of pouring concrete, the expansion structure can be relied upon to drive the flexible plate 3 to move outward, thereby facilitating the movement of the adjustable movable structure and improving the sealing between the two sets of adjacent base plates 1 to prevent concrete from overflowing from the joints of the two sets of base plates 1.

[0038] For example, Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, the present invention also includes that a plurality of groups of horizontally arranged support structures are provided above the base plate 1, the support structures are used to improve the strength of the base plate 1, and the expansion structures are installed on both sides of the support structures; the support structures include horizontally arranged support pipes 5, the outer side of the support pipes 5 is fixedly connected to one side of the steel truss 2, both ends of the support pipes 5 are fixedly connected with connecting pipes 6 inclined downward, the upper end of the connecting pipe 6 is connected with one end of the support pipe 5, and the end of the connecting pipe 6 away from the support pipe 5 is connected with a horizontally arranged installation pipe 7, the support pipe 5, the connecting pipe 6 and the installation pipe 7 are an integrated structure, and the installation pipe 7 is provided with an expansion structure.

[0039] When in use, the support pipe 5, the connecting pipe 6 and the mounting pipe 7 can improve the strength of the bottom plate 1 after the concrete is poured;

[0040] The installation tube 7 can improve the stability of the expansion structure installation and facilitate the subsequent outward movement of the flexible plate 3, thereby ensuring the stability and sealing between the two groups of bottom plates 1.

[0041] For example, Figure 1 , Figure 3 As shown, the present invention also includes that a plurality of groups of openings 8 are provided on the outer side of the support tube 5, and the openings 8 are connected to the inside of the support tube 5, and the expansion structure drives the adjustable movable structure to work by swelling by absorbing water.

[0042] When in use, after several groups of cast base plates 1 are spliced ​​together, concrete can be poured on top of the base plates 1. When the concrete on top of the base plates 1 reaches a certain amount, the water contained in the concrete enters the support pipe 5 through the opening 8, and the water enters the installation pipe 7 through the support pipe 5 and the connecting pipe 6, thereby driving the expansion structure to work, and the expansion structure absorbs water and expands to drive the flexible plate 3 to move outward. When two adjacent groups of flexible plates 3 move outward to a certain position, the two adjacent groups of flexible plates 3 contact, thereby ensuring the sealing between the two groups of base plates 1 and preventing concrete from overflowing from the splicing of the two groups of base plates 1.

[0043] In order to facilitate the flexible board 3 to move outward, for example, Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the present invention also includes that the expansion structure includes a movable plate 9 slidably connected to the inner wall of the mounting tube 7, the movable plate 9 is fixedly connected to a horizontally arranged movable rod 10 on a side away from the support tube 5, a sealing plate 11 is installed at one end of the mounting tube 7 away from the support tube 5, the movable rod 10 passes through the sealing plate 11 and is slidably connected to the sealing plate 11, the end of the movable rod 10 away from the movable plate 9 is fixedly connected to one side of the flexible plate 3, the inner wall of one end of the connecting tube 6 close to the mounting tube 7 is fixedly connected to a filter plate 12, a plurality of groups of filter holes 13 are provided on the filter plate 12, a water-absorbing expansion material 14 is provided inside the mounting tube 7, and the water-absorbing expansion material 14 is located between the movable plate 9 and the filter plate 12.

[0044] When in use, when the concrete above the bottom plate 1 reaches a certain amount, the water contained in the concrete enters the support pipe 5 through the opening 8, and the water enters the connecting pipe 6 through the support pipe 5. The inclined connecting pipe 6 can produce a guiding effect, which is convenient for the water to enter the installation pipe 7. After the water enters the connecting pipe 6, the filter plate 12 and the filter hole 13 are used to filter the concrete mud contained in the water, so as to facilitate the water to enter the installation pipe 7. After the water enters the installation pipe 7, it interacts with the water-absorbing and expanding material 1 in the installation pipe 7. 4, and drives the water-swellable material 14 to expand. The expansion of the water-swellable material 14 squeezes the movable plate 9 and the movable rod 10 to move. When the movable rod 10 moves, it drives the flexible plate 3 to move. When the flexible plate 3 moves, it drives the fiber mesh layer 4 to move and unfold. When the fiber mesh layer 4 unfolds, the concrete on the bottom plate 1 flows onto the unfolded fiber mesh layer 4. The fiber mesh layer 4 can support the concrete and prevent the concrete from dripping, thereby improving the sealing between the joints of the two adjacent groups of bottom plates 1 and preventing the concrete from overflowing from the joints when pouring concrete.

[0045] Exemplarily, the present invention also includes that a magnet is embedded and installed on the flexible board 3, and the flexible boards 3 on two adjacent groups of bottom boards 1 are attracted to each other through the magnet.

[0046] During use, after several groups of cast base plates 1 are spliced ​​together, two adjacent groups of flexible plates 3 can be manually pulled closer to each other and in contact, and the two groups of flexible plates 3 can be magnetically adsorbed by magnets, thereby improving the sealing between the joints of the two groups of base plates 1 and preventing concrete from overflowing from the joints.

[0047] For example, Figure 1 As shown, the present invention also includes that the top of the base plate 1 is detachably connected with symmetrically arranged hanging buckles 15 .

[0048] When in use, the base plate 1 can be conveniently hoisted by relying on the hoisting buckles 15, thereby completing the splicing of several groups of base plates 1 and improving the convenience of installation.

[0049] Exemplarily, the steel truss 2 uses steel bars as the upper chord, the lower chord and the web, and is connected by resistance spot welding.

[0050] When in use, the overall stability of the steel bar truss 2 can be improved.

[0051] The present invention also provides a construction method of a concrete steel bar truss floor slab, using the above-mentioned concrete steel bar truss floor slab, specifically comprising the following steps:

[0052] S1. Hoist several groups of concrete steel truss floor slabs to designated locations on the floor;

[0053] S2. Pour concrete on the concrete steel truss floor slabs one by one, and ensure that the height of the concrete does not exceed the height of the adjustable movable structure;

[0054] S3. During the concrete pouring process, the gaps between adjacent concrete steel truss floor slabs are closed by means of an adjustable movable structure;

[0055] S4. After the adjustable movable structure closes the gap between the adjacent concrete steel truss floor slabs, continue pouring concrete to the specified thickness to complete the pouring work.

[0056] When the present invention is in use, the bottom plate 1 can be easily hoisted by relying on the hoisting buckle 15, so as to complete the splicing of several groups of bottom plates 1. After the splicing of several groups of cast bottom plates 1 is completed, concrete can be poured on the top of the bottom plate 1. When the concrete on the bottom plate 1 reaches a certain amount, the water contained in the concrete enters the support pipe 5 through the opening 8, and the water enters the connecting pipe 6 through the support pipe 5. The connecting pipe 6 set obliquely can produce a guiding effect, which is convenient for the water to enter the installation pipe 7. When the water enters the connecting pipe 6, the filter plate 12 and the filter hole 13 are used to filter the water. The concrete slurry contained in the water body is filtered to facilitate the water body to enter the installation pipe 7. When the water body enters the installation pipe 7, it contacts the water-absorbing and expanding material 14 in the installation pipe 7, and drives the water-absorbing and expanding material 14 to expand. The expansion of the water-absorbing and expanding material 14 squeezes the moving plate 9 and the moving rod 10 to move. When the moving rod 10 moves, it drives the flexible plate 3 to move. When the flexible plate 3 moves, it drives the fiber mesh layer 4 to move and unfold. When the fiber mesh layer 4 unfolds, the concrete on the bottom plate 1 flows onto the unfolded fiber mesh layer 4. The fiber mesh layer 4 can support the concrete and prevent the concrete from dripping.

[0057] At the same time, when the flexible plate 3 moves outward to a certain position, two adjacent groups of flexible plates 3 are pressed against each other, thereby ensuring the stability and sealing between the two groups of base plates 1, preventing concrete from overflowing from the joints of the two groups of base plates 1, and eliminating the need to manually set water stop strips at the joints, thereby improving construction efficiency and facilitating the splicing of the concrete steel truss 2 floor plates.

[0058] When in use, another embodiment of the present invention can facilitate the hoisting of the base plate 1 by relying on the hoisting buckle 15, so as to complete the splicing of several groups of base plates 1. After the splicing of several groups of cast base plates 1 is completed, two adjacent groups of flexible plates 3 can be manually pulled close to each other and in contact, and the two groups of flexible plates 3 can be magnetically adsorbed by relying on magnets, thereby improving the sealing between the joints of the two groups of base plates 1 and preventing concrete from overflowing from the joints.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A concrete steel bar truss floor slab, characterized in that: The invention comprises a bottom plate (1), the bottom plate (1) being cast by concrete and a fiber mesh, a plurality of groups of steel trusses (2) being provided on the upper surface of the bottom plate (1), the bottom plate (1) and the plurality of groups of steel trusses (2) being cast by concrete at one time, and an adjustable movable structure for reducing the size of a gap between two adjacent groups of bottom plates (1) being installed on both sides of the bottom plate (1); The adjustable movable structure comprises flexible plates (3) arranged on both sides of the bottom plate (1), the flexible plates (3) being arranged vertically, the lower edge of the flexible plates (3) being on the same horizontal plane as the lower surface of the bottom plate (1), the upper edge of the flexible plates (3) being higher than the upper edge of the steel truss (2), and a folded fiber mesh layer (4) being connected between the bottom plate (1) and the flexible plates (3); The bottom plate (1) is provided with an expansion structure for driving the adjustable movable structure to move toward a side away from the bottom plate (1).

2. A concrete steel bar truss floor slab according to claim 1, characterized in that A plurality of groups of horizontally arranged support structures are provided above the base plate (1), the support structures are used to improve the strength of the base plate (1), and the expansion structures are installed on both sides of the support structures; the support structures each comprise a horizontally arranged support pipe (5), the outer side of the support pipe (5) is fixedly connected to one side of the steel bar truss (2), both ends of the support pipe (5) are fixedly connected to a downwardly inclined connecting pipe (6), the upper end of the connecting pipe (6) is connected to one end of the support pipe (5), and the end of the connecting pipe (6) away from the support pipe (5) is connected to a horizontally arranged mounting pipe (7), the support pipe (5), the connecting pipe (6) and the mounting pipe (7) are an integrated structure, and the mounting pipe (7) is provided with an expansion structure.

3. A concrete steel bar truss floor slab according to claim 2, characterized in that: A plurality of groups of openings (8) are provided on the outside of the support tube (5), the openings (8) being communicated with the inside of the support tube (5), and the expansion structure drives the adjustable movable structure to operate by swelling through water absorption.

4. A concrete steel bar truss floor slab according to claim 3, characterized in that: The expansion structure comprises a movable plate (9) slidably connected to the inner wall of the mounting tube (7); a side of the movable plate (9) away from the support tube (5) is fixedly connected to a movable rod (10) arranged horizontally; an end of the mounting tube (7) away from the support tube (5) is installed with a sealing plate (11); the movable rod (10) passes through the sealing plate (11) and is slidably connected to the sealing plate (11); an end of the movable rod (10) away from the movable plate (9) is fixedly connected to one side of the flexible plate (3); an inner wall of an end of the connecting tube (6) close to the mounting tube (7) is fixedly connected to a filter plate (12); a plurality of groups of filter holes (13) are provided on the filter plate (12); a water-absorbing expansion material (14) is provided inside the mounting tube (7); the water-absorbing expansion material (14) is located between the movable plate (9) and the filter plate (12).

5. The concrete steel bar truss floor slab according to claim 4, characterized in that: Magnets are embedded and mounted on the flexible plates (3), and the flexible plates (3) on two adjacent groups of bottom plates (1) are attracted to each other via the magnets.

6. A concrete steel bar truss floor slab according to claim 5, characterized in that: The top of the bottom plate (1) is detachably connected to symmetrically arranged lifting buckles (15).

7. The concrete steel bar truss floor slab according to claim 6, characterized in that: The steel bar truss (2) uses steel bars as the upper chord, the lower chord and the web, and is connected by resistance spot welding.

8. A method for constructing a concrete steel bar truss floor slab, characterized in that: The concrete steel bar truss floor slab according to any one of claims 1 to 7 is used, specifically comprising the following steps: S1, hoisting a plurality of groups of concrete steel bar truss floor slabs to designated positions on the floor; S2. Pour concrete on the concrete steel truss floor slabs one by one, and ensure that the height of the concrete does not exceed the height of the adjustable movable structure; S3. During the concrete pouring process, the gaps between adjacent concrete steel truss floor slabs are closed by means of an adjustable movable structure; S4. After the adjustable movable structure closes the gap between the adjacent concrete steel truss floor slabs, continue pouring concrete to the specified thickness to complete the pouring work.

Images