A construction structure floor concrete construction joint steel mesh interception tool and construction method
By using steel mesh interception units and wooden formwork in the building structure floor slabs and employing a snap-fit connection method, the problems of difficult assembly and heavy binding work of traditional construction joint interception tools are solved, achieving efficient and robust construction joint formation and tool reusability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- THE THIRD CONSTR ENG CO LTD OF CHINA CONSTR SECOND ENG BUREAU
- Filing Date
- 2026-04-02
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional construction joint interception measures, such as wooden formwork and wire mesh binding, have problems such as difficulty in assembling along the length, difficulty in controlling flatness, large amount of binding work, poor firmness, and poor forming quality.
Multiple steel mesh interception units and wooden formwork for building structural floor slabs are used. The steel mesh interception units are fixed by snap-fit connections. Screws and connecting rods are used to fix the steel mesh interception units to the wooden formwork to form a steel mesh interception tool. The steel mesh interception unit consists of a slot, a connecting rod, and a wedge. The slot is made of PVC material, and the wedge is made of rubber material.
It achieves simple construction, good firmness, and high forming quality, reduces the amount of binding work, improves work efficiency, and eliminates the need for secondary treatment of concrete joints after demolition, thus improving the turnover rate of tools.
Smart Images
Figure CN122236271A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of building engineering technology, and in particular to a steel mesh interception tool and construction method for concrete construction joints in building structural floor slabs. Background Technology
[0002] Construction of floor slabs for ultra-long and ultra-large buildings is difficult in a single phase, and is often carried out in multiple phases. Construction joints need to be left between the phases. When the concrete on one side of the construction joint is poured first, it needs to be intercepted at the construction joint to prevent concrete from overflowing.
[0003] Traditional construction joint interception measures include wooden formwork (comb board) interception and wire mesh interception.
[0004] Using wooden formwork (comb board) for interception presents challenges in length-wise assembly and flatness control. Warping and misalignment of the wooden formwork can easily lead to bending and misalignment of the concrete construction joints. Furthermore, after the wooden formwork is used for interception, the concrete joints tend to be smooth, which is not conducive to the bonding of new and old concrete. A secondary roughening process is required, which is time-consuming and labor-intensive.
[0005] Using wire mesh for interception requires construction after the floor slab reinforcement is installed, which presents technical problems such as construction difficulties, large amount of binding work, poor stability, and poor forming quality. Summary of the Invention
[0006] To overcome the technical problems of large binding workload, difficult construction, poor stability and poor forming quality of wire mesh interception, this invention provides a tool and construction method for intercepting steel mesh at the construction joints of concrete floor slabs in building structures.
[0007] A steel mesh interception tool for construction joints in concrete floor slabs of building structures includes multiple steel mesh interception units and a wooden formwork for the building structure floor slab. Each steel mesh interception unit is provided with a male buckle and a female groove at its first and last ends. The construction joint position is set on the wooden formwork for the building structure floor slab. Along one side of the construction joint, multiple steel mesh interception units are fixed to the wooden formwork for the building structure floor slab by screws. The first and last ends of the multiple steel mesh interception units are connected by male and female buckles.
[0008] Furthermore, the steel mesh interception unit includes a slot, multiple connecting rods, a steel mesh, and multiple wedges. The slot includes a top slot and a bottom slot, which are symmetrically arranged. The bottom slot is fixed to one side of the construction joint on the wooden formwork of the building structure floor slab. The multiple connecting rods are symmetrically arranged along both sides of the top and bottom slots at certain intervals. The top end of the connecting rod is inserted into the top slot, and the bottom end of the connecting rod is inserted into the bottom slot. The top and bottom ends of the steel mesh are laid in the top and bottom slots, respectively. The multiple wedges are inserted into the top and bottom slots at certain intervals, pressing the top and bottom ends of the steel mesh into the top and bottom slots. The length of the steel mesh interception unit is 1 meter to 1.5 meters.
[0009] Furthermore, the top slot has a male buckle and a female slot evenly spaced from bottom to top at its first end, and a female slot and a male buckle evenly spaced from bottom to top at its last end. The bottom slot has a female slot and a male buckle evenly spaced from bottom to top at its first end, and a male buckle and a female slot evenly spaced from bottom to top at its last end.
[0010] Furthermore, the top slot includes an upper through slot, multiple upper crossbars, multiple inner upper connecting rod slots, and multiple outer upper connecting rod slots. Multiple inner upper connecting rod slots are arranged at regular intervals on the outer surface of one side wall of the upper through slot. On the outer surface of the other side wall of the upper through slot, one end of multiple upper crossbars is fixedly connected to the multiple inner upper connecting rod slots at symmetrical positions. The other ends of the multiple upper crossbars are fixedly connected to the outer surface of one side wall of the multiple outer upper connecting rod slots. The bottom slot includes a lower through slot, multiple lower crossbars, multiple inner lower connecting rod slots, and multiple outer lower connecting rod slots. Multiple inner lower connecting rod slots are arranged at regular intervals on the outer surface of one side wall of the lower through slot. On the outer surface of the other side wall of the upper through slot, multiple inner lower connecting rod slots are arranged at symmetrical positions. One end of multiple lower horizontal bars is fixedly connected to the position, and the other end of the multiple lower horizontal bars is fixedly connected to the outer surface of one side wall of multiple outer lower connecting rod slots. Bolt holes are provided on the multiple lower horizontal bars, and screws pass through the bolt holes to fix the multiple lower horizontal bars to one side of the construction joint on the wooden formwork of the building structure floor slab. The top and bottom ends of the steel mesh are respectively laid in the upper and lower through grooves. Multiple wedges are inserted into the upper and lower through grooves at a certain distance to press the top and bottom ends of the steel mesh into the upper and lower through grooves. The top and bottom ends of multiple connecting rods are respectively inserted into multiple inner upper connecting rod slots and multiple inner lower connecting rod slots. The top and bottom ends of multiple connecting rods are respectively inserted into multiple outer upper connecting rod slots and multiple outer lower connecting rod slots.
[0011] Furthermore, the upper through groove has female and male buckles evenly spaced from bottom to top at its beginning end, and female and male buckles evenly spaced from bottom to top at its end. The lower through groove has female and male buckles evenly spaced from bottom to top at its beginning end, and female and male buckles evenly spaced from bottom to top at its end.
[0012] Furthermore, the interval is a certain distance of 100mm.
[0013] Furthermore, the upper through groove, lower through groove, inner upper connecting rod groove, outer upper connecting groove, inner lower connecting groove, and outer upper connecting groove are made of PVC material.
[0014] Furthermore, the wedge is made of rubber.
[0015] A method for constructing a steel mesh interception tool for concrete construction joints in building structural floor slabs includes the following steps: Step 1: Determine the length of the connecting rod based on the thickness of the building's floor slab; Step 2: Measure and lay out the lines. Mark the construction joint location on the wooden formwork of the building structure floor slab, and mark the installation position of the interception tool on one side of the construction joint location. Step 3: Along one side of the construction joint of the building structure floor slab, fix the steel mesh interception units one by one, and connect the first and last ends of each steel mesh interception unit with a snap fastener to form a steel mesh interception tool for one side of the concrete construction joint of the building structure floor slab. Step 4: Begin pouring the structural floor slabs. Step 5: After the concrete to be poured has initially set, remove the steel mesh interception tool and reuse the disassembled steel mesh interception tool.
[0016] Furthermore, step 3 includes the following steps: Step 3.1: Fix the bottom slot of the first steel mesh interception unit to the wooden formwork of the building structure floor slab along one side of the construction joint. After connecting the bottom slot of the second steel mesh interception unit with the first and last snaps, fix the bottom slot of the second steel mesh interception unit to the side of the building structure floor slab where the construction joint is set. Fixing the bottom slot is done by fixing the lower horizontal bar of the bottom slot to the wooden formwork of the building structure floor slab. The lower horizontal bar is fixed to the wooden formwork of the building structure floor slab by screws passing through the bolt holes on the lower horizontal bar. In this way, the bottom slots of N steel mesh interception units are arranged along one side of the construction joint on the wooden formwork of the building structure floor slab to form the bottom slots of the steel mesh interception tool. Step 3.2: Insert the lower ends of multiple connecting rods into the inner and outer lower connecting rod slots of the fixed bottom card slot, and insert the upper ends of multiple connecting rods into the outer and inner upper connecting rod slots of the top card slot symmetrically positioned in the bottom card slot to fix the top card slot. Corresponding to each fixed bottom card slot, insert the lower ends of multiple connecting rods into the inner and outer lower connecting rod slots, and insert the upper ends of multiple connecting rods into the upper outer and inner connecting rod slots of the top card slot corresponding to each fixed bottom card slot to fix multiple top card slots. The adjacent top card slots are connected end to end with snap fasteners to form the top card slot of the steel mesh interception tool. Step 3.3: Lay the top of the steel mesh in the upper through groove of the top clamping groove, and insert multiple wedges evenly spaced into the upper through groove of the top clamping groove to fix the top of the steel mesh in the upper through groove of the top clamping groove. Lay the bottom of the steel mesh in the lower through groove of the bottom clamping groove, tighten the steel mesh, and insert multiple wedges evenly spaced into the lower through groove of the bottom clamping groove to fix the bottom of the steel mesh in the lower through groove of the bottom clamping groove. This completes the installation of the steel mesh interception tool.
[0017] The beneficial effects of this invention are as follows: This application provides a steel mesh interception tool for concrete construction joints in building structural floor slabs, which solves the technical problems of large binding workload, difficult construction, poor stability, and poor forming quality associated with steel wire mesh interception. It has the advantages of simple structure, factory prefabrication, and a detachable structure. On-site installation and dismantling are convenient; ordinary nails can secure it firmly, resulting in good forming effect and improved work efficiency. It is also reusable, with a high degree of tool standardization and utilization. After the interception tool is removed, the concrete at the joint achieves a roughened effect, eliminating the need for secondary chiseling and saving time and labor. Attached Figure Description
[0018] Figure 1 This is a side elevation sectional view of a steel mesh interception tool for construction joints in concrete floor slabs of a building structure according to the present invention. Figure 2 This is a sectional view of the side elevation of a steel mesh interception tool for concrete construction joints in building structural floor slabs after concrete pouring, according to the present invention. Figure 3 yes Figure 1 Sectional view of section 1-1.
[0019] Explanation of symbols in the attached diagram: 1. Snap fastener, 11. Bottom slot, 12. Top slot, 2. Connecting rod, 3. Screw, 4. Wooden formwork for building structural floor slabs, 5. Steel mesh, 6. Wedge block, 7. Concrete for building structural floor slabs, 8. Top through slot, 9. Bottom through slot, 10. Top horizontal bar, 13. Bottom horizontal bar, 14. Inner upper connecting rod groove, 15. Outer upper connecting rod groove, 16. Inner lower connecting rod groove, 17. Outer lower connecting rod groove. Detailed Implementation
[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0021] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0022] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0023] In the description of this patent, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0024] A tool for intercepting steel mesh at construction joints in concrete floor slabs of building structures, such as Figures 1 to 3 As shown, it includes multiple steel mesh interception units and wooden formwork for building structure floor slabs. Each steel mesh interception unit is provided with a male buckle and a female groove at its first and last ends. Construction joint positions are set along the wooden formwork for building structure floor slabs. Multiple steel mesh interception units are fixed to the wooden formwork for building structure floor slabs along one side of the construction joint by screws. The first and last ends of the multiple steel mesh interception units are connected by male and female buckles.
[0025] This steel mesh interception tool consists of multiple steel mesh interception units connected end-to-end by snap fasteners. These fasteners facilitate the assembly and disassembly of the steel mesh interception units. Each steel mesh interception unit is fixed to the wooden formwork of the building's floor slab with screws. The construction joint is positioned on the wooden formwork of the floor slab, and the steel mesh interception tool is fixed along one side of the construction joint. This invention's steel mesh interception tool does not rely on floor slab reinforcement for fixation; the fixing method is relatively independent. After the interception tool is removed, the concrete at the joint is straight and achieves a roughened effect, eliminating the need for secondary chiseling, saving time and labor.
[0026] Furthermore, such as Figures 1 to 3 As shown, the steel mesh interception unit includes a slot, multiple connecting rods 2, a steel mesh 5, and multiple wedges 6. The slot includes a top slot 12 and a bottom slot 11, which are symmetrically arranged. The bottom slot 11 is fixed to one side of the construction joint on the wooden formwork 4 of the building structure floor slab. The multiple connecting rods 2 are symmetrically arranged at a certain distance along both sides of the top slot 12 and the bottom slot 11. The top end of the connecting rod 2 is inserted into the top slot 12, and the bottom end of the connecting rod 2 is inserted into the bottom slot 11. The top and bottom ends of the steel mesh 5 are laid on the top slot 12 and the bottom slot 11, respectively. The multiple wedges 6 are inserted at a certain distance into the top slot 12 and the bottom slot 11, pressing the top and bottom ends of the steel mesh 5 firmly into the top slot 12 and the bottom slot 11. The length of the steel mesh 5 interception unit is 1 meter to 1.5 meters. The top and bottom slots are made of PVC material, with an overall width of 70 mm, a height of 30 mm, and a wall thickness of 5 mm.
[0027] Furthermore, such as Figures 1 to 3As shown, the top slot 12 has female and male buckles evenly spaced from bottom to top at its first end, and female and male buckles evenly spaced from bottom to top at its last end. The bottom slot 11 has female and male buckles evenly spaced from bottom to top at its first end, and female and male buckles evenly spaced from bottom to top at its last end.
[0028] Furthermore, such as Figures 1 to 3 As shown, the top slot 12 includes an upper through slot 8, multiple upper crossbars 10, multiple inner upper connecting rod slots 14, and multiple outer upper connecting rod slots 15. Multiple inner upper connecting rod slots 14 are arranged at regular intervals on the outer surface of one side wall of the upper through slot 8. On the outer surface of the other side wall of the upper through slot 8, one end of multiple upper crossbars 10 is fixedly connected to the multiple inner upper connecting rod slots 14 at symmetrical positions. The other end of the multiple upper crossbars 10 is fixedly connected to the outer surface of one side wall of the multiple outer upper connecting rod slots 15. The bottom slot 11 includes a lower through slot 9, multiple lower crossbars 13, multiple inner lower connecting rod slots 16, and multiple outer lower connecting rod slots 17. Multiple inner lower connecting rod slots 16 are arranged at regular intervals on the outer surface of one side wall of the lower through slot 9. On the outer surface of the other side wall of the upper through slot 9, multiple inner lower connecting rod slots 16 are arranged at regular intervals. 6. Multiple lower horizontal bars 13 are fixedly connected at one end in symmetrical positions. The other end of the multiple lower horizontal bars 13 is fixedly connected to the outer surface of one side wall of multiple outer lower connecting rod grooves 17. Bolt holes are provided on the multiple lower horizontal bars 13. Screws 3 pass through the bolt holes to fix the multiple lower horizontal bars 13 to the construction joint side of the wooden formwork 4 of the building structure floor slab. The top and bottom ends of the steel mesh 5 are respectively laid in the upper through groove 8 and the lower through groove 9. Multiple wedges 6 are inserted into the upper through groove 8 and the lower through groove 9 at a certain distance to press the top and bottom ends of the steel mesh 5 into the upper through groove 8 and the lower through groove 9. The top and bottom ends of multiple connecting rods 2 are respectively inserted into multiple inner upper connecting rod grooves 14 and multiple inner lower connecting rod grooves 16. The top and bottom ends of multiple connecting rods 2 are respectively inserted into multiple outer upper connecting rod grooves 15 and multiple outer lower connecting rod grooves 17. The upper through groove 8 and the lower through groove 9 are used to install and fix the steel mesh 5. The connecting rod 2 serves as both a connecting component between the bottom and top slots and a supporting component for the wire mesh, and together with the wire mesh, it bears the lateral pressure of the concrete in the building structure floor slab.
[0029] Furthermore, such as Figures 1 to 3 As shown, the upper through groove 8 has female and male buckles evenly spaced from bottom to top at its beginning end, and female and male buckles evenly spaced from bottom to top at its end. The lower through groove 9 has female and male buckles evenly spaced from bottom to top at its beginning end, and female and male buckles evenly spaced from bottom to top at its end.
[0030] Furthermore, such as Figures 1 to 3 As shown, the interval is a certain distance of 100mm.
[0031] Furthermore, such as Figures 1 to 3As shown, the upper through groove 8, lower through groove 9, inner upper connecting rod groove 14, outer upper connecting groove 15, inner lower connecting groove 16 and outer upper connecting groove 17 are made of PVC material.
[0032] Furthermore, such as Figures 1 to 3 As shown, the wedge 6 is made of rubber. The dimensions of the wedge 6 are 30mm × 30mm × 7mm.
[0033] This invention also discloses a construction method for a steel mesh interception tool for concrete construction joints in building structural floor slabs, comprising the following steps: Step 1: Determine the length of the connecting rod based on the thickness of the building's floor slab; Step 2: Measure and lay out the lines. Mark the construction joint location on the wooden formwork of the building structure floor slab, and mark the installation position of the interception tool on one side of the construction joint location. Step 3: Along one side of the construction joint of the building structure floor slab, fix the steel mesh interception units one by one, and connect the first and last ends of each steel mesh interception unit with a snap fastener to form a steel mesh interception tool for one side of the concrete construction joint of the building structure floor slab. Step 4: Begin pouring the structural floor slabs. Step 5: After the concrete to be poured has initially set, remove the steel mesh interception tool and reuse the disassembled steel mesh interception tool.
[0034] Furthermore, step 3 includes the following steps: Step 3.1: Fix the bottom slot of the first steel mesh interception unit to the wooden formwork of the building structure floor slab along one side of the construction joint. After connecting the bottom slot of the second steel mesh interception unit with the first and last snaps, fix the bottom slot of the second steel mesh interception unit to the side of the building structure floor slab where the construction joint is set. Fixing the bottom slot is done by fixing the lower horizontal bar of the bottom slot to the wooden formwork of the building structure floor slab. The lower horizontal bar is fixed to the wooden formwork of the building structure floor slab by screws passing through the bolt holes on the lower horizontal bar. In this way, the bottom slots of N steel mesh interception units are arranged along one side of the construction joint on the wooden formwork of the building structure floor slab to form the bottom slots of the steel mesh interception tool. Step 3.2: Insert the lower ends of multiple connecting rods into the inner and outer lower connecting rod slots of the fixed bottom card slot, and insert the upper ends of multiple connecting rods into the outer and inner upper connecting rod slots of the top card slot symmetrically positioned in the bottom card slot to fix the top card slot. Corresponding to each fixed bottom card slot, insert the lower ends of multiple connecting rods into the inner and outer lower connecting rod slots, and insert the upper ends of multiple connecting rods into the upper outer and inner connecting rod slots of the top card slot corresponding to each fixed bottom card slot to fix multiple top card slots. The adjacent top card slots are connected end to end with snap fasteners to form the top card slot of the steel mesh interception tool. Step 3.3: Lay the top of the steel mesh in the upper through groove of the top clamping groove, and evenly spaced insert multiple wedges into the upper through groove of the top clamping groove to fix the top of the steel mesh in the upper through groove of the top clamping groove. Lay the bottom of the steel mesh in the lower through groove of the bottom clamping groove, tighten the steel mesh, and evenly spaced insert multiple wedges into the lower through groove of the bottom clamping groove to fix the bottom of the steel mesh in the lower through groove of the bottom clamping groove. This completes the installation of the steel mesh interception tool.
[0035] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the scope of protection of the present invention. Furthermore, some terminology used in this specification and claims is not limiting, but merely for ease of description.
Claims
1. A tool for intercepting steel mesh at construction joints in concrete floor slabs of building structures, characterized in that, It includes multiple steel mesh interception units and building structure floor slab wooden formwork. Each steel mesh interception unit is provided with a male buckle and a female groove at its first and last ends. The construction joint position is set on the building structure floor slab wooden formwork. Along one side of the construction joint, multiple steel mesh interception units are fixed to the building structure floor slab wooden formwork by screws. The first and last ends of the multiple steel mesh interception units are connected by male and female buckles (1).
2. The steel mesh interception tool for concrete construction joints in building structural floor slabs according to claim 1, characterized in that, The steel mesh interception unit includes a top slot (12), a bottom slot (11), multiple connecting rods (2), a steel mesh (5), and multiple wedges (6). The top slot (12) and the bottom slot (11) are symmetrically arranged. The bottom slot (11) is fixed to one side of the construction joint on the wooden formwork (4) of the building structure floor slab. The multiple connecting rods (2) are symmetrically arranged at a certain distance along both sides of the top slot (12) and the bottom slot (11). The top end of the steel mesh (5) is inserted into the top slot (12), and the bottom end of the connecting rod (2) is inserted into the bottom slot (11). The top and bottom ends of the steel mesh (5) are respectively laid in the top slot (12) and the bottom slot (11). Multiple wedges (6) are inserted into the top slot (12) and the bottom slot (11) at a certain distance, pressing the top and bottom ends of the steel mesh (5) into the top slot (12) and the bottom slot (11). The length of the steel mesh (5) interception unit is 1 meter to 1.5 meters.
3. The steel mesh interception tool for concrete construction joints in building structural floor slabs according to claim 2, characterized in that, The top slot (12) has a male buckle and a female slot evenly spaced from bottom to top at its first end, and a female slot and a male buckle evenly spaced from bottom to top at its last end. The bottom slot (11) has a female slot and a male buckle evenly spaced from bottom to top at its first end, and a male buckle and a female slot evenly spaced from bottom to top at its last end.
4. The steel mesh interception tool for concrete construction joints in building structural floor slabs according to claim 3, characterized in that, The top slot (12) includes an upper through slot (8), multiple upper crossbars (10), multiple inner upper connecting rod slots (14), and multiple outer upper connecting rod slots (15). Multiple inner upper connecting rod slots (14) are arranged at regular intervals on the outer surface of one side wall of the upper through slot (8). On the outer surface of the other side wall of the upper through slot (8), one end of multiple upper crossbars (10) is fixedly connected to multiple inner upper connecting rod slots (14) at symmetrical positions. The other end of multiple upper crossbars (10) is fixedly connected to the outer surface of one side wall of multiple outer upper connecting rod slots (15). The bottom slot (11) includes a lower through slot (9), multiple lower crossbars (13), multiple inner lower connecting rod slots (16), and multiple outer lower connecting rod slots (17). Multiple inner lower connecting rod slots (16) are arranged at regular intervals on the outer surface of one side wall of the lower through slot (9). On the outer surface of the other side wall of the upper through slot (9), multiple inner lower connecting rod slots (16) are symmetrically connected to multiple inner lower connecting rod slots (16). One end of multiple lower horizontal bars (13) is fixedly connected to the position, and the other end of multiple lower horizontal bars (13) is fixedly connected to the outer surface of one side wall of multiple outer lower connecting rod grooves (17). Bolt holes are provided on multiple lower horizontal bars (13), and screws (3) pass through the bolt holes to fix multiple lower horizontal bars (13) to the construction joint side of the wooden formwork (4) of the building structure floor slab. The top and bottom ends of the steel mesh (5) are respectively laid in the upper through groove (8) and the lower through groove (9). Multiple wedges (6) are inserted into the upper through groove (8) and the lower through groove (9) at a certain distance to press the top and bottom ends of the steel mesh (5) into the upper through groove (8) and the lower through groove (9). The top and bottom ends of multiple connecting rods (2) are respectively inserted into multiple inner upper connecting rod grooves (14) and multiple inner lower connecting rod grooves (16). The top and bottom ends of multiple connecting rods (2) are respectively inserted into multiple outer upper connecting rod grooves (15) and multiple outer lower connecting rod grooves (17).
5. The steel mesh interception tool for concrete construction joints in building structural floor slabs according to claim 4, characterized in that, The upper through groove (8) has a male buckle and a female groove evenly spaced from bottom to top at the beginning end, and a female groove and a male buckle evenly spaced from bottom to top at the end end. The lower through groove (9) has a female groove and a male buckle evenly spaced from bottom to top at the beginning end, and a male buckle and a female groove evenly spaced from bottom to top at the end end.
6. The steel mesh interception tool for concrete construction joints in building structural floor slabs according to claim 4, characterized in that, The interval is a certain distance of 100mm.
7. The steel mesh interception tool for concrete construction joints in building structural floor slabs according to any one of claims 4 or 5, characterized in that, The upper through groove (8), lower through groove (9), inner upper connecting rod groove (14), outer upper connecting groove (15), inner lower connecting groove (16) and outer upper connecting groove (17) are made of PVC material.
8. The steel mesh interception tool for concrete construction joints in building structural floor slabs according to any one of claims 2 or 4, characterized in that, The wedge (6) is made of rubber.
9. A construction method for a steel mesh interception tool for concrete construction joints in building structural floor slabs according to claim 5, characterized in that, Includes the following steps: Step 1: Determine the length of the connecting rod based on the thickness of the building's floor slab; Step 2: Measure and lay out the lines. Mark the construction joint location on the wooden formwork of the building structure floor slab, and mark the installation position of the interception tool on one side of the construction joint location. Step 3: Along one side of the construction joint of the building structure floor slab, fix the steel mesh interception units one by one, and connect the first and last ends of each steel mesh interception unit with a snap fastener to form a steel mesh interception tool for one side of the concrete construction joint of the building structure floor slab. Step 4: Begin pouring the structural floor slabs. Step 5: After the concrete to be poured has initially set, remove the steel mesh interception tool and reuse the disassembled steel mesh interception tool.
10. A construction method for a steel mesh interception tool for concrete construction joints in building structural floor slabs according to claim 5, characterized in that, Step 3 includes the following steps: Step 3.1: Fix the bottom slot of the first steel mesh interception unit to the wooden formwork of the building structure floor slab along one side of the construction joint. After connecting the bottom slot of the second steel mesh interception unit with the first and last snaps, fix the bottom slot of the second steel mesh interception unit to the side of the building structure floor slab where the construction joint is set. Fixing the bottom slot is done by fixing the lower horizontal bar of the bottom slot to the wooden formwork of the building structure floor slab. The lower horizontal bar is fixed to the wooden formwork of the building structure floor slab by screws passing through the bolt holes on the lower horizontal bar. In this way, the bottom slots of N steel mesh interception units are arranged along one side of the construction joint on the wooden formwork of the building structure floor slab to form the bottom slots of the steel mesh interception tool. Step 3.2: Insert the lower ends of multiple connecting rods into the inner and outer lower connecting rod slots of the fixed bottom card slot, and insert the upper ends of multiple connecting rods into the outer and inner upper connecting rod slots of the top card slot symmetrically positioned in the bottom card slot to fix the top card slot. Corresponding to each fixed bottom card slot, insert the lower ends of multiple connecting rods into the inner and outer lower connecting rod slots, and insert the upper ends of multiple connecting rods into the upper outer and inner connecting rod slots of the top card slot corresponding to each fixed bottom card slot to fix multiple top card slots. The adjacent top card slots are connected end to end with snap fasteners to form the top card slot of the steel mesh interception tool. Step 3.3: Lay the top of the steel mesh in the upper through groove of the top clamping groove, and evenly spaced insert multiple wedges into the upper through groove of the top clamping groove to fix the top of the steel mesh in the upper through groove of the top clamping groove. Lay the bottom of the steel mesh in the lower through groove of the bottom clamping groove, tighten the steel mesh, and evenly spaced insert multiple wedges into the lower through groove of the bottom clamping groove to fix the bottom of the steel mesh in the lower through groove of the bottom clamping groove. This completes the installation of the steel mesh interception tool.