Shear resisting structure between round-end-shaped concave-convex tenon type shield tunnel pipe segment rings
A shield tunnel segment and round-end technology, which is applied in the direction of tunnels, tunnel linings, shaft linings, etc., can solve the problems of loss of shear resistance, local concrete damage, etc., to suppress the deformation of the staggered platform, and improve the shear resistance between the rings effect of ability
Inactive Publication Date: 2014-07-16
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology
[0006] That is to say, the existing technology can only produce two point contact or surface contact at most. When the shear displacement occurs between the segment lining rings, a large concentrated load and local stress will be formed, resulting in local concrete damage and loss of concrete. Shear ability
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.
[0036] Such as Figure 9-11 As shown, the present invention includes adjacent first segment rings 7 and second segment rings 8 arranged in cooperation with each other along the longitudinal direction of the tunnel, and the corresponding mating surfaces between the first segment rings 7 and second segment rings 8 There are a plurality of round-end-shaped projections 9 and round-end-shaped grooves 10 that cooperate with each other, and the round-end-shaped projections 9 and the round-end-shaped grooves 10 cooperate to form a round-end concave-convex tenon shear structure. A plurality of round-end-shaped protrusions 9 and round-end-shaped grooves 10 are arranged in concentric circles according to the tunnel center 11. The schematic d...
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The invention belongs to the technical field of shield tunnel engineering, and particularly relates to a shear resisting structure between round-end-shaped concave-convex tenon type shield tunnel pipe segment rings. The structure comprises the first pipe segment ring and the second pipe segment ring which are adjacent to each other and are arranged in a matched mode in the longitudinal direction of a tunnel, a plurality of round-end-shaped convex blocks and round-end-shaped grooves which are matched are respectively arranged on the corresponding matching face between the first pipe segment ring and the second pipe segment ring, the round-end-shaped convex blocks and the round-end-shaped grooves are arranged in a concentric circle mode according to the circle center of the tunnel, and intervals between the round-end-shaped convex blocks and the round-end-shaped grooves are equal. A plurality of round-end-shaped concave-convex tenons are arranged between the pipe segment rings, after allowable largest fault movement happens to the front and back pipe segment rings in any direction, the round-end-shaped concave-convex tenons can provide the shear resisting capability, and therefore the shear resisting capability between the rings is greatly improved, and the wrong station deformation is restrained.
Description
technical field [0001] The invention belongs to the technical field of shield tunnel engineering, and in particular relates to a round-end-shaped concave-convex tenon type shield tunnel segment ring shear structure, especially suitable for large earthquake action, large moving load in the tunnel during the operation period, or crossing weak tunnels. The shear connection between segment rings of shield tunnels with sudden changes in stratum, geological conditions, and top load can also improve the positioning accuracy of segment assembly. Background technique [0002] In recent years, domestic shield tunnels have developed rapidly, including subways, highways, municipalities, railways, water transportation, gas transmission and other industries. There are many sections of these shield tunnels that pass through weak strata, sudden changes in geological conditions or sudden changes in top loads. Under these conditions, there is one of the most common and most difficult problems...
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IPC IPC(8): E21D11/04
Inventor 肖明清邓朝辉薛光桥蒋超孙文昊
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP