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Assembly type segment lining structure of large-section horseshoe tunnel

A horseshoe-shaped, large-section technology, applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the problems of circular tunnels without structural advantages and low space utilization, so as to improve space utilization and structural stability, reduce The effect of volume and overall structure design is reasonable

Active Publication Date: 2017-05-17
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD +2
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Problems solved by technology

Although the shield technology is becoming more and more mature, its geometric shape is still mainly circular due to the consideration of force conditions and mechanical design convenience, but its space utilization rate is low, and it can be used in soil layers with small lateral pressure coefficients. In the circular tunnel there is no structural advantage

Method used

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  • Assembly type segment lining structure of large-section horseshoe tunnel
  • Assembly type segment lining structure of large-section horseshoe tunnel
  • Assembly type segment lining structure of large-section horseshoe tunnel

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Embodiment Construction

[0039] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] see Figure 1-Figure 18 , an assembled segment lining structure for a large-section horseshoe-shaped tunnel according to the present invention, wherein the tunnel section of the segment lining is a horseshoe-shaped structure with smooth transitions of multiple circular arcs, and the main body shape of the segment lining consists of a top circular arc and two middle circular arcs. arc and a section of bottom arc are smoothly transitioned to form a horseshoe-shaped structure with four centers and three diameters (arcs with three different radius sizes and four centers), such as figure 1 with figure 2 Shown, O 1 , O 2 , O 3 , O 4 is the center of four circular arcs, the tunnel section of the segment lining is left-right symmetrical, and the layout structure of the segments in the odd-numbered segment ring units and the...

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Abstract

The invention belongs to the technical field of large-section tunnel segment assembly and provides an assembly type segment lining structure of a large-section horseshoe tunnel. The tunnel section of a segment lining is of a horseshoe structure in smooth transition through a plurality of sections of arcs. The segment lining structure comprises odd segment ring units and even segment ring units, and the odd segment ring units and the even segment ring units are alternately and cyclically distributed and each comprises a plurality of segment blocks. The splicing seams of the segment blocks of the odd the segment ring units and the splicing seams of the segment blocks of the even segment ring units are distributed in a staggered mode along a horseshoe segment ring. The assembly type segment lining structure is reasonable in overall structural design, the space utilization rate is increased, the structural stability is improved, and the earth volume of backfilled concrete is decreased; staggered splicing of the splicing seams is achieved, the longitudinal rigidity of the horseshoe tunnel segment lining is improved, and structural deformation is reduced; and shear stress is mutually borne through the segment blocks and inclined bolts connecting the segment blocks, and waterproof treatment and protection can be conveniently conducted on the splicing seams.

Description

technical field [0001] The invention belongs to the technical field of large-section tunnel segment assembly, and in particular relates to an assembled segment lining structure of a large-section horseshoe-shaped tunnel. Background technique [0002] Through the development of shield tunneling technology in my country in recent decades, especially in recent years, shield tunneling has been widely used in the construction of urban tunnels, long-distance railways, and highway mountain tunnels. From small municipal pipeline tunnels, to urban subway tunnels, to large-scale water conservancy and river-crossing tunnels with increasingly larger diameters, shield tunneling can be used for construction. Although the shield technology is becoming more and more mature, its geometric shape is still mainly circular due to the consideration of force conditions and mechanical design convenience, but its space utilization rate is low, and it can be used in soil layers with small lateral pre...

Claims

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Application Information

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IPC IPC(8): E21D11/08E21D11/10E21D11/38
CPCE21D11/083E21D11/105E21D11/385
Inventor 王柏松夏勇王丽庆李建伟闫艳辉陈申强田伟军罗雨田王全胜于少辉谢飞
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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