Steel structure base of earthwork exchange station in tunnel

Abstract

The utility model relates to the technical field of pipeline construction, in particular to a steel structure base of an earthwork exchange station in a tunnel. Comprising a short base used for being connected with a lifting machine and a long base used for being connected with a jack, each of the short base and the long base comprises a base top face, a base bottom face and a shifting side plate, the base bottom face is in an arc shape attached to the shape of a construction tunnel wall, a plurality of bolt holes are reserved, and the base bottom face is used for being connected with embedded bolts in the tunnel pipe wall; the sides, facing the center of the tunnel, of the short bases and the long bases are of open structures, the top faces and the bottom faces of the bases are connected through a plurality of vertical reinforcing plates, the shifting side plates are in bolt connection with connecting suites of the earth moving trolley when the bases shift, and the two ends of each shifting side plate are connected with triangular toggle plates for reinforcement. The structure is stable, and the stability in a complex tunnel environment is ensured; the design is simple, rapid mounting and dismounting are facilitated, and the construction time and labor cost are reduced; the position can be conveniently adjusted according to the construction progress and requirements, and the construction flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline construction, and particularly relates to a steel structure base of an earthwork exchange station in a tunnel. Background Technique

[0002] During the tunnel construction process, the treatment of earthwork is an important and complex link. In order to improve construction efficiency and safety, an earthwork exchange station is often set up in the tunnel to temporarily store and transfer the excavated earthwork materials. The structure and layout of the earthwork exchange station have an important impact on the smooth progress of the entire construction process, especially the design of its base and the shifting method of the exchange station.

[0003] Traditional earthwork exchange stations usually use concrete foundations or simple steel structures as bases. These designs have the following main problems: (1) Difficult construction: The concrete foundation requires a long pouring and curing process, with a long construction period and is not easy to disassemble and shift; while the simple steel structure base may have deficiencies in stability and bearing capacity. (2) Poor flexibility: Traditional bases often lack consideration for the need to shift. Once installed, it is difficult to adjust according to the changes in the construction progress and the tunnel excavation position, restricting construction flexibility and efficiency. (3) Potential safety hazards: In a narrow and enclosed environment such as a tunnel, the stability of the base directly affects the safety of the earthwork exchange station. If the base design is unreasonable, it may lead to safety accidents such as the overturning and collapse of the earthwork exchange station. To address the above challenges and improve the efficiency and safety of tunnel construction, it is particularly important to develop a steel structure base with high stability, easy installation, and easy shifting and its shifting method. Content of the Utility Model

[0004] Aiming at the deficiencies of the above-mentioned prior art, the utility model provides a steel structure base of an earthwork exchange station in a tunnel, which realizes the efficient, flexible, and safe operation of the earthwork exchange station, aims to provide reliable technical support for tunnel construction, and improves construction quality and efficiency.

[0005] The technical solution adopted by the utility model to achieve the above object is: A steel structure base of an earthwork exchange station in a tunnel, characterized in that it includes two short bases for connecting a lift and two long bases for connecting a jack. The two short bases are relatively connected to the tunnel entrance side of the tunnel, and the two long bases are relatively connected to the heading face side of the tunnel. The short bases and the long bases each include a base top surface, a base bottom surface, and a shifting side plate. The base bottom surface is an arc shape that fits the shape of the construction tunnel wall, with multiple bolt holes reserved for connecting with the embedded bolts in the tunnel pipe wall. The short bases and the long bases are open structures towards the tunnel center side. The base top surface and the base bottom surface are connected by multiple vertical reinforcing plates. The shifting side plates are bolted to the connection kit of the earthwork transport trolley during the base shifting, and both ends are connected with triangular elbow plates for reinforcement.

[0006] Holes for wires to pass through are reserved between the reinforcing plates.

[0007] The top surface of the base is connected to the lift column by bolts.

[0008] The embedded bolts are M20 high-strength chemical bolts. There are six short bases and eight long bases.

[0009] The base is entirely made of 10-mm steel plates. Jacks are connected to both sides of the top surface of the long base. The space reserved between the two jacks is for the hydraulic pump station and the electrical box.

[0010] The size of the short base is 1050*680*544 mm, the size of the long base is 2900*680*544 mm, and the height of the displacement side plate is 100 mm.

[0011] The utility model has the following characteristics: (1) Stable structure: It can bear the weight of a large amount of earthwork and the operating load of mechanical equipment, ensuring stability in a complex tunnel environment. (2) Convenient installation: Simple design, facilitating quick installation and disassembly, reducing construction time and labor costs. (3) Easy to displace: It can be conveniently adjusted in position according to the construction progress and requirements, adapting to the requirements of different construction stages and enhancing construction flexibility. Description of the Drawings

[0012] Figure 1 It is a side view of the short base structure of the utility model;

[0013] Figure 2 It is a front view of the short base structure of the utility model (connected to the lift);

[0014] Figure 3 It is a front view of the long base structure of the utility model;

[0015] Figure 4 It is a schematic diagram of the disassembly of the base of the utility model;

[0016] In the figure: 1. Short base; 2. Long base; 3. Top surface of the base; 4. Bottom surface of the base; 5. Displacement side plate; 6. Embedded bolt; 7. Earth-transporting trolley; 8. Triangular elbow plate; 9. Lift; 10. Jack; 11. Reinforcing plate; 12. Fine-tuning gasket; 13. Square wedge. Detailed Implementation Modes Embodiment

[0017] A steel structure base for an earthwork exchange station in a tunnel includes two short bases 1 for connecting a lift 9 and two long bases 2 for connecting jacks 10. The two short bases 1 are oppositely connected to the tunnel entrance side of the tunnel, and the two long bases 2 are oppositely connected to the heading face side of the tunnel, asFigures 1 - 3 As shown, both the short base 1 and the long base 2 include a base top surface 3, a base bottom surface 4, and a displacement side plate 5. The base bottom surface 4 is an arc that fits the shape of the construction tunnel wall, and a plurality of bolt holes are reserved for connecting with the embedded bolts 6 in the tunnel pipe wall. The short base 1 and the long base 2 are open structures on the tunnel center side. The base top surface 3 and the base bottom surface 4 are connected by a plurality of vertical reinforcement plates 11. The displacement side plate 5 is bolted to the connection kit of the soil transport trolley 7 during base displacement, and both ends are connected with triangular elbow plates 8 for reinforcement.

[0018] Holes for wires to pass through are reserved between the reinforcement plates 11.

[0019] The base top surface 3 is bolted to the column of the lift 9.

[0020] The embedded bolts 6 are M20 high-strength chemical bolts, with six for the short base 1 and eight for the long base 2.

[0021] The entire base is made of 10mm steel plates. Jacks 10 are connected to both sides of the base top surface 3 of the long base 2, and the space for the hydraulic pump station and the electrical box is reserved between the two jacks 10.

[0022] The size of the short base 1 is 1050*680*544mm, the size of the long base 2 is 2900*680*544mm, and the height of the displacement side plate 5 is 100mm.

[0023] The disassembly, assembly and displacement method of the present utility model:

[0024] The soil exchange station includes a lift lifting part and a jack lifting part. Since the soil exchange station is heavy and cannot be carried by people, and there are no fixed lifting points in the tunnel for lifting heavy objects, a flat pushing method with a shoulder pole is designed, and the exchange station is sent to the designated position by using the electric soil transport trolley 7. Taking the lift part as an example, during displacement, the two symmetric short bases 1 on both sides are bolted together as a whole with two portal steel beams (channel steel 20#A: 200x73x7), and the connection between the short base 1 and the tunnel embedded bolts 6 is removed. Four jacks are used to jack the head and tail steel beams respectively, and the bottom is leveled with square inclined irons 13. After jacking up, the soil transport trolley 7 passes through from below. Lower the jacks, place the steel beam on the soil transport trolley 7, and then transport it. After arriving at the designated position, the trolley is removed in the same way. Finally, the middle steel beam is removed and the embedded bolts 6 are connected. When the jack lifting part is displaced, the jacks 10 need to be removed for jacking the steel beam, and the other working conditions are the same as those of the lift displacement.

[0025] Precision control method:

[0026] Due to the narrow space in the tunnel, it is difficult to ensure the accuracy of bolt hole drilling and the position of the embedded bolt 6. Before installation, use a template to make a drilling position mark in the tunnel, and then use a level and a tape measure to check the position. Use a hammer drill to drill holes, with the drilling depth referring to 2 / 3 of the screw length of the embedded bolt 6, and the drilling diameter being 1.2 times the screw diameter of the embedded bolt 6. After the embedded bolt 6 is embedded, measure the position of the screw. If the screw position meets the tolerance requirements, proceed to the next step of installation; if it does not meet the tolerance requirements, adjust the position of the embedded bolt 6 or replace the bolt and re-embed it. Before installing each base, first install the square wedge 13. After measuring that the position of the wedge meets the design requirements, then install the base. Through the installed wedge, position and fine-tune the position of the base. After accurate positioning, insert a plug plate into the gap between the square wedge 13 and the base, and finally tighten the nuts to complete the installation.

Claims

1. A steel structure base for an earthwork exchange station in a tunnel, characterized in that: It includes two short bases for connecting the lift and two long bases for connecting the jack. The two short bases are relatively connected to the tunnel entrance side of the tunnel, and the two long bases are relatively connected to the tunnel face side. The short base and the long base both include a base top surface, a base bottom surface and a displacement side plate. The base bottom surface is an arc that fits the shape of the construction tunnel wall, and a plurality of bolt holes are reserved for connection with the embedded bolts in the tunnel pipe wall. The short base and the long base are open structures toward the center of the tunnel. The base top surface and the base bottom surface are connected by a plurality of vertical reinforcement plates. The displacement side plates are bolted to the connection kit of the earth-moving trolley when the base is displaced, and the two ends are connected with triangular toggle plates for reinforcement.

2. The steel structure base of the earthwork exchange station in a tunnel according to claim 1, characterized in that: Holes for the wires to pass through are reserved between the reinforcing plates.

3. The steel structure base of the earthwork exchange station in a tunnel according to claim 1, characterized in that: The top surface of the base is connected to the lifting machine column through bolts.

4. The steel structure base of the earthwork exchange station in a tunnel according to claim 1, characterized in that: The embedded bolts are M20 high-strength chemical bolts, with six bolts on the short base and eight bolts on the long base.

5. The steel structure base of the earthwork exchange station in a tunnel according to claim 1, characterized in that: The base is entirely made of 10mm steel plates, and jacks are connected to both sides of the top surface of the long base, and a hydraulic pump station and an electric box space are reserved between the two jacks.

6. A steel structure base for an earthwork exchange station in a tunnel according to any one of claims 1 to 5, characterized in that: The dimensions of the short base are 1050*680*544mm, the dimensions of the long base are 2900*680*544mm, and the height of the displaced side panel is 100mm.

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