Bidirectional translation system of tunnel boring machine in narrow and small area of multilayer interchange

Abstract

The bidirectional translation system of the tunnel boring machine in the narrow and small area of the multilayer interchange comprises a receiving well corresponding to a receiving tunnel portal, and a transverse track group and a longitudinal track group are arranged in the receiving well; the transverse rail set corresponds to a receiving tunnel portal, the longitudinal rail set and the transverse rail set are arranged on the same plane and are perpendicular to each other, a movable platform is arranged on the longitudinal rail set, steel rails are arranged on the movable platform and are equal to the transverse rail set in height, and the pipe jacking machine is transferred from the transverse rail set to the longitudinal rail set through the movable platform. According to the lifting device, the pipe jacking machine is pushed by a certain distance in the hole outlet direction and then pushed by a certain distance in the direction perpendicular to the hole outlet direction to a lifting area, and then the rectangular pipe jacking machine can be directly disassembled and lifted; the problem that a rectangular pipe jacking machine cannot be directly dismounted and hoisted at a pipe jacking machine exit in a trapped, narrow and semi-closed space of a multi-layer interchange viaduct is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rectangular pipe jacking machine construction, in particular to a two-way translation system for a tunnel boring machine in a narrow area of a multi-layer overpass. Background Technique

[0002] The traditional construction method for the launch of a rectangular pipe jacking machine generally involves laying steel plates and fabricating electric welding piers as reaction forces, and using a hydraulic propulsion mechanism to push the pipe jacking machine out of the tunnel. It is necessary for workers to constantly monitor the direction of the rectangular pipe jacking machine, which requires a high level of manual operation skills and experience. Moreover, the translation efficiency is relatively low, and it is difficult to ensure the accuracy during two-way translation.

[0003] With the increase of urban municipal engineering facilities, when a rectangular pipe jacking machine is launched during construction, it is often restricted by existing buildings or bridges. The pipe jacking machine cannot be vertically launched and hoisted at the conventional position in a narrow area surrounded by buildings such as multi-layer overpass viaducts. Instead, two-way translation and launch construction need to be carried out in a narrow semi-closed space, which greatly increases the construction difficulty. In the prior art, for example, the construction method for the launch of a rectangular pipe jacking machine with the publication number CN201410853072.0 uses a concrete support as a temporary portal, which occupies a large area and has a complex construction. Therefore, it is urgent to develop a construction method that can perform two-way launch of a pipe jacking machine in a narrow semi-closed pit to solve the existing technical problems. Summary of the Utility Model

[0004] In view of the deficiencies in the above background technique, the utility model provides a two-way translation system for a tunnel boring machine in a narrow area of a multi-layer overpass, which solves the problems in the prior art that the pipe jacking machine cannot be hoisted at the original parking position, resulting in great construction difficulty and low efficiency for the two-way launch of the pipe jacking machine in a narrow semi-closed pit.

[0005] The technical solution of the utility model is realized as follows: A two-way translation system for a tunnel boring machine in a narrow area of a multi-layer overpass includes a receiving well corresponding to a receiving portal. A transverse track group and a longitudinal track group are arranged in the receiving well; the transverse track group corresponds to the receiving portal, the longitudinal track group is in the same plane as the transverse track group and is vertically arranged. A moving platform is arranged on the longitudinal track group, and a steel rail is arranged on the moving platform. The steel rail is arranged at the same height as the transverse track group. The pipe jacking machine uses the moving platform to complete the transfer from the transverse track group to the longitudinal track group.

[0006] Further preferably, one end of the longitudinal track group corresponds to the transverse track group, and the other end is set as a hoisting area. After launch, the pipe jacking machine enters the steel rail on the moving platform along the transverse track group under the action of a driving component. The moving platform carrying the pipe jacking machine moves along the longitudinal track group to the hoisting area under the action of the driving component; during these two processes, the driving component performs reversing pushing.

[0007] Further preferably, the driving assembly includes a jacking cylinder and a rail clamp, and the rail clamp provides a jacking reaction force support for the jacking cylinder. The first jacking point is the rectangular pipe jacking machine, and the second jacking cabinet vertex is the steel plate platform carrying the pipe jacking machine. The hydraulic cylinder cooperates with the rail clamp to alternately push to the dismantling hoisting area.

[0008] Further preferably, the receiving well is an L-shaped foundation pit, a compacted cushion layer is laid in the L-shaped foundation pit, and the transverse track group and the longitudinal track group are both arranged on the compacted cushion layer; ensuring the stability of the longitudinal track group and the transverse track group.

[0009] Further preferably, the transverse track group includes a transverse concrete cushion layer, a plurality of transverse strip bases are provided on the transverse concrete cushion layer, and a plurality of parallel transverse steel rails are provided on the transverse strip bases.

[0010] Further preferably, the transverse rail is arranged along the exit direction of the pipe jacking machine, and the height of the transverse rail is consistent with the bottom elevation of the receiving tunnel door.

[0011] Further preferably, the longitudinal track group includes a longitudinal concrete cushion layer, a plurality of longitudinal strip foundations are provided on the longitudinal concrete cushion layer, a plurality of parallel longitudinal steel rails are provided on the longitudinal strip foundations, the mobile platform is arranged on the longitudinal steel rails, and the steel rails are arranged at the same height and in parallel with the transverse rails.

[0012] Further preferably, the mobile platform is a thick steel plate, and a friction reducer is provided between the longitudinal rails and the mobile platform to reduce the friction force exerted on the mobile platform.

[0013] Further preferably, the longitudinal concrete cushion layer is lower than the transverse concrete cushion layer to ensure that the rails are at the same height as the transverse rails; when the rails are butt-jointed with the transverse rails, rail clamps are used for butt-jointing and fixing.

[0014] Further preferably, a receiving well retaining wall is laid around the receiving well and avoids existing buildings.

[0015] The beneficial effects of the utility model are as follows: the utility model realizes that after the pipe jacking machine is pushed along the direction of the hole for a certain distance, it is pushed along the direction perpendicular to the hole for a certain distance to the hoisting area, and then the rectangular pipe jacking machine can be directly disassembled and hoisted, which solves the problem that the rectangular pipe jacking machine cannot be directly dismantled and hoisted at the exit of the pipe jacking machine in the narrow semi-enclosed space surrounded by multi-story interchange viaducts. The L-shaped foundation pit of the utility model cooperates with the vertically arranged longitudinal track group and transverse track group to minimize the demand for the chamber and the disturbance to the surrounding area, avoids the demand for expanding the chamber, the demand for lifting beam machinery, the demand for flatbed trucks and the demand for subsequent supporting decomposition, greatly saves operation time and improves construction efficiency. By docking the mobile platform and the equal-height rails, the smooth turning of the pipe jacking machine from the horizontal to the longitudinal direction is realized, which improves the construction safety and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the embodiments of the present utility model, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0017] Figure 1 It is a plan view of the construction state of the receiving well of the rectangular pipe jacking machine of the present utility model;

[0018] Figure 2 For Figure 1 View A-A in

[0019] Figure 3 For Figure 2 Partial enlarged view at position I in

[0020] Figure 4 It is a schematic diagram of laying strip foundation;

[0021] Figure 5 It is a schematic diagram of laying steel rails;

[0022] Figure 6 It is a schematic diagram of laying a mobile platform;

[0023] Figure 7 It is a schematic diagram of the butt joint of the transverse steel rail and the steel rail.

[0024] Figure 8 It is a schematic diagram of the state where the rectangular pipe jacking machine is separated from the pipe segment;

[0025] Figure 9 It is a schematic diagram of the state where the rectangular pipe jacking machine moves to the mobile platform;

[0026] Figure 10 It is a schematic diagram of the state where the rectangular pipe jacking machine moves to the hoisting area.

[0027] In the figure: 1. Rectangular pipe jacking machine, 2. Tunnel portal, 3. Retaining wall of the receiving well, 4. Existing bridge pier, 5. Existing bridge road, 6. Transverse concrete cushion, 7. Transverse strip foundation, 8. Transverse steel rail, 9. Longitudinal concrete cushion, 10. Longitudinal strip foundation, 11. Longitudinal steel rail, 12. Mobile platform, 13. Steel rail, 14. Hoisting area, 15. Compacted cushion, 16. Foundation soil, 17. Segment, 18. Receiving well. Specific embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that the present utility model is an improvement on the device components and does not involve the improvement of circuits and control programs. The present utility model only controls the operation and stop of each electronic device through a PLC control system. Since the PLC control system is a mature automatic control system in the industry, the content of circuits and control programs will not be elaborated in the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0032] Such as Figure 1As shown in the figure, Embodiment 1 provides a two-way translation system for a tunneling machine in a narrow area of a multi-level interchange, which includes a receiving shaft 18 corresponding to the receiving portal 2. That is, before the pipe jacking machine exits the tunnel, a receiving shaft foundation pit that meets the requirements is excavated. The receiving shaft is divided into a foundation pit along the direction of the pipe jacking machine exiting the tunnel and a foundation pit perpendicular to the direction of the pipe jacking machine. The hoisting position at the moving end of the foundation pit avoids existing interchange bridges and buildings. A transverse track group and a longitudinal track group are provided in the receiving shaft 18. The transverse track group is arranged along the direction of the pipe jacking machine exiting the tunnel and corresponds to the receiving portal 2, so that the pipe jacking machine can smoothly enter the transverse track after exiting the tunnel. The longitudinal track group is in the same plane as the transverse track group and is perpendicularly arranged to achieve the smooth turning of the pipe jacking machine. A moving platform 12 is provided on the longitudinal track group, and a steel rail 13 is provided on the moving platform 12. The steel rail 13 is arranged at the same height as the transverse track group. Supported by the transverse track group, the pipe jacking machine after exiting the tunnel enters the moving platform 12 through the steel rail 13, and then the pipe jacking machine uses the moving platform 12 to complete the transfer from the transverse track group to the longitudinal track group. According to the above structural design, the utility model can realize the rapid on-site removal of the sliding shoe type rear support in the tunnel, avoiding the requirements for enlarging the chamber, hoisting beam tools, flatbed trucks, and the decomposition of the rear support, and greatly saving the operation time.

[0033] As a preferred solution, in this embodiment, one end of the longitudinal track group corresponds to the transverse track group, and the other end is set as a hoisting area 14. The pipe jacking machine after exiting the tunnel enters the steel rail 13 on the moving platform 12 along the transverse track group under the action of the driving component. The moving platform 12 carrying the pipe jacking machine moves along the longitudinal track group to the hoisting area 14 under the action of the driving component. Preferably, the driving component includes a jacking oil cylinder and a rail clamp, and the rail clamp provides a jacking reaction force support for the jacking oil cylinder. In the specific implementation process, the jacking oil cylinder is a hydraulic cylinder. The rectangular pipe jacking machine uses the jacking oil cylinder to jack out of the tunnel with the segment as a fulcrum. After leaving a certain space, it is changed to use the rail clamp to clamp the steel rail as a fulcrum, and the rectangular pipe jacking machine is jacked and translated along the direction of exiting the tunnel. After being translated onto the steel rail on the moving platform at the intersection, the rail clamp and the hydraulic cylinder change positions and directions. The rail clamp clamps the longitudinal track group laid perpendicular to the direction of exiting the tunnel, and the hydraulic cylinder jacks the steel plate platform carrying the rectangular pipe jacking machine and jacks it along the direction perpendicular to the direction of the pipe jacking machine exiting the tunnel until it reaches the hoisting area for hoisting.

[0034] The utility model realizes that after the pipe jacking machine is jacked and translated a certain distance along the direction of exiting the tunnel, and then jacked and translated a certain distance along the direction perpendicular to the direction of exiting the tunnel to the hoisting area, and then the rectangular pipe jacking machine can be directly disassembled and hoisted, solving the problem that the rectangular pipe jacking machine cannot be directly disassembled and hoisted at the exit of the pipe jacking machine in a multi-level interchange viaduct surrounded and narrow semi-closed space.

[0035] As Figure 2 、 3As shown in the figure, in Embodiment 2, a two-way translation system for a tunnel boring machine in a narrow area of a multi-level interchange. On the basis of Embodiment 1, the receiving well 18 is preferably an L-shaped foundation pit to minimize the chamber requirements and the disturbance to the surrounding area. A receiving well retaining wall 3 is laid around the receiving well 18; the hoisting position at the moving end of the foundation pit avoids existing interchange bridges and buildings such as existing bridge piers 4 and existing bridges 5. A compacted cushion layer 15 is laid on the foundation soil layer 16 in the L-shaped foundation pit, and the compacted cushion layer 15 is compacted by covering with backfilled concrete to ensure the bearing capacity of the foundation. The transverse track group and the longitudinal track group are both arranged on the compacted cushion layer 15. Under the action of the corresponding driving components, the jacking stroke is in an "L" shape to achieve rapid transfer.

[0036] When the exit of the pipe jacking machine in a narrow semi-closed space surrounded by a multi-level interchange viaduct cannot directly remove and hoist the rectangular pipe jacking machine, it is necessary to jack the rectangular pipe jacking machine a certain distance along the exit direction, and then jack it a certain distance perpendicular to the exit direction until it reaches the hoisting area, and then disassemble and hoist the rectangular pipe jacking machine. The jacking stroke is in an "L" shape. When jacking, the main support is the rail clamped by the rail clamp. The first jacking push point is the rectangular pipe jacking machine, and the second jacking vertex is the steel plate platform carrying the pipe jacking machine. The hydraulic cylinder cooperates with the rail clamp to alternately jack step by step to the disassembly and hoisting area.

[0037] As a preferred solution, the transverse track group in this embodiment includes a transverse concrete cushion layer 6. A number of transverse strip footings 7 are provided on the transverse concrete cushion layer 6. The transverse strip footings 7 are laid to a certain height along the exit direction of the pipe jacking machine, and the transverse strip footings 7 should meet the bearing requirements of the rectangular pipe jacking machine. A number of parallel transverse rails 8 are provided on the transverse strip footings 7. The transverse rails 8 are arranged along the exit direction of the pipe jacking machine, and the height of the transverse rails 8 is the same as the bottom elevation of the receiving portal 2; it is convenient for the rectangular pipe jacking machine to smoothly exit the hole and can smoothly enter the transverse rails 8 at the same time.

[0038] As a preferred solution, the longitudinal track group in this embodiment includes a longitudinal concrete cushion layer 9. The longitudinal concrete cushion layer 9 is lower than the transverse concrete cushion layer 6 to enable the later laid moving platform and rails to be at the same height as the transverse rails 8. A number of longitudinal strip footings 10 are provided on the longitudinal concrete cushion layer 9. The longitudinal strip footings 10 are perpendicular to the transverse rails 8. A number of parallel longitudinal rails 11 are provided on the longitudinal strip footings 10. The moving platform 12 is arranged on the longitudinal rails 11, and the rails 13 are at the same height as and parallel to the transverse rails 8 and are butt-jointed and fixed with rail splints when the rails 13 are butted against the transverse rails 8 to ensure that the rectangular pipe jacking machine can smoothly transfer from the transverse rails 8 to the rails 13.

[0039] As a preferred solution, the mobile platform 12 in this embodiment is a thick steel plate to ensure stable bearing of the pipe jacking machine; an antifriction agent is provided between the longitudinal steel rail 11 and the mobile platform 12, and the antifriction agent can be butter to reduce the friction between the mobile platform 12 and the longitudinal steel rail 11. According to needs, butter can also be applied to the transverse steel rail 8 in advance to reduce the friction between the pipe jacking machine and the track and enable it to move smoothly.

[0040] The L-shaped foundation pit of the present utility model is combined with the vertically arranged longitudinal track group and transverse track group, minimizing the chamber requirements and disturbances to the surrounding area as much as possible, avoiding the expansion of chamber requirements, the need for lifting beam tools, the need for flatbed trucks, and the need for post-matching decomposition, greatly saving operation time and improving construction efficiency. By docking the mobile platform and the equal-height steel rails, the smooth turning of the pipe jacking machine from transverse to longitudinal is realized, improving construction safety.

[0041] As Figures 4 - 7 shown, the specific implementation process is as follows:

[0042] 1. Construction of the two-way translation facility for the receiving well, as Figures 4 - 7 shown:

[0043] (1) Excavate the "L"-shaped foundation pit for the receiving well as required, and backfill and compact the concrete covering soil to form a compacted cushion layer 15 to ensure the bearing capacity of the foundation; then lay a concrete cushion layer to form a transverse concrete cushion layer 6 and a longitudinal concrete cushion layer 9.

[0044] (2) Lay a concrete strip foundation along the exit direction on the concrete cushion layer to form a transverse strip foundation 7, and lay a concrete strip foundation along the direction perpendicular to the exit to form a longitudinal strip foundation 10. There is a certain height difference between the transverse strip foundation 7 and the longitudinal strip foundation 10, and steel plate connectors are embedded in the strip foundation.

[0045] (3) Lay multiple steel rails Ⅰ along the direction of the strip foundation on the transverse strip foundation 7 to form a transverse steel rail 8, and lay multiple steel rails Ⅱ along the direction of the strip foundation on the longitudinal strip foundation 10 to form a longitudinal steel rail 11; and press and fix it with a pressing plate and connect it to the embedded part. Among them, the height of the steel rail Ⅰ is the same as the bottom of the pipe jacking machine.

[0046] (4) Lay a welded steel plate platform on the steel rail Ⅱ to form a mobile platform, and slide and move the mobile platform and the steel rail Ⅱ to the docking position with the steel rail Ⅰ.

[0047] (5) Lay a steel rail Ⅲ on the mobile platform to form a steel rail 13, and the laying direction and height are the same as those of the steel rail Ⅰ, and realize the docking and fixing of the steel rail Ⅲ and the steel rail Ⅰ through a steel rail splint, and finally weld and fix the steel rail Ⅲ and the steel plate platform; thus, the construction of the translation foundation of the receiving well is completed.

[0048] 2. Construction of the specific steps for the two-way translation of the rectangular pipe jacking machine, as Figures 8 - 10 shown:

[0049] After the tunneling of the rectangular pipe jacking machine 1 is completed, two hydraulic cylinders are used to push the rectangular pipe jacking machine out of the hole with the pipe segment 17 as the fulcrum. After entering the rail I, the portal is blocked, and butter is applied to the rail I in advance to reduce the friction resistance coefficient.

[0050] (2) Two rail clamping devices are installed on the rail I as reaction points, and two hydraulic cylinders are used to push synchronously. The rectangular pipe jacking machine is pushed and advanced step by step to the rail III of the moving platform, ensuring that the side direction of the pipe jacking machine completely enters the vertical disassembly shaft.

[0051] (3) Remove the splint connecting the rail III and the rail I, adjust the positions of the two rail clamping devices and install them on the rail II. Two hydraulic cylinders use the rail clamping devices as the force application points. Butter is applied to the rail II in advance to reduce the friction resistance coefficient, and the rectangular pipe jacking machine is pushed synchronously along the rail II to the lifting area, and then it can be directly removed and lifted, solving the problem that the rectangular pipe jacking machine cannot be directly removed and lifted at the exit of the pipe jacking machine in the multi-level overpass viaduct siege and narrow semi-closed space.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bidirectional translation system for a tunnel boring machine in a narrow area of ​​a multi-layer interchange, comprising a receiving shaft (18) corresponding to a receiving tunnel door (2), characterized in that: The receiving well (18) is provided with a transverse track group and a longitudinal track group; the transverse track group corresponds to the receiving tunnel door (2); the longitudinal track group and the transverse track group are coplanar and vertically arranged; a mobile platform (12) is provided on the longitudinal track group; a steel rail (13) is provided on the mobile platform (12); the steel rail (13) and the transverse track group are arranged at the same height; the pipe jacking machine uses the mobile platform (12) to complete the transfer from the transverse track group to the longitudinal track group.

2. The bidirectional translation system of a tunnel boring machine in a narrow area of ​​a multi-layer interchange according to claim 1 is characterized in that: One end of the longitudinal track group corresponds to the transverse track group, and the other end is set as a hoisting area (14). After exiting the hole, the pipe jacking machine enters the steel rail (13) on the mobile platform (12) along the transverse track group under the action of the driving component, and the mobile platform (12) carrying the pipe jacking machine moves along the longitudinal track group to the hoisting area (14) under the action of the driving component.

3. The bidirectional translation system of a tunnel boring machine in a narrow area of ​​a multi-layer interchange according to claim 2 is characterized by: The driving assembly comprises a pushing oil cylinder and a rail clamp, and the rail clamp provides a pushing reaction force support for the pushing oil cylinder.

4. The bidirectional translation system of a tunnel boring machine in a narrow area of ​​a multi-layer interchange according to claim 1 is characterized in that: The receiving well (18) is an L-shaped foundation pit, a compacted cushion layer (15) is laid in the L-shaped foundation pit, and the transverse track group and the longitudinal track group are both arranged on the compacted cushion layer (15).

5. The bidirectional translation system for a tunnel boring machine in a narrow area of ​​a multi-layer interchange according to any one of claims 1 to 4, characterized in that: The transverse track group comprises a transverse concrete cushion layer (6), a plurality of transverse strip bases (7) are arranged on the transverse concrete cushion layer (6), and a plurality of transverse steel rails (8) arranged in parallel are arranged on the transverse strip bases (7).

6. The bidirectional translation system of a tunnel boring machine in a narrow area of ​​a multi-layer interchange according to claim 5 is characterized in that: The transverse steel rail (8) is arranged along the exit direction of the pipe jacking machine, and the height of the transverse steel rail (8) is consistent with the bottom elevation of the receiving tunnel door (2).

7. The bidirectional translation system of a tunnel boring machine in a narrow area of ​​a multi-layer interchange according to claim 6 is characterized by: The longitudinal track group comprises a longitudinal concrete cushion layer (9), a plurality of longitudinal strip bases (10) are arranged on the longitudinal concrete cushion layer (9), a plurality of longitudinal steel rails (11) arranged in parallel are arranged on the longitudinal strip bases (10), a mobile platform (12) is arranged on the longitudinal steel rails (11), and the steel rails (13) are arranged at the same height and in parallel with the transverse steel rails (8).

8. The bidirectional translation system of a tunnel boring machine in a narrow area of ​​a multi-layer interchange according to claim 7 is characterized in that: The movable platform (12) is a thick steel plate; and a friction reducer is provided between the longitudinal steel rail (11) and the movable platform (12).

9. The bidirectional translation system of a tunnel boring machine in a narrow area of ​​a multi-layer interchange according to claim 7 or 8, characterized in that: The longitudinal concrete cushion layer (9) is lower than the transverse concrete cushion layer (6); when the steel rail (13) and the transverse steel rail (8) are butt-jointed, a rail clamp is used for butt-jointing and fixing.

10. The bidirectional translation system of a tunnel boring machine in a narrow area of ​​a multi-layer interchange according to claim 1, characterized in that: The receiving well (18) is surrounded by a receiving well retaining wall (3).

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