Foundation pit supporting structure with tunnel on side wall of foundation pit

Abstract

The invention provides a foundation pit supporting structure with a tunnel on the side wall of a foundation pit, the top construction ground of the foundation pit is fixedly connected with a fixing plate, the middle part of one end, extending into the foundation pit, of the fixing plate is provided with a traction groove penetrating through the end part, the inner walls of the two sides of the traction groove are both provided with V-shaped limiting blocks, and the middle part of one end, far away from the foundation pit, of the fixing plate is rotatably connected with a threaded rod I; a threaded hole is formed in the middle of the end, close to the first threaded rod, of the traction plate. Compared with the prior art, earthwork over a tunnel on the side wall of the foundation pit can be supported in a targeted mode, the earthwork over the tunnel is better prevented from collapsing, meanwhile, the fixing plate is fixed to the construction ground at the top of the foundation pit, and when workers conduct construction on the tunnel, the safety of the workers is improved. The foundation pit supporting structure with the tunnel on the side wall of the foundation pit cannot affect construction of the tunnel, the soil texture of the construction ground at the top of the foundation pit is usually hard, and the fixing plate is fixed to the construction ground at the top of the foundation pit and is not prone to loosening.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit infrastructure security and maintenance, and in particular to a foundation pit support structure with a tunnel on a side wall of the foundation pit. Background Art

[0002] Foundation pit support is a measure of support, reinforcement and protection adopted for the side walls of the foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit; And according to actual needs, corresponding tunnel structures will be opened in some foundation pits. However, the soil directly above the existing foundation pit with a tunnel on the side wall is prone to collapse. When supporting with the existing support structure, the support point of the support mechanism is fixed inside the foundation pit, and the support formwork is supported by inclined support rods. On the one hand, due to the general accumulation of water in the foundation pit, the soil at the bottom of the foundation pit is relatively soft, which can easily loosen the support mechanism. On the other hand, the support mechanism is supported inside the foundation pit, which occupies a large amount of standing space for construction workers, seriously affecting the construction. Therefore, a foundation pit support structure with a tunnel on the side wall of the foundation pit is proposed. Summary of the invention

[0003] In order to solve at least one of the above technical shortcomings, the present invention provides a foundation pit support structure with a tunnel on the side wall of the foundation pit, comprising: a supporting formwork, a fixing plate fixedly connected to the construction ground at the top of the foundation pit, a traction groove penetrating the end is opened in the middle of one end of the fixing plate extending into the foundation pit, V-shaped limit blocks are arranged on the inner walls of both sides of the traction groove, a threaded rod is rotatably connected in the middle of one end of the fixing plate away from the foundation pit, a traction plate is slidably connected inside the traction groove, a threaded hole is arranged in the middle of one end of the traction plate close to the threaded rod, the threaded hole is threadedly connected to the threaded rod, and an end of the traction plate extending into the foundation pit is opened. There is a square hole pointing vertically downward, a horizontal plate is fixedly connected in the middle of the square hole, V-shaped limit grooves matching the V-shaped limit blocks are provided on both sides of the traction plate, a vertically arranged load-bearing U-shaped beam is inserted inside the square hole, a number of supporting templates are evenly clamped and fixed between the load-bearing U-shaped beam and the side wall of the foundation pit, a number of reinforcing ribs are integrally connected to the surface of one side of the supporting template close to the side wall of the foundation pit, the reinforcing ribs are arranged in an isosceles triangle structure and are vertically arranged, the sharp angle of the reinforcing ribs is greater than or equal to 45° and less than or equal to 60°, and a trapezoidal groove with an isosceles trapezoidal structure is formed between adjacent reinforcing ribs.

[0004] Furthermore, a slide groove running through both ends is provided on the upper surface of the traction plate, and an auxiliary reinforcement mechanism is provided on the internal sliding connection of the slide groove. The auxiliary reinforcement mechanism includes a moving plate slidably connected to the inside of the slide groove, and triangular limit blocks are provided on both sides of the moving plate for sliding connection with the grooves on both sides of the slide groove. The auxiliary reinforcement mechanism also includes a fixed square plate fixedly connected to the upper surface of the fixed plate, and a threaded rod four is rotatably connected to the middle part of the fixed square plate. A threaded hole is provided at the end of the moving plate, and one end of the threaded rod four close to the foundation pit is threadedly connected to the threaded hole at the end of the moving plate, and the end of the moving plate extending into the foundation pit is integrally connected with an arc plate in the shape of a quarter circle.

[0005] Furthermore, a square block is arranged at the bottom end of the arc-shaped plate, and a plurality of square grooves inlaid with the square block are evenly arranged on the surface of one side of the load-bearing U-shaped beam close to the square block.

[0006] Furthermore, a plurality of reinforcing ribs are provided on the inner side of the arc-shaped plate and fixedly connected to the moving plate.

[0007] Furthermore, a cross beam is provided at the bottom end of the stressed U-shaped beam, one end of the cross beam is rotatably connected with a threaded rod five and fixedly connected with a limit rod, the threaded rod five is arranged parallel to the limit rod, the top end of the threaded rod five is threadedly connected to the bottom end of the stressed U-shaped beam, the limit rod is socketed with the hole at the bottom end of the stressed U-shaped beam, and a supporting template is provided between the upper surface of the cross beam and the top wall of the tunnel.

[0008] Furthermore, a rubber gasket fixed to the lower surface of the fixed plate is provided at the edge of the foundation pit, and the rubber gasket bypasses the top of the supporting formwork and is located between the supporting formwork and the load-bearing U-shaped beam.

[0009] Furthermore, four insertion rods are evenly arranged on the lower surface of one end of the fixing plate away from the foundation pit, an insertion plate fixed to the lower surface of the fixing plate is arranged between the four insertion rods, and the insertion rods and the insertion plate are plugged into the interior of the fixing seat.

[0010] Furthermore, the fixing seat includes a concrete body cast on the construction ground at the top of the foundation pit, the top of the concrete body is provided with a sleeve tube corresponding to the insertion rod, the top of the concrete body is provided with a sleeve groove corresponding to the insertion plate, and the direction of the sleeve groove is parallel to the side wall of the foundation pit.

[0011] Furthermore, through holes are opened in the middle of both sides of the fixing plate, screws are arranged inside the through holes, the top ends of the through holes are sunken, and a fixing plug plate fixed to the construction ground at the top of the foundation pit is arranged directly below the through holes. Two threaded tubes corresponding to the screws are integrally connected to the fixing plug plate, and the bottom ends of the fixing plug plate and the threaded tube are both conically arranged, and the direction of the fixing plug plate is parallel to the side wall of the foundation pit.

[0012] Furthermore, a square groove five is provided at one end of the cross beam close to the arc plate and is inlaid with the square block. A sliding groove running through both ends is provided on the lower surface of the moving plate. The lower surface of the moving plate is slidably connected to at least one layer of auxiliary reinforcement mechanism through the sliding groove. The rotating ends of the threaded rod one, the screw rod, the threaded rod four and the threaded rod five are all integrally connected with a regular hexagonal nut. Beneficial Effects

[0013] When supporting the earthwork directly above the tunnel on the side wall of the foundation pit, the fixing plate is fixed on the construction ground at the top of the foundation pit, and the traction groove end of the fixing plate is brought close to the edge of the foundation pit. The threaded rod 1 is rotated to make the threaded rod 1 engage with the threaded hole at one end of the traction plate, and the traction plate is pulled away from the foundation pit by the threaded rod 1. Under the traction of the traction plate, the stressed U-shaped beam pushes several supporting templates close to the side wall of the foundation pit, and the earthwork directly above the tunnel on the side wall of the foundation pit is supported by the supporting templates; By setting up reinforcement ribs, the structural strength of the supporting formwork is improved. When supporting, the surface of the supporting formwork close to the side wall of the pit is supported on the side wall of the pit, so that the reinforcement ribs will be inserted into the side wall of the pit. At the same time, when the supporting formwork completes the support, the side wall of the pit will form reinforcement ribs that fill the entire trapezoidal groove. In subsequent construction, even if the pit supporting structure with a tunnel on the side wall of the pit is removed, a number of vertical side wall reinforcement ribs will be left on the side wall of the pit, making the side wall of the pit less likely to collapse and achieving a better support effect.

[0014] When reinforcing the foundation pit support structure with a tunnel on the side wall of the foundation pit, the threaded rod four is screwed to make the threaded rod four be threadedly connected with the threaded hole at the end of the moving plate, so that the threaded rod four pulls the moving plate to move, so that the moving plate pulls the curved plate to move toward the side close to the stressed U-shaped beam, so that the bottom end of the curved plate is supported on the stressed U-shaped beam, and a reinforcing force is applied to the stressed U-shaped beam; When reinforcing, the square block is embedded into the inside of the square groove 3, so that the reinforced structure formed by the arc plate and the load-bearing U-shaped beam is less likely to be destroyed; When waterproofing, the rubber gasket is pressed against the edge of the foundation pit through the fixing plate. At the same time, the rubber gasket bypasses the top of the supporting formwork and is located between the supporting formwork and the stressed U-shaped beam. When rainwater flows from the construction ground at the top of the foundation pit to the foundation pit, the rubber gasket can be set so that the rainwater can be separated from the side wall of the foundation pit through the rubber gasket, which can prevent the side wall of the foundation pit from being washed by rainwater and can better play a supporting role. When installing the fixing plate, insert the insertion plate into the sleeve groove, insert the insertion rod into the sleeve tube, and fix the fixing plate through the fixing seat. When reinforcing, the fixing seat provides a force support point. The setting of the fixing seat makes the fixing plate easy to install and disassemble.

[0015] Compared with the prior art, the present invention can specifically support the earthwork directly above the tunnel on the side wall of the foundation pit, and better prevent the collapse of the earthwork directly above the tunnel. At the same time, the fixed plate is fixed on the construction ground at the top of the foundation pit. When workers are constructing the tunnel, the foundation pit support structure with the tunnel on the side wall of the foundation pit will not affect the construction of the tunnel. The soil on the construction ground at the top of the foundation pit is usually hard, and the fixed plate is fixed on the construction ground at the top of the foundation pit, which is less likely to loosen.

[0016] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an axonometric view of the present invention as a whole.

[0018] Figure 2 It is a cross-sectional view of the whole of the present invention.

[0019] Figure 3 It is an axonometric view of the traction groove of the present invention.

[0020] Figure 4 It is an axonometric view of the traction plate of the present invention.

[0021] Figure 5 It is an axonometric view of the load-bearing U-shaped beam of the present invention.

[0022] Figure 6 Axonometric view of the auxiliary reinforcement mechanism of the present invention Figure 1 .

[0023] Figure 7 Axonometric view of the auxiliary reinforcement mechanism of the present invention Figure 2 .

[0024] Figure 8 It is an axonometric view of the fixed square plate of the present invention.

[0025] Fig. 9 It is an axonometric view of the crossbeam of the present invention.

[0026] Fig.10 It is an axonometric view of the fixing seat of the present invention.

[0027] Fig.11 It is an axonometric view of the fixed plugboard of the present invention.

[0028] Fig.12 It is an axonometric view of the support formwork of the present invention.

[0029] exist Figures 1 to 12, the corresponding relationship between the component names or lines and the figure numbers is: fixed plate 1, traction groove 101, V-shaped limit block 102, through hole 103, threaded rod one 104, nut 105, insertion rod 106, insertion plate 107, traction plate 2, square hole 201, V-shaped limit groove 202, cross plate 203, slide groove 204, force-bearing U-shaped beam 3, square groove three 301, auxiliary reinforcement mechanism 4, fixed square plate 401, moving plate 402, triangular limit block 403, arc plate 404, square block 405, reinforcement rib 406, threaded rod four 407, cross beam 5, limit rod 501, threaded rod five 502, square groove five 503, fixed seat 6, concrete body 601, sleeve pipe 602, sleeve groove 603, fixed plug plate 7, threaded pipe 701, support formwork 8, reinforcement rib 801, trapezoidal groove 802, rubber gasket 9. DETAILED DESCRIPTION

[0030] Please refer to Figures 1 to 12 ; This embodiment provides a foundation pit support structure with a tunnel on the side wall of the foundation pit, referring to Figure 1 , including: a supporting formwork 8, a fixed plate 1 is fixedly connected to the construction ground at the top of the foundation pit, a traction groove 101 penetrating the end is opened in the middle of one end of the fixed plate 1 extending into the foundation pit, and V-shaped limit blocks 102 are provided on both sides of the inner wall of the traction groove 101, a threaded rod 104 is rotatably connected in the middle of the end of the fixed plate 1 away from the foundation pit, a traction plate 2 is slidably connected inside the traction groove 101, a threaded hole is provided in the middle of one end of the traction plate 2 close to the threaded rod 104, and the threaded hole is threadedly connected to the threaded rod 104, and a square hole 201 is vertically downward from the end of the traction plate 2 extending into the foundation pit, and the middle of the square hole 201 A horizontal plate 203 is fixedly connected, and both sides of the traction plate 2 are provided with V-shaped limit grooves 202 that fit with the V-shaped limit blocks 102. A vertically arranged force-bearing U-shaped beam 3 is inserted inside the square hole 201. A plurality of support templates 8 are evenly clamped and fixed between the force-bearing U-shaped beam 3 and the side wall of the foundation pit. A plurality of reinforcing ribs 801 are integrally connected to the surface of the side of the support template 8 close to the side wall of the foundation pit. The reinforcing ribs 801 are arranged in an isosceles triangle structure and are arranged vertically. The sharp angle of the reinforcing ribs 801 is greater than or equal to 45° and less than or equal to 60°. Trapezoidal grooves 802 with an isosceles trapezoidal structure are formed between adjacent reinforcing ribs 801. In specific implementation, when supporting the earthwork directly above the tunnel on the side wall of the foundation pit, the fixed plate 1 is fixed on the construction ground at the top of the foundation pit, and the traction groove 101 end of the fixed plate 1 is close to the edge of the foundation pit. By rotating the threaded rod 104, the threaded rod 104 is engaged with the threaded hole at one end of the traction plate 2, and the traction plate 2 is pulled away from the foundation pit by the threaded rod 104. Under the traction action of the traction plate 2, the stressed U-shaped beam 3 pushes a number of support templates 8 close to the side wall of the foundation pit, and the earthwork directly above the tunnel on the side wall of the foundation pit is supported by the support templates 8.

[0031] Among them, by setting the reinforcing ribs 801, the structural strength of the supporting formwork 8 is improved, so that the supporting formwork 8 is less likely to deform during support. When supporting, the surface of the side of the supporting formwork 8 close to the side wall of the foundation pit is supported on the side wall of the foundation pit, so that the reinforcing ribs 801 will be inserted into the side wall of the foundation pit. At the same time, when the supporting formwork 8 completes the support, the side wall of the foundation pit will form a foundation pit side wall reinforcement rib that fills the entire trapezoidal groove 802. In the subsequent construction, even if the foundation pit support structure with a tunnel on the side wall of the foundation pit is removed, a number of vertical foundation pit side wall reinforcement ribs will be left on the side wall of the foundation pit, so that the side wall of the foundation pit is less likely to collapse, and a better support effect is achieved; The sharp angle of the reinforcing rib 801 is greater than or equal to 45° and less than or equal to 60°, so that the reinforcing rib 801 can be easily inserted into the side wall of the foundation pit; When the stressed U-shaped beam 3 is installed, the open end of the stressed U-shaped beam 3 is inserted from the top of the square hole 201, so that the cross plate 203 is stuck inside the stressed U-shaped beam 3, and the installation of the stressed U-shaped beam 3 is completed; Advantages: the soil above the tunnel on the side wall of the foundation pit can be supported in a targeted manner, and the collapse of the soil above the tunnel can be better prevented. At the same time, the fixed plate 1 is fixed on the construction ground at the top of the foundation pit. When workers are constructing the tunnel, the foundation pit support structure with the tunnel on the side wall of the foundation pit will not affect the construction of the tunnel. The soil on the construction ground at the top of the foundation pit is usually hard, and the fixed plate 1 is fixed on the construction ground at the top of the foundation pit, which is less likely to loosen. And support can be carried out without damaging the earthwork directly above the tunnel.

[0032] For further reference, Figure 3 and Figure 4 The upper surface of the traction plate 2 is provided with a slide groove 204 running through both ends, and the internal sliding connection of the slide groove 204 is provided with an auxiliary reinforcement mechanism 4, the auxiliary reinforcement mechanism 4 includes a moving plate 402 slidably connected to the inside of the slide groove 204, and both sides of the moving plate 402 are provided with triangular limit blocks 403 slidably connected to the grooves on both sides of the slide groove 204, the auxiliary reinforcement mechanism 4 also includes a fixed square plate 401 fixedly connected to the upper surface of the fixed plate 1, and the middle part of the fixed square plate 401 is rotatably connected with a threaded rod four 407, and the end of the moving plate 402 is provided with a threaded hole, and the end of the threaded rod four 407 close to the foundation pit is threadedly connected to the threaded hole at the end of the moving plate 402, and the end of the moving plate 402 extending into the foundation pit is integrally connected with a quarter-circular ring-shaped arc plate 404; During the specific implementation, when reinforcing the foundation pit support structure with a tunnel on the side wall of the foundation pit, the threaded rod four 407 is screwed to make the threaded rod four 407 threadedly connected to the threaded hole at the end of the moving plate 402, so that the threaded rod four 407 pulls the moving plate 402 to move, and the moving plate 402 pulls the arc plate 404 to move toward the side close to the stressed U-shaped beam 3, so that the bottom end of the arc plate 404 is supported on the stressed U-shaped beam 3, and a reinforcing force is applied to the stressed U-shaped beam 3.

[0033] For further reference, Figure 4 and Figure 5 A square block 405 is provided at the bottom end of the arc-shaped plate 404, and a plurality of square grooves 301 inlaid with the square block 405 are evenly opened on the surface of one side of the force-bearing U-shaped beam 3 close to the square block 405; In a specific implementation, when performing reinforcement, the square block 405 is embedded into the inside of the square groove 301, so that the reinforcement structure formed by the arc plate 404 and the stressed U-shaped beam 3 is less likely to be destroyed.

[0034] For further reference, Figure 6 and Figure 7 ,, a plurality of reinforcing ribs 406 are provided on the inner side of the arc-shaped plate 404 and are fixedly connected to the moving plate 402; In a specific implementation, by providing a plurality of reinforcing ribs 406 , the arc-shaped plate 404 can withstand a greater tensile force without being deformed.

[0035] For further reference, Fig. 9 A crossbeam 5 is provided at the bottom end of the stressed U-shaped beam 3, one end of the crossbeam 5 is rotatably connected with a threaded rod 502 and fixedly connected with a limit rod 501, the threaded rod 502 is arranged parallel to the limit rod 501, the top of the threaded rod 502 is threadedly connected to the bottom end of the stressed U-shaped beam 3, the limit rod 501 is sleeved with the hole at the bottom end of the stressed U-shaped beam 3, and a support template 8 is provided between the upper surface of the crossbeam 5 and the top wall of the tunnel; In the specific implementation, when supporting the top wall of the tunnel, the limit rod 501 is inserted into the hole at the bottom end of the stressed U-shaped beam 3, and the threaded rod 502 is screwed into the threaded hole at the bottom end of the stressed U-shaped beam 3, so that the crossbeam 5 moves upward, pushing the support template 8 located on the upper surface of the crossbeam 5 to move upward and support the top wall of the tunnel, thereby completing the support of the top of the tunnel; By setting the cross beam 5, when the construction workers are digging the tunnel, after completing a small section of excavation, by installing the cross beam 5 again, construction and support can be carried out simultaneously, thereby better supporting the top wall of the tunnel.

[0036] For further reference, Figure 2A rubber gasket 9 fixed to the lower surface of the fixed plate 1 is provided at the edge of the foundation pit, and the rubber gasket 9 bypasses the top of the supporting formwork 8 and is located between the supporting formwork 8 and the stressed U-shaped beam 3; In the specific implementation, when waterproofing is performed, the rubber gasket 9 is pressed against the edge of the foundation pit through the fixed plate 1, and at the same time, the rubber gasket 9 bypasses the top of the supporting formwork 8 and is located between the supporting formwork 8 and the load-bearing U-shaped beam 3. When rainwater flows from the construction ground at the top of the foundation pit to the foundation pit, the rubber gasket 9 is set so that the rainwater can be separated from the side wall of the foundation pit through the rubber gasket 9, which can prevent the side wall of the foundation pit from being washed away by rainwater and can better play a supporting role.

[0037] For further reference, Figure 4 Four insertion rods 106 are evenly arranged on the lower surface of the end of the fixing plate 1 away from the foundation pit, and an insertion plate 107 fixed to the lower surface of the fixing plate 1 is arranged between the four insertion rods 106, and the insertion rods 106 and the insertion plate 107 are plugged into the interior of the fixing seat 6; In the specific implementation, when fixing the fixing plate 1 on the construction ground at the top of the foundation pit, the fixing seat 6 is first cast on the construction ground at the top of the foundation pit. After the casting of the fixing seat 6 is completed, the insertion rod 106 and the insertion plate 107 are inserted to complete the fixation of the fixing plate 1.

[0038] For further reference, Fig.10 The fixing seat 6 includes a concrete body 601 cast on the construction ground at the top of the foundation pit, a sleeve tube 602 corresponding to the insertion rod 106 is provided at the top of the concrete body 601, and a sleeve groove 603 corresponding to the insertion plate 107 is provided at the top of the concrete body 601, and the sleeve groove 603 is parallel to the side wall of the foundation pit; In a specific implementation, when installing the fixed plate 1, the insertion plate 107 is inserted into the sleeve groove 603, the insertion rod 106 is inserted into the sleeve tube 602, and the fixed plate 1 is fixed by the fixed seat 6. When reinforcing, the fixed seat 6 provides a force support point. The setting of the fixed seat 6 makes the fixed plate 1 easy to install and disassemble.

[0039] For further reference, Figure 8 and Fig.11 A through hole 103 is provided in the middle of both sides of the fixing plate 1, a screw is provided inside the through hole 103, the top of the through hole 103 is sunken, and a fixing plug plate 7 fixed to the construction ground at the top of the foundation pit is provided directly below the through hole 103, and two threaded tubes 701 corresponding to the screw are integrally connected to the fixing plug plate 7, and the bottom ends of the fixing plug plate 7 and the threaded tube 701 are both conical, and the direction of the fixing plug plate 7 is parallel to the side wall of the foundation pit; In the specific implementation, when the fixing plate 1 is fixed for the second time, the screw is screwed into the inside of the through hole 103, and the screw is threadedly engaged with the threaded tube 701, and the fixing plate 1 and the fixing plug plate 7 are fixed together by the screw. The setting of the fixing plug plate 7, the threaded tube 701 and the screw prevents the fixing plate 1 from warping.

[0040] For further reference, Fig. 9 The end of the cross beam 5 close to the arc plate 404 is provided with a square groove 503 inlaid with the square block 405. Figure 7 The lower surface of the moving plate 402 is provided with a slide groove 204 running through both ends, and the lower surface of the moving plate 402 is slidably connected to at least one layer of auxiliary reinforcement mechanism 4 through the slide groove 204, and the rotating ends of the threaded rod 104, the screw rod, the threaded rod 407 and the threaded rod 502 are all integrally connected with a regular hexagonal nut; In a specific implementation, the setting of the nut facilitates the use of a wrench to twist the threaded rod 104, the screw rod, the threaded rod 407 and the threaded rod 502; In specific implementation, according to the support requirements, that is, the height of the tunnel from the top of the foundation pit, when the height is very high, when the reinforcement force provided by one auxiliary reinforcement mechanism 4 may not be enough to support, multiple auxiliary reinforcement mechanisms 4 can be installed to achieve better support effect; The lengths of the curved plate 404 and the moving plate 402 can be customized according to actual construction conditions.

Claims

1. A foundation pit support structure with a tunnel on the side wall of the foundation pit, comprising: The supporting formwork (8) is characterized in that: a fixing plate (1) is fixedly connected to the construction ground at the top of the foundation pit, a traction groove (101) penetrating the end is opened in the middle of one end of the fixing plate (1) extending into the foundation pit, V-shaped limit blocks (102) are arranged on the inner walls of both sides of the traction groove (101), a threaded rod (104) is rotatably connected to the middle of the end of the fixing plate (1) away from the foundation pit, a traction plate (2) is slidably connected inside the traction groove (101), a threaded hole is arranged in the middle of one end of the traction plate (2) close to the threaded rod (104), the threaded hole is threadedly connected to the threaded rod (104), and a square hole (201) extending vertically downwards is arranged at the beginning of the end of the traction plate (2) extending into the foundation pit, and the square hole (201) A horizontal plate (203) is fixedly connected to the middle of the traction plate (2), V-shaped limit grooves (202) that fit with the V-shaped limit blocks (102) are provided on both sides of the traction plate (2), a vertically arranged load-bearing U-shaped beam (3) is inserted into the inside of the square hole (201), a plurality of support templates (8) are evenly clamped and fixed between the load-bearing U-shaped beam (3) and the side wall of the foundation pit, and a plurality of reinforcing ribs (801) are integrally connected to the surface of one side of the support template (8) close to the side wall of the foundation pit, the reinforcing ribs (801) are arranged in an isosceles triangle structure and are arranged vertically, the sharp angle of the reinforcing ribs (801) is greater than or equal to 45° and less than or equal to 60°, and a trapezoidal groove (802) with an isosceles trapezoidal structure is formed between adjacent reinforcing ribs (801).

2. A foundation pit support structure with a tunnel on the side wall of a foundation pit according to claim 1, characterized in that: The upper surface of the traction plate (2) is provided with a slide groove (204) running through both ends, and the interior of the slide groove (204) is slidably connected to an auxiliary reinforcement mechanism (4), the auxiliary reinforcement mechanism (4) comprising a moving plate (402) slidably connected to the interior of the slide groove (204), and triangular limit blocks (403) slidably connected to grooves on both sides of the slide groove (204) are provided on both sides of the moving plate (402), and the auxiliary reinforcement mechanism (4) further comprises a fixed square plate (401) fixedly connected to the upper surface of the fixed plate (1), and a threaded rod four (407) is rotatably connected in the middle of the fixed square plate (401), and a threaded hole is provided at the end of the moving plate (402), and the end of the threaded rod four (407) close to the foundation pit is threadedly connected to the threaded hole at the end of the moving plate (402), and the end of the moving plate (402) extending into the foundation pit is integrally connected to a quarter-circular ring-shaped arc plate (404).

3. A foundation pit support structure with a tunnel on the side wall of a foundation pit according to claim 2, characterized in that: A square block (405) is provided at the bottom end of the arc-shaped plate (404), and a plurality of square grooves (301) inlaid with the square block (405) are evenly provided on a surface of one side of the load-bearing U-shaped beam (3) close to the square block (405).

4. A foundation pit support structure with a tunnel on the side wall of a foundation pit according to claim 3, characterized in that: A plurality of reinforcing ribs (406) are provided on the inner side of the arc-shaped plate (404) and are fixedly connected to the moving plate (402).

5. The foundation pit support structure with a tunnel on the side wall of the foundation pit according to claim 4, characterized in that: A crossbeam (5) is provided at the bottom end of the stressed U-shaped beam (3); one end of the crossbeam (5) is rotatably connected to a threaded rod (502) and fixedly connected to a limit rod (501); the threaded rod (502) and the limit rod (501) are arranged in parallel; the top end of the threaded rod (502) is threadedly connected to the bottom end of the stressed U-shaped beam (3); the limit rod (501) is sleeved with a hole at the bottom end of the stressed U-shaped beam (3); and a support template (8) is provided between the upper surface of the crossbeam (5) and the top wall of the tunnel.

6. A foundation pit support structure with a tunnel on the side wall of a foundation pit according to claim 5, characterized in that: A rubber gasket (9) fixed to the lower surface of the fixing plate (1) is provided at the edge of the foundation pit, and the rubber gasket (9) bypasses the top of the supporting formwork (8) and is located between the supporting formwork (8) and the load-bearing U-shaped beam (3).

7. A foundation pit support structure with a tunnel on the side wall of a foundation pit according to claim 6, characterized in that: Four insertion rods (106) are evenly arranged on the lower surface of one end of the fixing plate (1) away from the foundation pit, and an insertion plate (107) fixed to the lower surface of the fixing plate (1) is arranged between the four insertion rods (106), and the insertion rods (106) and the insertion plate (107) are plugged into the interior of the fixing seat (6).

8. The foundation pit support structure with a tunnel on the side wall of the foundation pit according to claim 7, characterized in that: The fixing seat (6) comprises a concrete body (601) cast on the construction ground at the top of the foundation pit, a sleeve tube (602) corresponding to the insertion rod (106) is provided at the top of the concrete body (601), a sleeve groove (603) corresponding to the insertion plate (107) is provided at the top of the concrete body (601), and the sleeve groove (603) is oriented parallel to the side wall of the foundation pit.

9. A foundation pit support structure with a tunnel on the side wall of a foundation pit according to claim 8, characterized in that: A through hole (103) is provided in the middle of both sides of the fixing plate (1), a screw is provided inside the through hole (103), the top of the through hole (103) is set downward, and a fixing plug plate (7) fixed to the construction ground at the top of the foundation pit is provided directly below the through hole (103), two threaded tubes (701) corresponding to the screw are integrally connected to the fixing plug plate (7), the bottom ends of the fixing plug plate (7) and the threaded tube (701) are both set in a conical shape, and the direction of the fixing plug plate (7) is parallel to the side wall of the foundation pit.

10. A foundation pit support structure with a tunnel on the side wall of a foundation pit according to claim 9, characterized in that: A square groove five (503) inlaid with the square block (405) is provided at one end of the cross beam (5) close to the arc plate (404); a slide groove (204) penetrating through both ends is provided on the lower surface of the moving plate (402); at least one layer of auxiliary reinforcement mechanism (4) is provided on the lower surface of the moving plate (402) in sliding connection with the slide groove (204); and the rotating ends of the threaded rod one (104), the screw rod, the threaded rod four (407) and the threaded rod five (502) are all integrally connected with a regular hexagonal nut.

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