Assembly type pipe jacking reaction wall mounting structure

Abstract

The utility model provides an assembly type pipe jacking reaction wall installation structure which comprises a plurality of sliding rails anchored on a tunnel entrance and exit foundation pit bottom plate and parallel to a starting portal and a reaction wall arranged on the sliding rails in a sliding mode, and the reaction wall is of an assembly type combined structure and comprises a middle module located in the middle and a middle module located on the bottom plate of the tunnel entrance and exit foundation pit bottom plate. The side modules are symmetrically arranged on the two sides of the middle module, and the side modules on the edges can slide to preset positions through the sliding rails. The sliding rail matched with the fabricated reaction wall is arranged at the bottom of the tunnel entrance and exit foundation pit, so that when the side module is installed, the side module does not need to be directly hoisted to the preset position, only the side module needs to be hoisted to the sliding rail, and the side module can move to the preset position through sliding on the sliding rail; therefore, interference between the reaction wall and a transverse steel support of a foundation pit supporting structure when the reaction wall is obliquely arranged can be avoided, and smooth hoisting and accurate positioning of the reaction wall are ensured.

Description

Technical Field

[0001] The utility model relates to the field of assembled reaction walls, in particular to an assembled pipe jacking reaction wall installation structure. Background Art

[0002] At present, in tunnel jacking construction, directly using the tunnel entrance and exit foundation pits as the jacking starting wells can greatly improve the construction space and efficiency. In order to provide strong reaction support for the jacking in the tunnel entrance and exit foundation pits, corresponding reaction walls need to be set in the tunnel entrance and exit foundation pits. However, since there is often a certain angle difference between the tunnel entrance and the inner wall of the tunnel entrance and exit foundation pits, it is necessary to set the reaction wall to an inclined state in order to better withstand the thrust generated by the jacking operation.

[0003] However, existing prefabricated reaction walls can only be installed by hoisting. Due to the inclined design of the reaction wall, direct hoisting of the prefabricated reaction wall often causes interference between the side modules at the edge of the reaction wall and the transverse steel supports of the foundation pit support structure, thus hindering the smooth installation process. This interference problem is particularly prominent in complex or space-constrained construction environments, potentially preventing the reaction wall from being accurately positioned, further hindering the smooth progress of pipe jacking construction. Therefore, a prefabricated pipe jacking reaction wall installation structure is proposed to address this issue. Utility Model Content

[0004] The main purpose of the utility model is to provide an assembled jacking pipe reaction wall installation structure to solve the problem that due to the inclined setting of the reaction wall, when the prefabricated reaction wall is directly hoisted, the side modules at the edge of the reaction wall often interfere with the horizontal steel supports of the foundation pit support structure, thereby affecting the smooth progress of the installation process.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an assembled jacking pipe reaction wall installation structure, including multiple slide rails anchored on the bottom plate of the tunnel entrance and exit foundation pit and parallel to the starting entrance, and a reaction wall slidingly set on the slide rails, wherein the reaction wall is an assembled combination structure, including a central module located in the middle, and side modules symmetrically arranged on both sides of the central module, and the side modules at the edge can slide to a preset position through the slide rails.

[0006] In the preferred solution, the number of side modules on one side of the central module is not less than one;

[0007] The side module includes a side block, and a docking groove is provided at one end of the side block close to the middle module. When the number of side modules is more than two, except for the side module at the edge, the other ends of the side blocks of the remaining side modules are all provided with docking blocks, and the docking blocks match the docking grooves.

[0008] In a preferred embodiment, the middle module comprises a wedge-shaped block that is narrow at the bottom and wide at the top, and both sides of the wedge-shaped block are provided with abutment blocks that are adapted to the docking grooves;

[0009] The side blocks connected to the wedge-shaped blocks are right-angled trapezoids, and the slopes of the connecting ends of the two blocks are adapted to each other.

[0010] In the preferred embodiment, the bottom ends of the side blocks and the wedge-shaped blocks are embedded with a plurality of concave steel parts adapted to the slide rails;

[0011] Corresponding locking holes are provided at the edges of the concave steel parts of the side blocks, the bottom ends of the docking blocks and the resistance blocks, and the slide rails. By passing bolts through the corresponding locking holes, fixation between the reaction walls and between the reaction walls and the slide rails can be achieved.

[0012] In the preferred embodiment, the back sides of the wedge-shaped block and the side block are both provided with T-shaped connecting blocks for connecting the assembled top support blocks, and the connecting ends of the assembled top support blocks are provided with T-shaped slots that are compatible with the T-shaped connecting blocks, and the T-shaped slots and the T-shaped connecting blocks are both provided with corresponding multiple connecting through-holes for fixing them to each other.

[0013] In the preferred embodiment, a U-shaped steel piece extending to both ends is embedded in the bottom end of the assembled top support block. The U-shaped steel piece is compatible with the slide rail, and both ends of the U-shaped steel piece are provided with fixing holes compatible with the locking holes of the slide rail for fixing each other.

[0014] In the preferred embodiment, a plurality of abutment connection mechanisms are respectively provided on the opposite inner wall surfaces of the tunnel entrance and exit pits on both sides of the reaction wall, which are used to connect the reaction wall with the side of the tunnel entrance and exit pits and at the same time play a limiting role in the sliding installation.

[0015] In the preferred embodiment, the interference connection mechanism includes an angle adjustment component, a sliding limit component and a support component. The angle adjustment component includes a support rod arranged on the side of the tunnel entrance and exit foundation pit, and the end of the support rod is hinged with an I-shaped adjustment rod. The support rod is provided with a receiving groove at one end close to the I-shaped adjustment rod, and an angle adjustment hydraulic cylinder is hinged in the receiving groove. The telescopic end of the angle adjustment hydraulic cylinder is hinged to the I-shaped adjustment rod.

[0016] In the preferred embodiment, the sliding limit assembly includes two sliding seats slidably arranged on an I-shaped adjusting rod, an oblique support rod is hingedly arranged on the sliding seat, the two oblique support rods are symmetrically distributed, and a U-shaped clip is hinged at the other end, a compression spring is arranged between the U-shaped clip and the I-shaped adjusting rod, two limit blocks for limiting the sliding range of the sliding seat are slidably arranged on the I-shaped adjusting rod, and a plurality of positioning holes are arranged on the I-shaped adjusting rod, and a locking hole is arranged on the limit block, and a locking bolt for locking the limit block is inserted into the locking hole and one of the positioning holes.

[0017] In a preferred embodiment, the top support assembly is a threaded telescopic support rod hinged at the other end of the support rod, and the telescopic end thereof can be movably connected to the I-shaped adjustment rod.

[0018] The utility model provides an assembled jacking pipe reaction wall installation structure. By arranging a slide rail compatible with the assembled reaction wall on the bottom of the tunnel entrance and exit foundation pit, it is convenient to install the side module without directly hoisting it to a preset position. It only needs to be hoisted onto the slide rail and moved to the preset position by sliding on the slide rail. This can avoid interference between the reaction wall and the horizontal steel support of the foundation pit support structure when it is tilted, ensuring the smooth hoisting and precise positioning of the reaction wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is the overall structural diagram of the utility model;

[0021] Figure 2 This utility model Figure 1 Top view of the structure;

[0022] Figure 3 This is a structural diagram of the reaction wall of the utility model;

[0023] Figure 4 This utility model Figure 3 Another perspective structure diagram;

[0024] Figure 5 This is a side module structure diagram at the edge of the utility model;

[0025] Figure 6 This is a side module structure diagram of the utility model near the middle module;

[0026] Figure 7 This is a structural diagram of the middle module of the utility model;

[0027] Figure 8 This is a structural diagram of the assembled top support block of the utility model;

[0028] Figure 9 This is a structural diagram of the connection between the reaction wall and the conflict connection mechanism of the utility model;

[0029] Figure 10 This is a structural diagram of the interference connection mechanism of the utility model;

[0030] Figure 11 This is an exploded structural diagram of the interference connection mechanism of the utility model;

[0031] Figure 12 This is a flowchart of the reaction wall installation of the utility model;

[0032] Figure 13 This is a structural diagram of the steel sheet pile of the utility model;

[0033] In the figure: tunnel entrance and exit foundation pit 1; supporting structure 2; sliding rail 3; reaction wall 4; middle module 40; wedge block 400; interference block 401; side module 41; side block 410; docking block 412; assembled top support block 43; concave steel part 44; locking hole 440; U-shaped steel part 45; T-shaped connecting block 47; T-shaped slot 48; connecting through hole 480; interference connection mechanism 5; angle adjustment assembly 50; support rod 500; I-shaped adjustment rod 502; angle adjustment hydraulic cylinder 503; receiving groove 504; sliding limit assembly 51; sliding seat 510; diagonal support rod 511; U-shaped clamp 512; compression spring 513; limit block 514; locking hole 515; positioning hole 516; locking bolt 517; top support assembly 52; steel sheet pile 6; flexible inclined plate 601; bite groove 602. DETAILED DESCRIPTION

[0034] Example 1

[0035] like Figure 1 and 2 As shown, a pipe jacking method starting from a foundation pit, the method comprising:

[0036] S1. Excavate the foundation pit and carry out foundation pit support directly on the starting side according to the design requirements to ensure the stability of the foundation pit, and excavate the tunnel entrance and exit foundation pit 1.

[0037] S2. Pit top support: A support structure 2 is installed on the top of the foundation pit to prevent the foundation pit from collapsing during or after excavation. The support structure 2 is a steel internal support structure, which is a commonly used technical means in this field and will not be described in detail here.

[0038] S3. Set up a reaction wall 4 and construct a bottom plate in the foundation pit. The bottom plate adopts a concrete casting structure, and set up a reaction wall 4 parallel to the starting hole on the bottom plate to provide support and withstand the thrust generated by the jacking operation.

[0039] With such a design, the starting work of the jacking pipe can be carried out directly in the tunnel entrance and exit foundation pit 1 on the starting side. At the same time, a reaction wall 4 is set in the tunnel entrance and exit foundation pit 1 to provide support force for the jacking pipe. Therefore, the working pit construction step is skipped by excavating the tunnel entrance and exit foundation pit 1 and installing the reaction wall 4, which effectively improves the space and efficiency of the jacking pipe construction. Especially when the space is limited and the construction environment is complex, it can effectively improve the construction efficiency and reduce the problems caused by the traditional working pit method.

[0040] Example 2

[0041] like Figure 1-13As shown, in order to further improve the installation efficiency of the reaction wall 4, the reaction wall 4 in this embodiment is an assembled concrete composite structure, which can be prefabricated in a factory to shorten its production time and ensure the structural stability and construction efficiency of the reaction wall. It specifically includes a central module 40 located in the middle and side modules 41 symmetrically arranged on both sides of the central module 40.

[0042] Secondly, due to the angle difference between the tunnel entrance and the inner wall of the tunnel entrance and exit foundation pit 1, the reaction wall 4 needs to be set obliquely in the tunnel entrance and exit foundation pit 1, such as Figure 2 As shown, directly hoisting the assembled reaction wall 4 will cause the side modules 41 at the edge to interfere with the horizontal steel supports of the supporting structure 2. Therefore,

[0043] This embodiment also includes a plurality of slide rails 3 anchored on the bottom plate of the tunnel entrance and exit foundation pit 1 and parallel to the starting hole. The side modules 41 at the edge can slide to the preset position through the slide rails 3.

[0044] The method for setting the reaction wall 4 in step S3 includes:

[0045] S31. Set multiple slide rails 3 anchored on the bottom plate. The slide rails 3 are parallel to the starting hole. The length and position of the slide rails 3 should be accurately designed according to the size and inclination angle of the reaction wall to ensure that the reaction wall 4 can be smoothly installed to the predetermined position.

[0046] S32. Hoist the side module 41 on one side of the central module 40 from the horizontal steel support space of the supporting structure 2 onto the slide rail 3, and then slide it along the slide rail 3 to the corresponding position. It should be noted that the parallelism of the slide rail and the stability of the side module should be ensured during the sliding process to avoid module displacement or damage.

[0047] S33, repeat step S32, hoist the side module 41 on the other side of the middle module 40 and slide it to the corresponding position.

[0048] S34, hoist the middle module 40 between the side modules 41 on both sides, and complete the fixation between the side modules 41, the middle module 40 and the slide rails 3.

[0049] It should be noted that the power for the sliding of the side module 41 can be achieved through a hydraulic cylinder or a winch. In this embodiment, a winch is preferred. The winch is arranged at both ends of the slide rail 3, and the side module 41 that needs to slide is connected by a steel wire rope, and its sliding on the slide rail 3 is achieved by winding.

[0050] This design, through the combination of the slide rail 3 and the modular design, enables the reaction wall 4 to be installed efficiently and accurately, which is particularly suitable for construction environments with limited space such as tunnel entrance foundation pits. This method not only improves the installation efficiency of the reaction wall 4, but also avoids spatial interference during the construction process, thereby improving the operating efficiency of the entire jacking construction.

[0051] Furthermore, the number of side modules 41 on one side of the middle module 40 is not less than one. In this embodiment, two are preferred.

[0052] The side module 41 includes a side block 410, and a docking groove 411 is provided at one end of the side block 410 close to the middle module 40. When the number of side modules 41 is more than two, except for the side module 41 at the edge, the other ends of the side blocks 410 of the other side modules 41 are provided with docking blocks 412, and the docking blocks 412 match the docking groove 411. By plugging the docking blocks 412 into the docking groove 411, the docking between adjacent side modules 41 can be effectively achieved.

[0053] Furthermore, the middle module 40 includes a wedge-shaped block 400 that is narrow at the bottom and wide at the top, and both sides of the wedge-shaped block 400 are provided with interference blocks 401 that are adapted to the docking grooves 411.

[0054] The side block 410 connected to the wedge-shaped block 400 is a right-angled trapezoid, and the slopes of the connecting ends of the two are adapted to each other. Since the middle module 40 adopts the wedge-shaped block 400, the interference blocks 401 on both sides can perfectly match the docking grooves 411 on the side modules 41, ensuring a tight connection between the modules.

[0055] In the preferred embodiment, the bottom ends of the side block 410 and the wedge block 400 are embedded with multiple concave steel parts 44 that are compatible with the slide rails 3. In this embodiment, the number of concave steel parts 44 is two, and the side block 410 is slidably mounted on the corresponding two slide rails 3 through the two concave steel parts 44, thereby achieving a sliding effect.

[0056] Corresponding locking holes 440 are provided at the edges of the concave steel parts 44 of the side block 410, the bottom ends of the docking block 412 and the resistance block 401, and the slide rail 3. By passing bolts through the corresponding locking holes 440, the reaction walls 4 and the reaction walls 4 and the slide rail 3 can be fixed.

[0057] With such a design, the adjacent side modules 41, the middle module 40 and the slide rail 3 can be connected and fixed by bolts, thereby providing effective counter-support. It should be noted that the specific number of bolts in this embodiment can be adjusted according to actual conditions.

[0058] In the preferred embodiment, the back of the wedge-shaped block 400 and the side block 410 are both provided with a T-shaped connecting block 47 for connecting the assembled top support block 43, and the connecting end of the assembled top support block 43 is provided with a T-shaped slot 48 that is compatible with the T-shaped connecting block 47, and the T-shaped slot 48 and the T-shaped connecting block 47 are both provided with corresponding multiple connecting through-holes 480 for fixing them to each other.

[0059] A U-shaped steel part 45 extending to both ends is embedded in the bottom end of the assembled top support block 43. The U-shaped steel part 45 is adapted to the slide rail 3. In this embodiment, there are two U-shaped steel parts 45, and both ends thereof are provided with fixing holes 450 adapted to the locking holes 440 of the slide rail 3 for fixing to each other.

[0060] The installation method of the assembled top support block 43 is: after hoisting the side module 41 or the middle module 40 onto the slide rail 3, the corresponding assembled top support block 43 is also hoisted onto the corresponding slide rail 3, and the T-shaped connecting block 47 is plugged into the T-shaped slot 48, and then the two are fixed with bolts, and then the whole is slid or fixed.

[0061] With such a design, the assembled supporting block 43 can be used to further enhance the strength of the overall structure. At the same time, the assembled design can also reduce the weight of a single hoisting operation.

[0062] It should be noted that the assembled top support block 43, the side modules 41 and the middle module 40 are all provided with lifting ears for easy lifting.

[0063] In the preferred embodiment, in order to further improve the support for the reaction wall 4 and to position it for sliding installation, a plurality of interference connection mechanisms 5 are respectively provided on the opposite inner wall surfaces of the tunnel entrance and exit foundation pit 1, located on both sides of the reaction wall 4. In this embodiment, the number of interference connection mechanisms 5 on one side is two, which are used to connect the reaction wall 4 to the side surface of the tunnel entrance and exit foundation pit 1 and also serve as a limit for the sliding installation.

[0064] The interfering connection mechanism 5 includes an angle adjustment component 50, a sliding limit component 51 and a supporting component 52. The angle adjustment component 50 includes a support rod 500 fixed on the side of the tunnel entrance and exit foundation pit 1. The support rod 500 is fixed to the side wall of the tunnel entrance and exit foundation pit 1 by welding or bolt installation. The end of the support rod 500 is hinged with an I-shaped adjustment rod 502, so that the I-shaped adjustment rod 502 can rotate on the support rod 500 to adjust its own angle. The support rod 500 is close to the end of the I-shaped adjustment rod 502 and is provided with a receiving groove 504, and an angle adjustment hydraulic cylinder 503 is hinged in the receiving groove 504. The telescopic end of the angle adjustment hydraulic cylinder 503 is hinged to the I-shaped adjustment rod 502, so that the angle of the I-shaped adjustment rod 502 can be adjusted by the telescopic end of the angle adjustment hydraulic cylinder 503. In addition, when it is in the telescopic state, the angle adjustment hydraulic cylinder 503 can be stored in the receiving groove 504.

[0065] The sliding limit assembly 51 includes two sliding seats 510 slidably arranged on the I-shaped adjustment rod 502, and an oblique support rod 511 is hingedly arranged on the sliding seat 510. The two oblique support rods 511 are symmetrically distributed, and a U-shaped clamp 512 is hinged at the other end. A compression spring 513 is provided between the U-shaped clamp 512 and the I-shaped adjustment rod 502. The two ends of the compression spring 513 are fixed to the U-shaped clamp 512 and the I-shaped adjustment rod 502 respectively. Therefore, the tension of the compression spring 513 can push the U-shaped clamp 512 out and make the two sliding seats 510 close together. When the U-shaped clamp 512 is resisted by the side module 41, it can be squeezed out. The compression spring 513 is pressed to separate the two sliding seats 510. Two limit blocks 514 for limiting the sliding range of the sliding seat 510 are slidingly provided on the I-shaped adjustment rod 502, and a plurality of positioning holes 516 are provided on the I-shaped adjustment rod 502. The limit blocks 514 are provided with locking holes 515. The locking holes 515 and one of the positioning holes 516 are connected with locking bolts 517 for locking the limit blocks 514. By fixing the two limit blocks 514 on the I-shaped adjustment rod 502, the maximum sliding range of the two sliding seats 510 can be achieved, thereby limiting the position of the side module 41 and preventing it from sliding out of the preset position.

[0066] With such a design, the precise positioning and firm fixation between the reaction wall 4 and the tunnel entrance and exit foundation pit 1 can be achieved through the wedge-shaped insertion structure of the resistance connection mechanism 5 and the wedge-shaped block 400. Through the adjustment of the angle adjustment component 50, the I-shaped adjustment rod 502 can effectively match the angle of the reaction wall 4, and the wedge-shaped insertion structure of the wedge-shaped block 400 provides a precise plug-in force between the side module 41 and the slide rail 3, so that the reaction wall 4 can not only slide smoothly to the predetermined position during the installation process, but also be firmly fixed after it is in place.

[0067] Specifically, the wedge-shaped block 400, through its sloped shape, mates with the side modules 41, effectively preventing positional deviation during insertion. Furthermore, the wedge-shaped structure's self-locking function significantly enhances the stability of the reaction wall once it reaches the preset position, preventing the loosening or misalignment that can occur with traditional support structures. Furthermore, the wedge-shaped structure provides uniform pressure distribution between the reaction wall 4 and the foundation pit wall, effectively reducing localized stress concentration and extending the service life of the support system.

[0068] Furthermore, in step S31, the interference connection mechanism 5 is installed on both sides of the reaction wall 4 on the relative inner wall surfaces of the tunnel entrance and exit foundation pit 1, and the I-shaped adjustment rod 502 and the central axis of the sliding limit assembly 51 are adjusted to be perpendicular to the central axis of the reaction wall 4 through the angle adjustment hydraulic cylinder 503, and then the limit block 514 is fixed on the corresponding positioning hole 516 according to the fixed position of the side module 41 at the edge.

[0069] In step S32, when the side module 41 at the sliding edge is moved to connect with the U-shaped clamp 512 of the interference connection mechanism 5, after the wedge block 400 is inserted, the side module 41 is pushed to tightly contact and connect with the interference connection mechanism 5.

[0070] In the preferred embodiment, the top support assembly 52 is a threaded telescopic support rod hinged at the other end of the support rod 500, and its telescopic end can be movably connected to the I-shaped adjustment rod 502. When the reaction wall 4 is installed, the telescopic end of the threaded telescopic support rod can be rotated to make it collide with the I-shaped adjustment rod 502, thereby relieving the pressure on the angle adjustment hydraulic cylinder 503.

[0071] In the preferred embodiment, the foundation pit support structure is a continuous steel sheet pile support structure formed by multiple steel sheet piles 6 that are interlocked one by one. The steel sheet piles 6 include a plate body 600, which is the main part of the steel sheet pile and is responsible for bearing most of the soil pressure and water pressure. In this embodiment, the steel sheet piles are hot-rolled steel plates. Flexible inclined plates 601 are symmetrically connected on both sides of the plate body 600 to provide additional lateral support force. At the same time, through its own deformation ability, it can bend moderately under pressure to adapt to the deformation requirements of the foundation pit soil, so that the support structure can adapt to the slight displacement of the foundation pit soil, avoid the limitations of traditional rigid support, reduce the impact on the steel sheet piles, and avoid structural damage to the foundation pit due to geological activities. Steel plates thinner than the steel sheet piles 6 can be used. The other end of the flexible inclined plate 601 is connected to a biting groove 602 for biting between the steel sheet piles 6.

[0072] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An assembled pipe jacking reaction wall installation structure, characterized by: The invention comprises a plurality of slide rails (3) anchored on the bottom plate of the tunnel entrance and exit foundation pit (1) and parallel to the starting hole, and a reaction wall (4) slidingly arranged on the slide rails (3), wherein the reaction wall (4) is an assembled composite structure, comprising a central module (40) located in the middle, and side modules (41) symmetrically arranged on both sides of the central module (40), and the side modules (41) at the edge can slide to a preset position through the slide rails (3).

2. The assembled pipe jacking reaction wall installation structure according to claim 1, characterized in that: The number of the side modules (41) on one side of the middle module (40) is not less than one; The side module (41) includes a side block (410), and one end of the side block (410) close to the middle module (40) is provided with a docking groove (411). When the number of the side modules (41) is more than two, except for the side module (41) at the edge, the other ends of the side blocks (410) of the other side modules (41) are provided with a docking block (412), and the docking block (412) matches the docking groove (411).

3. The assembled pipe jacking reaction wall installation structure according to claim 2, characterized in that: The middle module (40) comprises a wedge-shaped block (400) that is narrow at the bottom and wide at the top, and both sides of the wedge-shaped block (400) are provided with abutment blocks (401) that are adapted to the docking grooves (411); The side block (410) connected to the wedge-shaped block (400) is a right-angled trapezoid, and the slopes of the connecting ends of the two are adapted to each other.

4. The assembled pipe jacking reaction wall installation structure according to claim 3 is characterized by: The bottom ends of the side blocks (410) and the wedge-shaped blocks (400) are both embedded with a plurality of concave steel parts (44) adapted to the slide rails (3); Corresponding locking holes (440) are provided at the edges of the concave steel member (44) of the side block (410), the bottom ends of the docking block (412) and the abutting block (401), and the slide rail (3). By passing bolts through the corresponding locking holes (440), fixation between the reaction walls (4) and between the reaction walls (4) and the slide rail (3) can be achieved.

5. The assembled pipe jacking reaction wall installation structure according to claim 3 or 4, characterized in that: The backs of the wedge-shaped block (400) and the side block (410) are both provided with T-shaped connecting blocks (47) for connecting to the assembled top support block (43), and the connecting end of the assembled top support block (43) is provided with a T-shaped slot (48) adapted to the T-shaped connecting block (47), and the T-shaped slot (48) and the T-shaped connecting block (47) are both provided with corresponding multiple connecting through holes (480) for fixing them to each other.

6. The assembled pipe jacking reaction wall installation structure according to claim 5, characterized in that: A U-shaped steel piece (45) extending toward both ends is embedded in the bottom end of the assembled top support block (43). The U-shaped steel piece (45) is adapted to the slide rail (3), and both ends thereof are provided with fixing holes (450) adapted to the locking holes (440) of the slide rail (3) for fixing them to each other.

7. The assembled pipe jacking reaction wall installation structure according to claim 6, characterized in that: A plurality of abutting connection mechanisms (5) are respectively provided on opposite inner wall surfaces of the tunnel entrance and exit foundation pit (1) and are located on both sides of the reaction wall (4), for connecting the reaction wall (4) with the side surfaces of the tunnel entrance and exit foundation pit (1), and at the same time play a role in limiting the sliding installation.

8. The assembled pipe jacking reaction wall installation structure according to claim 7, characterized in that: The interfering connection mechanism (5) comprises an angle adjustment assembly (50), a sliding limit assembly (51) and a supporting assembly (52). The angle adjustment assembly (50) comprises a support rod (500) arranged on the side of the tunnel entrance / exit foundation pit (1). An I-shaped adjustment rod (502) is hingedly connected to the end of the support rod (500). An accommodating groove (504) is provided at one end of the support rod (500) close to the I-shaped adjustment rod (502). An angle adjustment hydraulic cylinder (503) is hingedly provided in the accommodating groove (504). The telescopic end of the angle adjustment hydraulic cylinder (503) is hingedly connected to the I-shaped adjustment rod (502).

9. The assembled pipe jacking reaction wall installation structure according to claim 8, characterized in that: The sliding limit assembly (51) comprises two sliding seats (510) slidably arranged on an I-shaped adjustment rod (502), an oblique support rod (511) being hingedly arranged on the sliding seat (510), the two oblique support rods (511) being symmetrically distributed, and a U-shaped clamp (512) being hingedly arranged at the other end, a compression spring (513) being arranged between the U-shaped clamp (512) and the I-shaped adjustment rod (502), two limit blocks (514) for limiting the sliding range of the sliding seat (510) being slidably arranged on the I-shaped adjustment rod (502), a plurality of positioning holes (516) being arranged on the I-shaped adjustment rod (502), a locking hole (515) being arranged on the limit block (514), and a locking bolt (517) for locking the limit block (514) being inserted into the locking hole (515) and one of the positioning holes (516).

10. The assembled pipe jacking reaction wall installation structure according to claim 9, characterized in that: The top support assembly (52) is a threaded telescopic support rod hinged to the other end of the support rod (500), and its telescopic end can be movably connected to the I-shaped adjustment rod (502).

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