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Inverted arch supporting assembly suitable for shield-type TBM tunnel prefabricated segmental lining structure

A technology for supporting components and supporting components, applied in tunnel lining, tunnel, wellbore lining, etc., can solve the problems of segment tunnel ovality exceeding the standard, tunnel segment leaking water, and inability to fill segment.

Pending Publication Date: 2018-05-08
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the shield-type TBM has no shield tail sealing device, the gap between the outer diameter of the segment and the excavation diameter cannot be filled by synchronous grouting; therefore, when the segment comes out of the shield tail, the inverted arch segment will naturally sink to occupy the The gap between the outer diameter of the segment and the excavation diameter will cause the segment to be wrong and the ellipticity of the tunnel to exceed the standard, and it may also cause serious leakage of the tunnel segment in the later stage

Method used

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  • Inverted arch supporting assembly suitable for shield-type TBM tunnel prefabricated segmental lining structure
  • Inverted arch supporting assembly suitable for shield-type TBM tunnel prefabricated segmental lining structure
  • Inverted arch supporting assembly suitable for shield-type TBM tunnel prefabricated segmental lining structure

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] refer to figure 1 , figure 2 , image 3 , Figure 4 , an inverted arch support assembly suitable for the prefabricated segment lining structure of a shield-type TBM tunnel according to the present invention includes: a threaded sleeve 22 arranged inside the outer side of the prefabricated segment 11 according to the envelope of the assembly point; an inverted arch support member 21, It is arranged symmetrically on the outer side of the lower part of the inverted arch, and has an inverted arch support leg 21a and a support screw rod 21b. The support screw rod 21b and the threaded sleeve 22 form a detachable screw connection. as in figure 2 In the shown embodiment, prefabricated segment block one 11a, prefabricated segment block two 11b, and prefabricated segment block three 11c are provided with 4 rows and a total of 8 thr...

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Abstract

The invention relates to an inverted arch supporting assembly suitable for a shield-type TBM tunnel prefabricated segmental lining structure. Under the precondition that the segment structural property is not weakened, the problem that a lining segment is separated out from the shield tail and then naturally sinks can be effectively solved, the ring formation quality of the segment is greatly improved; and meanwhile, mounting of the segment can further be facilitated, and the structural waterproof property can be ensured. The inverted arch supporting assembly comprises threaded sleeves and inverted arch supporting components; the threaded sleeved are arranged in a structure on the outer side of the prefabricated segment in an enveloped mode according to the assembly point position, the inverted arch supporting components are symmetrically mounted and arranged on the outer side of the lower portion of an inverted arch and provided with inverted arch supporting legs and supporting threaded rods, and the supporting threaded rods are detachably in spiral connection with the threaded sleeves.

Description

technical field [0001] The invention relates to tunnel engineering, in particular to an inverted arch support assembly suitable for the prefabricated segment lining structure of a shield type TBM tunnel. Background technique [0002] Rock tunnel boring machines (TBM) were widely used in hydraulic and railway tunnels in the early stage. With the vigorous development of urban rail transit projects, TBM construction methods are also used more and more in urban subway tunnels in rocky areas. Constrained by the special surrounding environment and complex geological conditions of urban subways, shield-type TBMs are generally used for construction. For example, single-shield TBMs are used for Chongqing rail transit, and double-shield TBMs are used for Qingdao rail transit; geological adaptation is generally used for lining structures. It is a prefabricated reinforced concrete segment lining structure with strong performance and rapid construction. [0003] Since the reinforced con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08E21D11/12
CPCE21D11/08E21D11/12
Inventor 史宣陶林刚张建祥何旭苏李辉柴家远杨翔喻波周明亮李学军
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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