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A kind of shield starting end reinforcement structure, reinforcement method and shield starting method

A technology for reinforcing structures and starting ends, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc., can solve the problems of consuming large consumables, increasing the workload of construction workers, and increasing construction costs, so as to save consumables, save manpower, reduce The effect of construction energy consumption

Active Publication Date: 2022-05-13
BCEG CIVIL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a shield starting end reinforcement structure, a reinforcement method and a shield starting method, so as to solve the problem that the existing end soil reinforcement method is applied to the situation where the ground conditions are good and the soil self-stability is strong. In the case of soft ground, there are technical problems such as large waste, large consumption of consumables, increased workload of construction workers, and increased construction costs

Method used

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  • A kind of shield starting end reinforcement structure, reinforcement method and shield starting method
  • A kind of shield starting end reinforcement structure, reinforcement method and shield starting method
  • A kind of shield starting end reinforcement structure, reinforcement method and shield starting method

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Embodiment 1

[0054] like figure 1 and figure 2 Shown is a shield starting end, the reinforcement structure 1 of the shield starting end is arranged in the soil body in front of the enclosure structure 2 and one side of the reinforcement structure 1 is connected to the enclosure structure 2, and the reinforcement structure 1 is A steel member driven vertically into the soil. It should be noted that in the present invention, "front" refers to the same direction as the direction of movement of the shield machine, and "rear" refers to the direction opposite to the direction of movement of the shield machine.

[0055] In this embodiment, the reinforcing structure is cup-shaped, including a cup bottom 11 and two cup walls 12 arranged at the ends of the cup bottom 11 . The thickness of the cup bottom 11 and the cup wall 12 is 40-60cm. The opening of the reinforcement structure 1 at the originating end of the shield faces the front of the enclosure structure 2 , and the cup bottom 11 of the re...

Embodiment 2

[0062] like Figure 9 and 10 Shown is the originating end of the shield. The difference from the first embodiment is that the reinforcement structure 1 in this embodiment is in a straight shape, and one side of the reinforcement structure 1 is in contact with the enclosure structure 2 . The reinforcement structure 1 has a width of 40-60 cm. The rest are all the same as in Example 1.

[0063] like Figure 11 As shown, the reinforcement structure 1 is a pipe curtain structure formed by closely arranged steel pipe piles.

[0064] like Figure 12 As shown, the reinforcement structure 1 is a Larsen steel sheet pile cofferdam structure.

[0065] like Figure 13 and 14 As shown, the reinforced structure 1 is an H-shaped steel curtain structure. in Figure 13 The medium H-beams are rotated 90° at intervals. Figure 14 The medium H-beams are arranged in parallel.

[0066] like Figure 15 and 16 , the reinforcement structure 1 is an I-beam curtain solution structure. in ...

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Abstract

The shield starting end reinforcing structure, reinforcing method and shield launching method of the present invention belong to the technical field of shield tunneling construction. The reinforcing structure of the shield starting end is arranged in the soil body in front of the enclosure structure and one side of the reinforcing structure Connected with the enclosure structure, the reinforcement structure is a steel member driven into the soil body vertically. The reinforcement structure plays the role of strengthening the soil, avoiding a large amount of soil reinforcement, saving consumables, saving manpower, reducing the workload of construction workers, and reducing energy consumption and construction costs. The removed components can be reused to further reduce the construction cost. The present invention does not require overall reinforcement of the end soil body, reduces construction energy consumption, and saves construction costs. When the shield machine is started, the shield machine passes through the cavity formed by the removed components, and directly cuts the low-strength ungrouted soil to avoid abnormal wear of the shield machine and prevent the shield body from torsion.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a reinforcement structure for the starting end of a shield tunneling machine, a reinforcement method and a shield tunneling tunneling method suitable for soft soil strata with good ground conditions at the end of the shield tunneling machine and strong soil self-stability. method. Background technique [0002] Shield initiation is one of the key processes in shield tunneling construction, and whether it can be successfully completed is related to the success of shield tunneling. During the initial excavation of the shield tunnel, the soil at the end of the shield tunnel must be reinforced, and the reinforcement form must be reasonably selected according to the stratum conditions and construction conditions at different points. Stirring piles or jet grouting piles are often used in soft soil strata. If the stratum is rich in water and the environment is complex, freezing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D9/06
CPCE21D9/001E21D9/0642E21D9/0671
Inventor 马云新赵洪岩梁宇李生光李森阚宝存
Owner BCEG CIVIL ENG