Support structure for road pipe gallery foundation construction

Abstract

The application relates to the technical field of municipal pipe gallery construction, and discloses a supporting structure for road pipe gallery foundation construction, which comprises a plurality of steel sheet piles arranged on both sides of a foundation pit, an I-shaped steel arranged on the steel sheet piles, and a plurality of supporting pipes arranged between the two I-shaped steels; the supporting structure further comprises a reinforcing pipe arranged on the supporting pipe, a lateral supporting rod arranged on the reinforcing pipe, and a fixing piece for fixing the lateral supporting rods on the adjacent two reinforcing pipes; the application can reduce the bending deformation of the steel pipe and improve the lateral supporting force of the pipe gallery construction supporting structure.

Description

Technical Field

[0001] This application relates to the technical field of municipal utility tunnel construction, and in particular to a support structure for the foundation construction of road utility tunnels. Background Technology

[0002] Road utility tunnels refer to underground passages built in cities. They are mainly used to centrally lay various municipal pipelines, such as power, communication, water supply and drainage pipelines. Compared with the traditional direct burial method, the unified construction of integrated utility tunnels can reduce the area occupied by pipelines on roads, and at the same time, it can provide unified protection for pipelines and reduce the risk of damage from the outside world.

[0003] The construction process of utility tunnels generally includes steps such as excavation of the foundation pit, erection of support, and construction of the tunnel body. During the erection of support, sheet piles, I-beams, and steel support pipes are generally used to form a support structure. Sheet piles are set along the excavation direction to form retaining walls on both sides of the foundation pit. I-beams are fixed inside the sheet piles to connect them into a whole. The two ends of the steel support pipes are abutted and supported between the I-beams on both sides, and multiple pipes are set at intervals along the excavation direction of the foundation pit to form a support.

[0004] Regarding the aforementioned technologies, this conventional support method only considers axial support requirements and lacks effective lateral support. When the axial pressure is large, due to the lack of lateral restraint, the steel pipe is prone to bending deformation, especially in the middle of the steel pipe. This bending deformation will seriously affect the stability of the support structure, reduce its support capacity for the pipe gallery foundation, and may even cause safety hazards, threatening the normal use of the road pipe gallery and the safety of the surrounding environment. Utility Model Content

[0005] In order to reduce the problem of bending deformation of steel pipes and improve the lateral support force of the support structure for the construction of utility tunnels, this application provides a support structure for the foundation construction of road utility tunnels.

[0006] This application provides a support structure for the foundation construction of a road utility tunnel, employing the following technical solution: A support structure for the foundation construction of a road utility tunnel includes several sheet piles set on both sides of the foundation pit, I-beams set on the sheet piles, and several support pipes set between two of the I-beams. It also includes a reinforcing tube disposed on the supporting tube, a lateral support rod disposed on the reinforcing tube, and a fastener for connecting and fixing the lateral support rods on two adjacent reinforcing tubes to each other.

[0007] By adopting the above technical solutions, steel sheet piles, I-beams, and support pipes can support the foundation pit for road utility tunnel construction. Reinforcing pipes can enhance the structural strength of the support pipes, and lateral support rods and fasteners can connect and fix adjacent reinforcing pipes, further improving the overall stability of the support structure.

[0008] Optionally, the reinforcing tube includes a first half-tube, a second half-tube, and a connector. The connector is used to clamp and fix the first half-tube and the second half-tube to the outside of the supporting tube, and the inner arc surfaces of the first half-tube and the second half-tube are adapted to the side wall of the supporting tube.

[0009] By adopting the above technical solution, it is convenient to install and disassemble the reinforcing tube, and it can make the reinforcing tube and the support tube fit tightly together, thereby enhancing the reinforcement effect on the support tube.

[0010] Optionally, both sides of the first half-tube and the second half-tube are provided with side edges, and the connector includes a connecting bolt and a connecting nut. The connecting bolt can pass through the side edges of the first half-tube and the second half-tube in sequence and be threadedly connected to the connecting nut.

[0011] By adopting the above technical solution, the first and second halves of the tube can be easily and quickly joined and fixed to the outside of the support tube, and the connection is firm, making it easy to install and disassemble.

[0012] Optionally, multiple sets of the connecting bolts and the connecting nuts are spaced apart along the length of the side edge.

[0013] By adopting the above technical solution, multiple sets of connecting bolts and connecting nuts are spaced apart along the length of the side, which can more firmly bind and fix the first half-pipe and the second half-pipe to the outside of the support pipe, thereby enhancing the stability and reliability of the connection between the reinforcing pipe and the support pipe.

[0014] Optionally, a fixing plate is provided at the end of the lateral support rod. The fixing component includes a fixing bolt and a fixing nut. The lateral support rod is respectively provided on the side wall of the first half tube and the second half tube. When the reinforcing tube is fixed to the support tube, the fixing plates on two adjacent lateral support tubes are arranged opposite to each other. The fixing plate has several openings in the circumferential direction for the fixing bolt to pass through. The fixing bolt can pass through two fixing plates in sequence and be threadedly connected to the fixing nut.

[0015] By adopting the above technical solution, the connection and fixation of adjacent lateral support rods can be achieved by using a fixing plate, fixing bolts and fixing nuts, which can enhance the stability and integrity of the lateral support structure, facilitate the assembly and disassembly of the support structure, and improve construction efficiency.

[0016] Optionally, the length of the lateral support rod is adjustable.

[0017] By adopting the above technical solution, the length of the lateral support rod can be flexibly adjusted according to actual construction needs to adapt to different support spacing and support angle, thereby enhancing the applicability and flexibility of the support structure.

[0018] Optionally, the lateral support rod includes a first rod and a second rod. One end of the first rod is fixed to the first half-tube or the second half-tube, and the other end of the first rod is inserted into the second rod and threadedly connected to the second rod. The end of the second rod away from the first rod is connected to the fixing plate.

[0019] By adopting the above technical solution, the length of the lateral support rod can be flexibly adjusted to meet the connection requirements of reinforcing tubes with different spacing, thereby improving the installation flexibility and adaptability of the support structure.

[0020] Optionally, mounting seats are provided on the side walls of both the first and second half-tubes, and the lateral support rod is fixed to the mounting seats by a mounting component.

[0021] By adopting the above technical solution, the installation of the lateral support rod is more stable and reliable, and the installation and disassembly of the lateral support rod are facilitated, thereby improving construction efficiency.

[0022] Optionally, the mounting component includes a mounting block, a mounting groove, and a mounting bolt. The mounting block is connected to the lateral support rod, and a mounting groove is formed on the surface of the mounting base. The mounting block can be inserted into the mounting groove, and the mounting bolt can pass through the mounting base and be threadedly connected to the mounting block.

[0023] By adopting the above technical solution, the mounting block can be easily and quickly fixed on the mounting base, thereby quickly fixing the lateral support rod and improving construction efficiency.

[0024] In summary, this application includes at least one of the following beneficial effects: 1. The reinforcing tube is set on the supporting tube, and the lateral support rod is set on the reinforcing tube. The fastener connects and fixes the lateral support rods on two adjacent reinforcing tubes to each other, which can provide lateral constraint to the supporting tube and resist the lateral force brought by the axial pressure, thereby enhancing the lateral stability of the support structure. 2. The reinforcing pipe consists of a first half-pipe, a second half-pipe, and a connector. The connector holds the first half-pipe and the second half-pipe together and fixes them to the outside of the support pipe, which facilitates installation and disassembly and improves construction efficiency. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the reinforced tube; Figure 3 yes Figure 2 A magnified structural diagram at point A in the diagram.

[0026] Explanation of reference numerals in the attached drawings: 1. Sheet pile; 2. I-beam; 3. Support pipe; 4. Reinforcing pipe; 41. First half-pipe; 42. Second half-pipe; 43. Connector; 431. Connecting bolt; 432. Connecting nut; 5. Lateral support rod; 51. Fixing plate; 52. First rod; 53. Second rod; 6. Fixing component; 61. Fixing bolt; 62. Fixing nut; 7. Mounting base; 8. Mounting component; 81. Mounting block; 82. Mounting groove; 83. Mounting bolt. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] This application discloses a support structure for the foundation construction of a road utility tunnel. (Refer to...) Figure 1 The supporting structure includes several sheet piles 1 set on both sides of the foundation pit, H-beams 2 set on the sheet piles 1, and several support pipes 3 set between two H-beams 2. The sheet piles 1 are driven into the soil on both sides of the foundation pit in a vertical direction to form a retaining wall; the H-beams 2 are fixed to the inside of the sheet piles 1 to connect the sheet piles 1 into a whole; the support pipes 3 are connected between two H-beams 2 and are set at intervals along the excavation direction of the foundation pit.

[0029] Reference Figure 1 and Figure 2 In this embodiment, the support structure further includes a reinforcing tube 4 on the support tube 3, lateral support rods 5 disposed on the reinforcing tube 4, and a fixing member 6 that connects and fixes the lateral support rods 5 on two adjacent reinforcing tubes 4. The reinforcing tube 4 is mounted on the support tube 3, and the lateral support rods 5 are mounted on the reinforcing tube 4. The lateral support rods 5 on two adjacent reinforcing tubes 4 are connected and fixed by the fixing member 6. Thus, the lateral support rods 5 connected between the two support tubes 3 provide lateral constraint to the support tube 3, resisting the lateral force caused by axial pressure, thereby enhancing the lateral stability of the support structure and reducing the risk of bending deformation of the support tube 3.

[0030] Reference Figure 2 and Figure 3 In this embodiment, the support tube 3 is a circular tube; the reinforcing tube 4 includes a first half-tube 41, a second half-tube 42, and a connector 43. The first half-tube 41 and the second half-tube 42 are typically made of steel and are semi-circular in shape. Their inner arc surfaces are adapted to the outer sidewalls of the support tube 3, allowing them to fit tightly against the outside of the support tube 3. In an optional embodiment, a rubber buffer pad can be fixed to the inner sidewalls of the first half-tube 41 and the second half-tube 42 to increase the friction between the support tube 3 and the reinforcing tube 4, while also providing a buffering effect.

[0031] Both sides of the first half-tube 41 and the second half-tube 42 are fixed with side edges by welding or integral molding, which are elongated and facilitate the installation and fixation of the connector 43. The connector 43 includes connecting bolts 431 and connecting nuts 432. Multiple sets of connecting bolts 431 and connecting nuts 432 are arranged at intervals along the length of the side edges, and corresponding openings are made on the side edges for the connecting bolts 431 to pass through. The connecting bolts 431 can pass through the side edges of the first half-tube 41 and the second half-tube 42 in sequence and are threadedly connected to the connecting nuts 432, thereby clamping and fixing the first half-tube 41 and the second half-tube 42 to the outside of the support tube 3. This connection method allows the reinforcing tube 4 to be firmly fixed to the support tube 3, providing additional support and constraint for the support tube 3. In this embodiment, the end of the lateral support rod 5 is fixedly connected to a fixing plate 51 by welding or other means. Lateral support rods 5 are respectively installed on the side walls of the first half-pipe 41 and the second half-pipe 42. In actual construction, to facilitate the connection of the lateral support rods 5, the first half-pipe 41 and the second half-pipe 42 are arranged to hug each other on the left and right sides of the support pipe 3, that is, their connection is located at the upper and lower ends. When the reinforcing pipe 4 is fixed to the support pipe 3, the fixing plates 51 on the two adjacent lateral support pipes 3 are arranged opposite each other. The fixing member 6 includes fixing bolts 61 and fixing nuts 62. The fixing plate 51 is preferably a circular metal plate. The fixing plate 51 has several openings on its circumference for the fixing bolts 61 to pass through. The fixing bolts 61 can pass through two fixing plates 51 in sequence and be threadedly connected to the fixing nuts 62, thereby connecting and fixing the two adjacent lateral support rods 5 together. Optionally, the openings on the fixing plate 51 can accommodate the rod part of the fixing bolt 61, thereby facilitating the insertion of the fixing bolt 61.

[0032] In an optional embodiment, the lateral support rod 5 is configured as a telescopic structure with adjustable length to accommodate different spacings between the support tubes 3. Specifically, the lateral support rod 5 includes a first rod 52 and a second rod 53. One end of the first rod 52 is fixed to the first half-tube 41 or the second half-tube 42, and the other end of the first rod 52 is inserted into the second rod 53. Simultaneously, the outer wall of the first rod 52 is threaded, and the second rod 53 has an insertion hole for the first rod 52, with internal threads inside the hole, thus connecting the first rod 52 and the second rod 53 threadedly. The end of the second rod 53 furthest from the first rod 52 is fixedly connected to the fixing plate 51 by welding or other means. By rotating the second rod 53, the overall length of the lateral support rod 5 can be changed to adapt to different construction needs and support conditions. It should be noted that after rotating the second rod 53, the openings of the two opposing fixing plates 51 need to be aligned. The two adjacent fixing plates 51 only need to be brought close together to form a connection using fixing bolts 61 and fixing nuts 62.

[0033] In other embodiments, the lateral support rod 5 can be adjusted in length by means of bolts and multiple openings, in addition to the threaded telescopic structure.

[0034] Reference Figure 2 and Figure 3 Furthermore, mounting seats 7 are fixedly provided on the side walls of the first half-tube 41 and the second half-tube 42. The mounting seats 7 are typically block-shaped structures, and their material is the same as that of the half-tubes. To improve the stability of the connection, the outer side wall of the mounting seat 7 corresponding to the connection between it and the first half-tube 41 or the second half-tube 42 is set as an arc-shaped structure, and fixed by welding or bolts. The lateral support rod 5 is fixed to the mounting seat 7 by a mounting component 8. The mounting component 8 includes a mounting block 81, a mounting groove 82, and a mounting bolt 83. The mounting block 81 is fixedly connected to the end of the first rod 52. The mounting seat 7 has a mounting groove 82 on its surface, and the mounting block 81 can be inserted into the mounting groove 82. Preferably, the mounting block 81 is a rectangular block, and the mounting groove 82 is a corresponding rectangular groove, so that the mounting block 81 can be restricted from rotating when inserted. The mounting bolt 83 can pass through the side wall of the mounting seat 7 and be threadedly connected to the mounting block 81. The mounting seat 7 and the mounting block 81 are respectively provided with pre-drilled openings for the mounting bolt 83 to pass through and threaded holes for its threaded connection. This installation method allows the lateral support rod 5 to be detachably installed on the reinforcing tube 4, which is convenient for transportation and easy for alignment and assembly.

[0035] The implementation principle of a support structure for road utility tunnel foundation construction according to an embodiment of this application is as follows: During the construction of the utility tunnel, steel sheet piles 1 are first inserted on both sides of the excavated foundation pit, and then I-beams 2 are fixed on the steel sheet piles 1. Next, support pipes 3 are fixed between the I-beams 2 on both sides of the foundation pit. Then, the first half-pipe 41 and the second half-pipe 42 are joined to the support pipe 3 on the left and right sides and locked with connecting bolts 431 and connecting nuts 432. Next, the mounting block 81 on the first rod 52 is inserted into the mounting groove 82 and locked with mounting bolts 83. Finally, the second rod 53 is rotated so that the two adjacent fixing discs 51 are aligned and connected and locked with fixing bolts 61 and fixing nuts 62, thus completing the installation of the entire support structure.

[0036] This embodiment establishes a basic support system using sheet piles 1, I-beams 2, and support pipes 3, providing axial support for the utility tunnel foundation. Based on this, reinforcing pipes 4, lateral support rods 5, and fasteners 6 are added, forming an effective lateral support structure. The reinforcing pipes 4 are fixed to the support pipes 3, providing additional constraint. The lateral support rods 5 and fasteners 6 connect adjacent reinforcing pipes 4, enhancing the lateral stability of the support structure. When axial pressure is high, the lateral support structure can resist lateral forces, reducing the risk of bending deformation of the support pipes 3, improving the stability and safety of the support structure, and ensuring the normal construction and use of the utility tunnel.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A support structure for the foundation construction of a road utility tunnel, characterized in that: It includes several sheet piles (1) set on both sides of the foundation pit, I-beams (2) set on the sheet piles (1), and several support pipes (3) set between two I-beams (2). It also includes a reinforcing tube (4) disposed on the supporting tube (3), a lateral support rod (5) disposed on the reinforcing tube (4), and a fastener (6) for connecting and fixing the lateral support rods (5) on two adjacent reinforcing tubes (4) to each other.

2. The support structure for road utility tunnel foundation construction according to claim 1, characterized in that: The reinforcing tube (4) includes a first half tube (41), a second half tube (42) and a connector (43). The connector (43) is used to hold and fix the first half tube (41) and the second half tube (42) to the outside of the support tube (3). The inner arc surfaces of the first half tube (41) and the second half tube (42) are adapted to the side wall of the support tube (3).

3. The support structure for road utility tunnel foundation construction according to claim 2, characterized in that: Both sides of the first half-tube (41) and the second half-tube (42) are provided with side edges. The connector (43) includes a connecting bolt (431) and a connecting nut (432). The connecting bolt (431) can pass through the side edges of the first half-tube (41) and the second half-tube (42) in sequence and be threadedly connected to the connecting nut (432).

4. The support structure for road utility tunnel foundation construction according to claim 3, characterized in that: Multiple sets of the connecting bolts (431) and the connecting nuts (432) are spaced apart along the length of the side edge.

5. A support structure for road utility tunnel foundation construction according to claim 2, characterized in that: The lateral support rod (5) is provided with a fixing plate (51) at its end. The fixing member (6) includes a fixing bolt (61) and a fixing nut (62). The lateral support rod (5) is respectively provided on the side wall of the first half tube (41) and the second half tube (42). When the reinforcing tube (4) is fixed on the support tube (3), the fixing plates (51) on the two adjacent lateral support tubes (3) are arranged opposite to each other. The fixing plate (51) has several openings in the circumferential direction for the fixing bolt (61) to pass through. The fixing bolt (61) can pass through the two fixing plates (51) in sequence and be threadedly connected to the fixing nut (62).

6. The support structure for road utility tunnel foundation construction according to claim 5, characterized in that: The length of the lateral support rod (5) is adjustable.

7. A support structure for road utility tunnel foundation construction according to claim 6, characterized in that: The lateral support rod (5) includes a first rod (52) and a second rod (53). One end of the first rod (52) is fixed to the first half tube (41) or the second half tube (42). The other end of the first rod (52) is inserted into the second rod (53) and threadedly connected to the second rod (53). The end of the second rod (53) away from the first rod (52) is connected to the fixing plate (51).

8. A support structure for road utility tunnel foundation construction according to claim 6, characterized in that: Mounting seats (7) are provided on the side walls of the first half-tube (41) and the second half-tube (42), and the lateral support rod (5) is fixed to the mounting seat (7) by the mounting component (8).

9. A support structure for road utility tunnel foundation construction according to claim 8, characterized in that: The mounting component (8) includes a mounting block (81), a mounting groove (82), and a mounting bolt (83). The mounting block (81) is connected to the lateral support rod (5). The mounting seat (7) has a mounting groove (82) on its surface. The mounting block (81) can be inserted into the mounting groove (82). The mounting bolt (83) can pass through the mounting seat (7) and be threadedly connected to the mounting block (81).

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