Adjustable base for arc-shaped support of shield pipe gallery

Abstract

The adjustable base for the arc-shaped support of the shield pipe gallery comprises a fixing part installed on the ground and used for supporting the arc-shaped support, a connecting part used for being connected with the arc-shaped support is arranged on the fixing part, and an adjusting part used for leveling the connecting part is arranged on the fixing part; the adjusting part comprises a plurality of adjusting rods connected to the connecting part and adjusting nuts matched with the adjusting rods and used for adjusting the flatness of the connecting part. The connecting part comprises a supporting plate and a connecting piece arranged on the supporting plate and used for being connected with the arc-shaped support. Compared with the prior art, the connecting part is leveled through cooperation of the adjusting rods of the adjusting part and the adjusting nuts, so that the flatness of the whole base is adjusted, the installation flatness of the base is guaranteed, and then the installation accuracy of the arc-shaped support is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an adjustable base for an arc-shaped support of a shield tunnel. Background Art

[0002] The rapid advancement of my country's urbanization process has put higher requirements on the construction and maintenance of urban supporting municipal infrastructure, and the construction of integrated pipe corridors is also developing continuously. The demand for intensive laying of urban engineering pipelines by building integrated pipe corridors in old urban areas has become more urgent. In recent years, there have been many cases of planning and construction of integrated pipe corridors in old urban areas. Analysis of these cases shows that the use of traditional open-cut methods to build integrated pipe corridors in old urban areas is often difficult due to traffic impacts, pipeline relocation and other issues. In integrated pipe corridor projects, shield tunneling is one of the common dark excavation methods.

[0003] To solve the above problems, the Chinese patent application number 202320305288.8 discloses a shield tunnel secondary structure construction template support. The above disclosed template support includes a top template, a side template connected to the top template and arranged on both sides of the top template, and a plurality of parallel supporting frames; the supporting frame includes a vertical steel pillar, a top crossbar arranged on the top of the steel pillar, a bottom crossbar arranged at the bottom of the steel pillar, and an arc-shaped frame connecting the bottom crossbar and the top crossbar; the top crossbar is connected to the top template support and fixes the top template; the arc-shaped frame is connected to the side template support and fixes the side template. The Chinese patent application number 202121823075.1 discloses an internal structure for a shield tunnel. The above disclosed internal structure includes a floor slab, a crossbeam arranged on the floor slab, a column connecting the upper crossbeam and the bottom foundation, and a cantilever plate connected to the crossbeam. The crossbeam is a heterogeneous beam, and the cantilever plates are symmetrically arranged on both sides of the floor slab. The internal structure of the shield tunnel includes the above-mentioned floor slabs, beams, columns and bottom foundation.

[0004] In the above-disclosed prior art, when installing the bracket, the bracket is directly fixed to the shear wall using expansion bolts, and each bracket is fixed separately. There are a large number of brackets and many fixing points are required, which can easily cause damage to the shear wall and further destroy the structural strength of the shear wall. At the same time, the above-mentioned installation method is time-consuming and labor-intensive, and the installation efficiency is low. Utility Model Content

[0005] The utility model aims to overcome the defects in the above-mentioned prior art and provide an adjustable base for the arc support of the shield tunnel, which does not need to fix the arc support on the shear wall and will not cause damage to the wall, while reducing the number of fixing points and reducing the difficulty of installation.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: an adjustable base for an arc-shaped support of a shield tunnel, comprising a fixed part installed on the ground for supporting the arc-shaped support, the fixed part is provided with a connecting part for connecting the arc-shaped support, and the fixed part is provided with an adjusting part for leveling the connecting part; the adjusting part comprises a plurality of adjusting rods connected to the connecting part and an adjusting nut matched with the adjusting rods for adjusting the flatness of the connecting part, and the connecting part comprises a support plate and a connecting piece arranged on the support plate for connecting the arc-shaped support.

[0007] As a preferred solution of the utility model, the fixing part includes a fixing plate for installing the adjusting part, and the fixing plate is provided with a plurality of mounting holes for installing the adjusting rod.

[0008] As a preferred solution of the utility model, the mounting hole is a blind hole structure, and an internal thread for connecting the adjusting rod is provided on the inner wall of the mounting hole.

[0009] As a preferred solution of the utility model, fixing holes for installing the fixing plate are provided at the corners of the fixing plate.

[0010] As a preferred solution of the utility model, the fixing hole is a through hole structure.

[0011] As a preferred solution of the utility model, adjustment holes for connecting the adjustment rods are formed at the corners of the support plate, and the adjustment rods pass through the adjustment holes and are connected to the support plate.

[0012] As a preferred solution of the utility model, an external thread for connecting the adjusting nut is formed on the adjusting rod, and the external thread of the adjusting rod is matched with the internal thread of the mounting hole.

[0013] As a preferred solution of the utility model, the adjusting nuts are arranged on the upper and lower sides of the support plate, and the two adjusting nuts are in contact with the support plate.

[0014] As a preferred solution of the utility model, two connecting members are provided, the two connecting members are arranged in parallel in the middle of the support plate, and an installation space for installing the arc bracket is formed between the two connecting members.

[0015] As a preferred solution of the utility model, the connecting piece is provided with a connecting hole for connecting the arc-shaped bracket.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. By setting the fixing part on the ground and installing the arc bracket on the connecting piece of the connecting part, the fixing point of the arc bracket is moved from the shear wall to the ground, and there is no need to drill holes in the shear wall, so as not to cause damage to the shear wall, thereby ensuring the structural strength of the shear wall and the safety of the shield structure, reducing the difficulty of construction and improving the efficiency of the arc bracket installation. In addition, the connection part is leveled by the cooperation of several adjusting rods and adjusting nuts of the adjusting part, thereby adjusting the flatness of the entire base, ensuring the flatness of the base installation, and then ensuring the accuracy of the arc bracket installation;

[0018] 2. Furthermore, by setting the adjusting nuts on the upper and lower sides of the support plate, after the adjustment is completed, tighten the adjusting nuts to make them tightly abut against the support plate, thereby ensuring the stability of the adjusting nuts, thereby ensuring that the adjusting nuts will not be sent, ensuring that the support plate is in a stable state, ensuring that the flatness of the base will not change, and thus ensuring the flatness of the arc bracket installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the fixed part;

[0021] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0022] Figure 4 is a top view of the connection portion;

[0023] Figure 5 This is a side view of the connection

[0024] Figure numerals: fixing part 1, fixing plate 101, fixing hole 1011, mounting hole 1012, adjusting part 2, adjusting rod 201, adjusting nut 202, connecting part 3, supporting plate 301, adjusting hole 3011, connecting piece 302, connecting hole 3021, mounting space 3022. DETAILED DESCRIPTION

[0025] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-Figure 5As shown, an adjustable base for an arc-shaped support of a shield tunnel includes a fixing portion 1 installed on the ground for supporting the arc-shaped support, a connecting portion 3 for connecting the arc-shaped support is provided on the fixing portion 1, and an adjusting portion 2 for leveling the connecting portion 3 is provided on the fixing portion 1; the adjusting portion 2 includes a plurality of adjusting rods 201 connected to the connecting portion 3 and an adjusting nut 202 matched with the adjusting rods 201 for adjusting the flatness of the connecting portion 3, and the connecting portion 3 includes a supporting plate 301 and a connecting piece 302 provided on the supporting plate 301 for connecting the arc-shaped support.

[0027] Furthermore, the fixing part 1 is fixedly connected to the ground, and the area of ​​the fixing part 1 is larger than the area of ​​the connecting part 3, mainly to increase the contact area with the ground and reduce the risk of the ground being crushed; the connecting part 3 is connected to the arc-shaped bracket. In order to ensure the flatness of the installation of the arc-shaped bracket, a number of adjusting rods 201 and adjusting nuts 202 are fine-tuned to make them on the same plane, thereby ensuring the flatness of the base, and then ensuring the flatness of the installation of the arc-shaped bracket, and the fine-tuning range is: -30mm~30mm.

[0028] The fixing part 1 includes a fixing plate 101 for installing the adjusting part 2, and a plurality of mounting holes 1012 for installing the adjusting rod 201 are provided on the fixing plate 101. Furthermore, the fixing plate 101 is a rectangular structure, and the fixing plate 101 is installed on the ground. The adjusting rod 201 is connected to the fixing plate 101 through the mounting holes 1012. Specifically, the mounting holes 1012 are blind hole structures, and the inner wall of the mounting holes 1012 is provided with internal threads for connecting the adjusting rod 201. An external thread for connecting the adjusting nut 202 is formed on the adjusting rod 201, and the external thread of the adjusting rod 201 is adapted to the internal thread of the mounting holes 1012. The external thread of the adjusting rod 201 is threadedly connected to the internal thread of the mounting holes 1012, thereby ensuring that the adjusting rod 201 remains stable on the fixing plate 101. In addition, by setting the mounting holes 1012 as blind hole structures, it is ensured that the adjusting rod 201 does not extend out from the bottom of the fixing plate 101.

[0029] Fixing holes 1011 for installing the fixing plate 101 are provided at the corners of the fixing plate 101. Furthermore, the fixing holes 1011 are arranged at the four corners of the fixing plate 101, and the fixing holes 1011 are through-hole structures. The fixing plate 101 is installed and fixed on the ground by passing bolts through the fixing holes 1011, thereby ensuring the stability of the fixing plate 101 after installation.

[0030] Adjustment holes 3011 for connecting the adjustment rod 201 are formed at the corners of the support plate 301, and the adjustment rod 201 is connected to the support plate 301 through the adjustment hole 3011. Furthermore, the support plate 301 is a rectangular structure, and the adjustment holes 3011 are arranged at the four corners of the support plate 301. The adjustment rod 201 is fixed to the support plate 301 by the adjustment nut 202.

[0031] Specifically, the adjusting nuts 202 are arranged on the upper and lower sides of the support plate 301, and the two adjusting nuts 202 are abutted against the support plate 301. By adjusting the adjusting nuts 202 located at the bottom of the support plate 301 on the four adjusting rods 201, the support plate 301 is placed in a horizontal state, and then the four adjusting nuts 202 located on the upper side of the support plate 301 are tightened to fix the support plate 301 to the adjusting rod 201, thereby ensuring the flatness of the support after installation and ensuring the installation accuracy of the arc bracket.

[0032] There are two connecting members 302, and the two connecting members 302 are arranged in parallel in the middle of the support plate 301, and an installation space 3022 for installing the arc bracket is formed between the two connecting members 302. Furthermore, a connecting hole 3021 for connecting the arc bracket is provided on the connecting member 302, and the two connecting members 302 are arranged vertically, the arc bracket is arranged in the installation space 3022, and a bolt is passed through the connecting hole 3021 to connect with the arc bracket, so as to fix the arc bracket on the connecting member 302.

[0033] Installation method of base and arc bracket:

[0034] Step 1: Assemble the arc bracket and the base: Before installing the arc bracket base, the arc bracket and the base must be assembled and then installed. The arc bracket and the base are assembled and fixed with bolts;

[0035] Specifically, the arc-shaped bracket is installed in the installation space 3022, and the arc-shaped bracket is connected and fixed to the connecting member 302 by bolts.

[0036] Step 2: Adjust the arc bracket: After assembling the arc bracket and the arc bracket base, use a laser to adjust the center line of the arc bracket base and the center line of the column base to a horizontal line;

[0037] After the position of the arc-shaped bracket is determined, the support plate 301 on the base is adjusted to adjust the flatness of the arc-shaped bracket;

[0038] Specifically, the four adjusting nuts 202 on the lower side of the support plate 301 are adjusted so that the support plate 301 is in a horizontal position, and then the four adjusting nuts 202 on the upper side of the support plate 301 are tightened, so that the support plate 301 and the adjusting rod 201 are fixed.

[0039] Step 3: Fix the arc bracket base: After leveling and determining the position of the arc bracket base, use a drilling machine to drill holes according to the positions of the fixing holes 1011 of the base;

[0040] Step 4. After drilling the corresponding holes, use an air compressor to blow out the debris in the holes. After cleaning the holes, drill holes according to the diameter and depth of the bolt specifications, and place the chemical hose into the cleaned holes according to the direction; use an electric tool to turn the bolt into the hole. The installation depth is 19d, d is the diameter of the hole, and the rotation speed should not be greater than 750 rpm; because the temperature of the underground integrated pipeline corridor is between 10 and 20°C in summer, when the substrate temperature is 10°C to 25°C, the bolt installation time is 15 minutes, the initial setting time is 35 to 50 minutes, and the curing time is 4 hours. After curing, tighten the gasket and nut with an electric wrench.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0042] Although the following terms are used more frequently in this article: fixing part 1, fixing plate 101, fixing hole 1011, mounting hole 1012, adjusting part 2, adjusting rod 201, adjusting nut 202, connecting part 3, supporting plate 301, adjusting hole 3011, connecting member 302, connecting hole 3021, mounting space 3022, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An adjustable base for an arc-shaped support of a shield tunnel gallery, characterized in that: The invention comprises a fixing part (1) installed on the ground for supporting an arc-shaped bracket, the fixing part (1) is provided with a connecting part (3) for connecting the arc-shaped bracket, and the fixing part (1) is provided with an adjusting part (2) for leveling the connecting part (3); the adjusting part (2) comprises a plurality of adjusting rods (201) connected to the connecting part (3) and an adjusting nut (202) matched with the adjusting rods (201) for adjusting the flatness of the connecting part (3); the connecting part (3) comprises a supporting plate (301) and a connecting piece (302) provided on the supporting plate (301) for connecting the arc-shaped bracket.

2. The adjustable base for the arc-shaped support of a shield tunnel gallery according to claim 1, characterized in that: The fixing part (1) comprises a fixing plate (101) for mounting the adjusting part (2), and the fixing plate (101) is provided with a plurality of mounting holes (1012) for mounting the adjusting rod (201).

3. The adjustable base for the arc-shaped support of a shield tunnel gallery according to claim 2, characterized in that: The mounting hole (1012) is a blind hole structure, and an internal thread for connecting the adjustment rod (201) is provided on the inner wall of the mounting hole (1012).

4. The adjustable base for the arc-shaped support of a shield tunnel gallery according to claim 2, characterized in that: Fixing holes (1011) for installing the fixing plate (101) are provided at the corners of the fixing plate (101).

5. The adjustable base for the arc-shaped support of a shield tunnel gallery according to claim 4, characterized in that: The fixing hole (1011) is a through hole structure.

6. The adjustable base for the arc-shaped support of a shield tunnel gallery according to claim 1, characterized in that: An adjustment hole (3011) for connecting the adjustment rod (201) is formed at a corner of the support plate (301), and the adjustment rod (201) passes through the adjustment hole (3011) to be connected to the support plate (301).

7. The adjustable base for the arc-shaped support of a shield tunnel gallery according to claim 3, characterized in that: The adjusting rod (201) is formed with an external thread for connecting with the adjusting nut (202), and the external thread of the adjusting rod (201) is matched with the internal thread of the mounting hole (1012).

8. The adjustable base for the arc-shaped support of a shield tunnel gallery according to claim 1, characterized in that: The adjusting nuts (202) are arranged on the upper and lower sides of the support plate (301), and the two adjusting nuts (202) are in contact with the support plate (301).

9. The adjustable base for the arc-shaped support of a shield tunnel gallery according to claim 1, characterized in that: Two connecting members (302) are provided, and the two connecting members (302) are arranged in parallel in the middle of the support plate (301), and an installation space (3022) for installing the arc-shaped bracket is formed between the two connecting members (302).

10. The adjustable base for the arc-shaped support of a shield tunnel gallery according to claim 1, characterized in that: The connecting piece (302) is provided with a connecting hole (3021) for connecting the arc-shaped bracket.

Images