A basement engineering roof anti-cracking structure and a construction method thereof

Abstract

This invention discloses a crack-prevention structure for basement roof slabs and its construction method, relating to the field of basement construction technology. It includes a template and a mounting base. A vertically arranged threaded column is fixed on the mounting base. A pair of traction components are installed on the adjusting sleeve. Each traction component has a frame plate installed on it, which is snapped onto the edge of the template. A snap-fit ​​plate is snapped onto the template, and a locking component for clamping the template is installed on the bottom support plate. The construction of the crack-prevention structure for basement roof slabs includes the following steps: Step 1: Install and fix the mounting base, then adjust the height of the lifting column to adjust the height of the bottom support plate. This invention uses the frame plate and snap-fit ​​plate to clamp the edge of the template, providing excellent edge protection during template installation and effectively preventing edge deformation during construction, thus achieving crack prevention in basement roof slab construction.

Description

Technical Field

[0001] This invention relates to the field of basement construction technology, specifically to a crack-prevention structure for the roof slab of a basement project and its construction method. Background Technology

[0002] A basement is an underground space where the ground level is lower than the outdoor ground level. It is divided into full basements and semi-basements, and often serves as a garage, civil defense facility, or equipment room. It is a key structure for improving the efficiency of building land use. Its core structure includes a roof slab, floor slab, and side walls, along with supporting systems for waterproofing, anti-buoyancy, ventilation, and fire protection. The waterproofing level is usually Class I, requiring no water seepage and no dampness. Construction follows a standardized process: first, geological surveys and specialized feasibility studies are conducted; then, dewatering, foundation pit support and excavation are carried out; a foundation layer is poured and waterproofing and protective layers are applied; subsequently, the main structure is constructed; and finally, backfilling, electromechanical installation, and final acceptance are completed.

[0003] When constructing a basement roof slab, formwork is needed to support the bottom of the slab to ensure the reliability of subsequent construction. However, current formwork structures are prone to deformation due to the inability to effectively cover the edges, leading to cracking defects after the basement roof slab is constructed. Furthermore, the stability and flexibility of the formwork support are poor, making it difficult to guarantee the construction quality and efficiency of the basement roof slab. To address these technical shortcomings of existing technologies, this paper presents a crack-resistant structure for basement roof slabs and its construction method to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a crack-resistant structure for the roof slab of a basement project and its construction method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A crack-prevention structure for the roof slab of a basement project includes a template and a mounting base. A vertically arranged threaded column is fixed on the mounting base. A lifting column is slidably sleeved on the threaded column. An adjusting sleeve is threadedly sleeved on the lifting column. A pair of traction components are installed on the adjusting sleeve. Each traction component is equipped with a frame plate, which is snapped onto the edge of the template. A snap-fit ​​plate is snapped onto the template, perpendicular to the frame plate. A snap-fit ​​component is installed on the top of the lifting column, and an extension tube is connected to the snap-fit ​​component. A bottom support plate is fixed to the top of the extension tube. A locking component for clamping the template is installed on the bottom support plate. Several lifting rods are fixed on the frame plate, and internally threaded connecting cylinders are installed at the upper ends of the lifting rods.

[0006] As an improvement of the present invention: the traction assembly includes a connecting collar rotatably mounted on the adjusting sleeve, a traction rod rotatably mounted on the side wall of the connecting collar, a traction frame hinged to the upper end of the traction rod, and a frame plate rotatably mounted on the end of the traction frame away from the traction rod.

[0007] As an improvement of the present invention: a connecting plate is installed at the bottom of the frame plate by locking screws, an extension block is fixed at the bottom of the connecting plate, the traction frame is rotatably installed on the extension block, and a torsion spring II is fixed between the extension block and the traction frame.

[0008] As an improvement of the present invention: the locking assembly includes a docking short section located above the template, the docking short section is locked and fixed to the bottom support plate by bolts and nuts, the docking short section is provided with a positioning groove, and a positioning block fixed on the bottom support plate is embedded in the positioning groove.

[0009] As an improvement of the present invention: the snap-fit ​​assembly includes a support plate fixedly installed on the upper end of the lifting column, a support frame fixed on the support plate, a snap-fit ​​claw rotatably installed on the support frame, a wedge surface opened on the snap-fit ​​claw, and a docking plate adapted to snap-fit ​​the snap-fit ​​claw fixed on the extension short tube.

[0010] As an improvement of the present invention: a reset turntable is threaded onto the support plate, a torsion spring I is fixed between the pawl and the support frame, a reset extension block vertically corresponding to the reset turntable is fixed on the pawl, and a push spring is fixed at the end of the lifting column, the push spring abutting against the lower end of the extension short tube.

[0011] As an improvement of the present invention: an adjusting threaded pipe is rotatably installed on the lifting column via a bearing connection, the adjusting threaded pipe is threadedly sleeved on the threaded column, and a guide slide is fixed on the lifting column, the guide slide being slidably embedded inside the threaded column.

[0012] Construction of a crack-resistant structure for the roof slab of a basement project includes the following steps: Step 1: Install and fix the rotating base, then adjust the height of the lifting column to adjust the height of the base plate; Step 2: Place the template on the base plate, place the short section on the template, and connect the short section and the base plate with bolts and nuts to make the template stably clamped and fixed between the short section and the base plate. Step 3: Attach the frame plate and the snap-fit ​​plate to the edge of the template respectively, and adjust the height of the connecting collar so that the traction rod pulls the traction frame and the frame plate effectively clamps the template. Step 4: Connect the internally threaded cylinder to the pre-embedded screw, and fix the connecting short section to the pre-embedded part to achieve the suspended installation of the template.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention uses a frame plate and a snap-fit ​​plate to clamp the edges of the template, providing excellent edge protection during template installation and effectively preventing edge deformation during construction. This achieves crack prevention in basement roof slab construction. The installation of connecting short sections and a bottom support plate clamps and locks the template, ensuring its stable position and significantly improving the construction quality of the basement roof slab, effectively reducing the risk of cracking.

[0014] 2. This invention uses a snap-fit ​​assembly to snap the connecting plate together, ensuring a stable connection between the support plate and the extension tube, thus providing effective support for the bottom support plate. After the template construction is completed, rotating the reset turntable pushes against the reset extension block, which in turn moves the claws away from the connecting plate to unlock the extension tube. This greatly facilitates the installation and disassembly of the device, making it more convenient and efficient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A structural diagram from a certain perspective; Figure 3 This is a schematic diagram of the locking assembly of the present invention; Figure 4 This is a partial structural diagram of the present invention; Figure 5 For the present invention Figure 4 Exploded view of a partial structure; Figure 6 For the present invention Figure 5 Enlarged diagram of section A in the middle; Figure 7 This is a schematic diagram showing the connection of components such as the lifting column, adjusting threaded pipe, and threaded column in this invention. Figure 8 This is a schematic diagram of the frame plate, traction frame, and traction rod in this invention; Figure 9 For the present invention Figure 8 Enlarged schematic diagram of section B.

[0016] In the diagram: 1-Template, 2-Frame plate, 3-Snap-fit ​​plate, 4-Matching short section, 5-Hanging rod, 6-Swivel seat, 7-Threaded column, 8-Adjusting threaded pipe, 9-Connecting collar, 10-Traction rod, 11-Bottom support plate, 12-Traction frame, 13-Adjusting sleeve, 14-Internal threaded mating cylinder, 15-Support plate, 16-Lifting column, 17-Claw, 18-Support frame, 19-Wedge surface, 20-Push spring, 21-Extension short pipe, 22-Torsion spring I, 23-Reset turntable, 24-Guide slide column, 25-Connecting support plate, 26-Extension block, 27-Torsion spring II, 28-Locking screw, 29-Matching plate, 30-Reset extension block, 31-Positioning block, 32-Positioning groove. Detailed Implementation

[0017] The technical solution of the present invention will be further described in detail below with reference to specific embodiments: First embodiment: Please refer to Figures 1-9 A crack-prevention structure for the roof slab of a basement project includes a template 1 and a mounting base 6. A vertically arranged threaded column 7 is fixed on the mounting base 6. A lifting column 16 is slidably sleeved on the threaded column 7. An adjusting sleeve 13 is threadedly sleeved on the lifting column 16. A pair of traction components are installed on the adjusting sleeve 13. A frame plate 2 is installed on each traction component. The frame plate 2 is snapped onto the edge of the template 1. A snap-fit ​​plate 3 is snapped onto the template 1. The snap-fit ​​plate 3 is perpendicular to the frame plate 2. A snap-fit ​​component is installed on the top of the lifting column 16. An extension short pipe 21 is connected to the snap-fit ​​component. A bottom support plate 11 is fixed on the top of the extension short pipe 21. A locking component for clamping the template 1 is installed on the bottom support plate 11. Several hanging rods 5 are fixed on the frame plate 2. An internally threaded connecting cylinder 14 is installed on the upper end of the hanging rod 5.

[0018] Construction of a crack-resistant structure for the roof slab of a basement project includes the following steps: Step 1: Install and fix the rotating base 6, and then adjust the height of the lifting column 16 so that the height of the base plate 11 can be adjusted; Step 2: Place template 1 on base plate 11, place the connecting section 4 on template 1, and connect the connecting section 4 and base plate 11 with bolts and nuts so that template 1 is stably clamped and fixed between connecting section 4 and base plate 11. Step 3: Attach the frame plate 2 and the snap-fit ​​plate 3 to the edge of the template 1 respectively, adjust the height of the connecting collar 9 so that the traction rod 10 pulls the traction frame 12 so that the frame plate 2 effectively clamps the template 1. Step 4: Connect the internally threaded cylinder 14 to the pre-embedded screw, and fix the connecting short section 4 to the pre-embedded part to achieve the suspension installation of the template 1.

[0019] When this structure is used for construction of the basement roof slab, the mounting base 6 is fixed, the height of the lifting column 16 is adjusted so that the bottom support plate 11 can be moved to a suitable construction height, the template 1 is placed on the support plate 11 and installed and fixed by the locking assembly, and the edges of the template 1 are locked by the set frame plate 2 and the snap-fit ​​plate 3, which effectively protects the edges of the template 1 and ensures the stability of the installation position of the template 1.

[0020] Specifically, the traction assembly includes a connecting collar 9 rotatably mounted on an adjusting sleeve 13. A traction rod 10 is rotatably mounted on the side wall of the connecting collar 9. A traction frame 12 is hinged to the upper end of the traction rod 10. A side frame plate 2 is rotatably mounted on the end of the traction frame 12 away from the traction rod 10. A connecting support plate 25 is mounted on the bottom of the side frame plate 2 via locking screws 28. An extension block 26 is fixed to the bottom of the connecting support plate 25. The traction frame 12 is rotatably mounted on the extension block 26. A torsion spring II 27 is fixed between the extension block 26 and the traction frame 12.

[0021] The adjusting sleeve 13 rotates relative to the lifting column 16, allowing the adjusting sleeve 13 to drive the connecting collar 9 to move vertically. The connecting collar 9 is pulled by the traction rod 10 to the traction frame 12. At this time, the connecting support plate 25 drives the side plate 2 to move towards the template 1. The two side plates 2 effectively clamp and position the template 1, effectively ensuring the stability of the template 1 installation, greatly reducing the probability of template 1 deformation, and playing a good anti-cracking effect.

[0022] In addition, the locking assembly includes a connecting section 4 located above the template 1. The connecting section 4 is locked and fixed to the base plate 11 by bolts and nuts. The connecting section 4 has a positioning groove 32, and a positioning block 31 fixed on the base plate 11 is embedded in the positioning groove 32. The template 1 is installed between the base plate 11 and the connecting section 4. The positioning block 31 and the positioning groove 32 engage and correspond, ensuring that the connecting section 4 is fixed to the base plate 11 to achieve locking and clamping of the template 1, thereby improving the stability of the template 1 installation.

[0023] Second embodiment: Please refer to Figures 1-9 Based on the first embodiment, the snap-fit ​​assembly includes a support plate 15 fixedly installed on the upper end of the lifting column 16, a support frame 18 fixed on the support plate 15, a snap-fit ​​claw 17 rotatably installed on the support frame 18, a wedge surface 19 opened on the snap-fit ​​claw 17, and a docking plate 29 that is adapted to snap-fit ​​the snap-fit ​​claw 17 fixed on the extension short tube 21.

[0024] Among them, a reset turntable 23 is threaded onto the support plate 15, a torsion spring 122 is fixed between the pawl 17 and the support frame 18, a reset extension block 30 vertically corresponding to the reset turntable 23 is fixed on the pawl 17, and a push spring 20 is fixed at the end of the lifting column 16, and the push spring 20 abuts against the lower end of the extension short tube 21.

[0025] With the above structural setup, the claw 17 is engaged with the docking plate 29. Under the torsional force of the torsion spring I22, the claw 17 and the docking plate 29 are stably connected. After the template 1 is positioned and installed, the reset turntable 23 is rotated to move vertically relative to the support plate 15. The reset turntable 23 pushes against the reset extension block 30, and the reset extension block 30 drives the claw 17 away from the docking plate 29, thus achieving the unlocking effect of the extension short tube 21. By removing the locking screw 28, the connecting plate 25 can be separated from the frame plate 2. This allows the traction frame 12, traction rod 10, connecting collar 9, lifting column 16, and threaded column 7 to be separated from the template 1 after the template 1 is installed and positioned. The installation and disassembly operations are simple and convenient, and the template can be reused multiple times.

[0026] In addition, an adjusting threaded tube 8 is rotatably mounted on the lifting column 16 via a bearing connection. The adjusting threaded tube 8 is threadedly sleeved on the threaded column 7. A guide slide 24 is fixed on the lifting column 16 and is slidably embedded inside the threaded column 7. By turning the adjusting threaded tube 8 to move vertically relative to the threaded column 7, the adjusting threaded tube 8 can drive the lifting column 16 to move vertically, making the height adjustment operation of the base plate 11 simple and quick.

[0027] In summary, this invention uses the frame plate 2 and the snap-fit ​​plate 3 to clamp the edge of the template 1, providing excellent edge protection during template 1 installation and effectively preventing edge deformation during construction. This achieves anti-cracking effects in basement roof slab construction. The connecting short section 4 and the bottom support plate 11 clamp and lock the template 1, ensuring its stable position and significantly improving the construction quality of the basement roof slab, effectively reducing the risk of cracking. The snap-fit ​​assembly uses the connecting plate 29 to securely connect the support plate 15 and the extension short pipe 21, effectively supporting the bottom support plate 11. After template 1 construction is completed, rotating the reset turntable 23 pushes against the reset extension block 30, causing the claw 17 to move away from the connecting plate 29, unlocking the extension short pipe 21. This greatly facilitates the installation and disassembly of the device, making it more convenient and efficient to use.

Claims

1. A basement engineering roof anti-cracking structure, comprising a formwork (1) and a mounting seat (6), a vertical threaded column (7) is fixed on the mounting seat (6), and a lifting column (16) is sleeved on the threaded column (7) in a sliding mode, characterized in that, The lifting column (16) is threaded with an adjusting sleeve (13), and a pair of traction components are installed on the adjusting sleeve (13). Each traction component is equipped with a side plate (2), which is snapped onto the edge of the template (1). A snap-fit ​​plate (3) is snapped onto the template (1), and the snap-fit ​​plate (3) is perpendicular to the side plate (2). A snap-fit ​​component is installed on the top of the lifting column (16), and an extension short pipe (21) is connected to the snap-fit ​​component. A bottom support plate (11) is fixed on the top of the extension short pipe (21), and a locking component for clamping the template (1) is installed on the bottom support plate (11). Several lifting rods (5) are fixed on the side plate (2), and an internally threaded docking cylinder (14) is installed on the upper end of the lifting rod (5).

2. The basement work roof anti-cracking structure according to claim 1, characterized in that, The traction assembly includes a connecting collar (9) rotatably mounted on the adjusting sleeve (13), a traction rod (10) rotatably mounted on the side wall of the connecting collar (9), a traction frame (12) hinged to the upper end of the traction rod (10), and a frame plate (2) rotatably mounted on the end of the traction frame (12) away from the traction rod (10).

3. The basement work roof anti-cracking structure according to claim 2, characterized in that, The bottom of the frame plate (2) is fitted with a connecting plate (25) by a locking screw (28). An extension block (26) is fixed to the bottom of the connecting plate (25). The traction frame (12) is rotatably mounted on the extension block (26). A torsion spring II (27) is fixed between the extension block (26) and the traction frame (12).

4. The basement work roof anti-cracking structure according to claim 1, characterized in that, The locking assembly includes a docking section (4) located above the template (1). The docking section (4) is locked and fixed to the base plate (11) by bolts and nuts. The docking section (4) has a positioning groove (32) and a positioning block (31) fixed on the base plate (11) is embedded in the positioning groove (32).

5. The basement construction roof anti-cracking structure according to claim 1, characterized in that, The snap-fit ​​assembly includes a support plate (15) fixedly installed on the upper end of the lifting column (16), a support frame (18) fixed on the support plate (15), a snap-fit ​​claw (17) rotatably installed on the support frame (18), a wedge surface (19) is provided on the snap-fit ​​claw (17), and a docking plate (29) that is compatible with the snap-fit ​​claw (17) is fixed on the extension short tube (21).

6. The basement work roof anti-cracking structure according to claim 5, characterized in that, A reset turntable (23) is threaded onto the support plate (15). A torsion spring I (22) is fixed between the pawl (17) and the support frame (18). A reset extension block (30) vertically corresponding to the reset turntable (23) is fixed on the pawl (17). A push spring (20) is fixed at the end of the lifting column (16). The push spring (20) abuts against the lower end of the extension tube (21).

7. The basement construction roof anti-cracking structure according to claim 1, characterized in that, An adjusting threaded tube (8) is rotatably mounted on the lifting column (16) via a bearing connection. The adjusting threaded tube (8) is threaded onto the threaded column (7). A guide slide (24) is fixed on the lifting column (16) and is slidably embedded inside the threaded column (7).

8. A method of constructing a basement engineering roof crack prevention structure according to claim 1, characterized by, Includes the following steps: Step 1: Install and fix the rotating base (6), and then adjust the height of the lifting column (16) so that the height of the base plate (11) can be adjusted; Step 2: Place the template (1) on the base plate (11), place the connecting short section (4) on the template (1), and connect the connecting short section (4) and the base plate (11) with bolts and nuts so that the template (1) is stably clamped and fixed between the connecting short section (4) and the base plate (11). Step 3: Attach the frame plate (2) and the snap-fit ​​plate (3) to the edge of the template (1) respectively, adjust the height of the connecting collar (9) so that the traction rod (10) pulls the traction frame (12) so that the frame plate (2) can effectively clamp the template (1); Step 4: Connect the internal threaded cylinder (14) to the pre-embedded screw, and fix the connecting short section (4) to the pre-embedded part to achieve the suspension installation of the template (1).

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