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Shield launching construction method with glass fiber reinforced polymer pile and tunnel portal extension ring combined

A glass fiber reinforced and extension ring technology, applied in the field of shield starting construction method, can solve the problems of shield cutter head, tool damage, water gushing and landslides, etc., to save construction period, reduce plugging costs, and reduce mud spraying and water gushing Effect

Pending Publication Date: 2022-05-27
CR10BG NO 3 CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional shield needs to manually chisel out the reinforced concrete enclosure structure. During the chiseling process, the ground is directly exposed, and engineering accidents such as water gushing and landslides are prone to occur. In addition, the manual pile drilling environment is extremely difficult, and shield tunneling is required. Clean up the steel bars within the range, if the cleaning is not clean, it will cause damage to the shield cutter head and cutter

Method used

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  • Shield launching construction method with glass fiber reinforced polymer pile and tunnel portal extension ring combined
  • Shield launching construction method with glass fiber reinforced polymer pile and tunnel portal extension ring combined
  • Shield launching construction method with glass fiber reinforced polymer pile and tunnel portal extension ring combined

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Embodiment 1

[0050] like Figure 1-2 As shown, the present embodiment provides a shield starting construction method of a combination of a glass fiber reinforced pile and a tunnel door extension ring, which includes the following steps:

[0051] Step S1, workpiece production

[0052] In this step, a first set of annular steel plates, a second set of annular steel plates, a rubber water-stop curtain, a fan-shaped folding flap, an arc-shaped plate and bolts are produced;

[0053] In this step, the method of combining the first set of annular steel plates, the second set of annular steel plates and the glass fiber reinforced pile enclosure structure is adopted, that is, two sets of annular steel plates are processed, the first set is installed during the structural construction, and the second set is installed. Installed before the shield starts, the first set of annular steel plates and the second set of annular steel plates are the same size;

[0054] Step S2, pre-embedded shield steel ri...

Embodiment 2

[0088] like Figure 3-8 As shown, this embodiment provides a folding flap used in Embodiment 1, which is characterized in that: it includes a mounting plate 110 fixed on the second annular steel plate by bolts; the mounting plate 110 faces the shield tunnel opening. One end is provided with a rotatable pressing plate 120 extending toward the shield tunnel opening; the end face of the pressing plate 120 facing the outer end of the shield tunnel hole is symmetrically provided with two mounting grooves 210 , and one end of the mounting groove 210 is rotatably provided with one end rotatable to the pressing plate 120 A rotating plate 130 that supports the rubber water stop curtain outside.

[0089] In this embodiment, during use, the mounting plate 110 of the folding flap is firstly fixed on the second annular steel plate by bolts, and then the folding flap is adjusted according to the actual needs to achieve better compatibility with Compatible with rubber water-stop curtain;

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Abstract

The invention relates to the technical field of shield launching construction, in particular to a glass fiber reinforced polymer pile and tunnel portal extension ring combined shield launching construction method which comprises the following steps: S1, manufacturing a workpiece; s2, a shield steel ring is pre-buried; s3, a steel ring extension tunnel portal device is installed; s4, shield launching is carried out; according to the method, manual tunnel portal breaking can be avoided, manpower and material resources are saved, a high-risk source of tunnel portal breaking is avoided, and the method is environmentally friendly, safe and reliable; through the arrangement of the steel ring extending tunnel portal device, the shield can be rapidly started, barrier-free starting of the shield is achieved, the construction period is shortened, and the cost is saved; through the arrangement of the steel ring extending tunnel portal device, tunnel portal soil, underground water, a muck modifier and the like can be prevented from being lost from a gap between a shield shell and a tunnel portal during shield starting tunneling, and the later tunnel portal blocking cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of shield starting construction, in particular to a shield starting construction method in which a glass fiber reinforced pile and a tunnel door extension ring are combined. Background technique [0002] At present, most of the domestic urban subway tunnels are constructed by the shield method. The shield method has the advantages of fast construction speed, small environmental impact, unrestricted excavation by the stratum, and a wide range of applicable stratum soils. However, in the process of tunnel excavation, the shield starts And receiving is the most risky link in shield construction, especially in the process of shield tunnel entry and exit construction, engineering accidents are most likely to occur and most of them are more serious accidents, which are directly related to the safety of surrounding structures and the safety of the entire construction process. Safety, to a certain extent, has become...

Claims

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Application Information

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IPC IPC(8): E21D9/06E21D11/38
CPCE21D9/06E21D11/38Y02E10/20
Inventor 张健李强张豇枥郭昊冉金伟
Owner CR10BG NO 3 CONSTR