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Double-layer lining shield tunnel deformation joint structure and shield tunnel

A technology of shield tunneling and deformation joints, which is applied in the field of tunnels, can solve problems affecting the waterproofing effect of deformation joints and operational safety, excessive joint opening and displacement, uneven settlement, etc., so as to improve the waterproof effect and prevent The effect of staggering the platform and reducing structural damage

Pending Publication Date: 2018-06-12
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Abstract
  • Description
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Problems solved by technology

[0006] (4) Structural damage reinforcement, etc.
However, in soft ground, shield tunnels have the characteristics of large uneven settlement and strong earthquake action. Such deformation joints are prone to excessive joint opening and displacement, which will affect the waterproofing effect of deformation joints and operational safety.

Method used

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  • Double-layer lining shield tunnel deformation joint structure and shield tunnel
  • Double-layer lining shield tunnel deformation joint structure and shield tunnel
  • Double-layer lining shield tunnel deformation joint structure and shield tunnel

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other. The present invention will be further described in detail below in combination with specific embodiments.

[0037] Such as Figure 3-7 As shown, the embodiment of the present invention provides a semi-flexible and semi-rigid double-layer lining shield tunnel deformation joint structure, including a segment 1 and an inner lining 2. In the non-deformation joint section, the segment 1 and the inner ...

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Abstract

The invention discloses a semi-flexible and semi-rigid double-layer liner shield tunnel deformation joint structure. The structure comprises segments and linings, and laminated structural connection is formed between the segments and the linings in a non-deformation joint section; in a deformation joint section, the segments is continuously provided with N segment deformation joints at a predetermined length L at each interval, and N is an integer greater than or equal to 1; in positions corresponding to deformation joints of the segments, the linings are provided with lining small sections, lining deformation joints are arranged at the junction of the lining small sections and adjacent non-deformation joint sections, and the lining deformation joints and the segment deformation joints arearranged longitudinally in a staggered mode; and the invention further discloses a shield tunnel. According to the semi-flexible and semi-rigid double-layer liner shield tunnel deformation joint structure and the shield tunnel, the longitudinal rigidity of the deformation joints is higher than that of conventional flexible deformation joints, the opening amount of the segment joints can be reduced effectively, and the waterproof effect of a double-layer lining structure is improved; N segment deformation joints are arranged at the deformation joint sections to jointly share the opening amountof the segment joints; and the segments and the lining deformation joints are staggered in space, and the transverse shear can be resisted effectively to prevent slab staggering.

Description

technical field [0001] The invention belongs to the field of tunnels, and in particular relates to a double-layer lining shield tunnel deformation joint structure and a shield tunnel. Background technique [0002] Shield tunnels usually adopt a single-layer segment lining structure, but linings are sometimes required in the following situations: [0003] (1) In order to improve the fire resistance and crash resistance of the railway shield tunnel structure; [0004] (2) Improve the ability of the tunnel to resist uneven settlement by increasing the longitudinal stiffness of the tunnel; [0005] (3) The load during the tunnel operation period has changed significantly; [0006] (4) Reinforcement of structural damage, etc. [0007] The lining thickness is usually 15-30cm. In order to improve the ability of lining shield tunnels to adapt to deformation and additional loads, improve their seismic performance, and reduce cracking and damage of lining structures, deformation j...

Claims

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Application Information

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IPC IPC(8): E21D11/08E21D11/38
CPCE21D11/083E21D11/385
Inventor 肖明清薛光桥邓朝辉孙峰
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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