Shield segment, segment ring, tunnel segment lining, and tunnel

Abstract

The invention discloses a shield segment, a segment ring, a tunnel segment lining, and a tunnel. The shield segment comprises a segment body; an axial protrusion and a first caulking which are used for axial connection are arranged on a first side face of the segment body; an axial groove and a second caulking which are used for axial connection are arranged on a second side face of the segment body; in the annular direction of the segment body, a positioning protrusion used for annular positioning is arranged on the first annular face, and a positioning groove used for annular positioning is formed in the second annular face; an annular I-shaped steel support is inserted between every two adjacent segment rings; inner wing plates of the I-shaped steel supports are located at the inner sides of the inner rings of every two adjacent segment rings; outer wing plates of the I-shaped steel supports are inserted into caulking seams of the adjacent segment rings respectively; and bolts penetrate through the inner wing plates, the segment body and the outer wing plates. According to the shield segment, the segment ring, the tunnel segment lining, and the tunnel, compared with a traditional segment connecting mode, the axial and annular connection of the segments is jointly borne by the I-shaped steel supports and the segments, so that the connecting effect between the segments is strengthened, and meanwhile the integrity of a supporting system is improved.

Description

technical field [0001] The invention belongs to the field of shield construction, and in particular relates to a shield segment, a segment ring, a tunnel segment lining and a tunnel. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The shield segment is the main assembly component of shield construction and the innermost permanent lining structure of the tunnel, which bears the role of resisting soil pressure, groundwater pressure and some special loads. For tunnels constructed by the shield method, the segment lining of a ring is generally composed of one capping block, two adjacent blocks and three standard blocks, and the rings are spliced ​​with through joints or staggered joints. The joints between segments include longitudinal connections along the longitudinal axis of the tunnel and circumferential connections perpendicular to the longitudin...

AI Technical Summary

Problems solved by technology

[0005] (1) The connection between the axial direction and the circumferential direction of the segments is only undertaken by bolts, which cannot guarantee the integrity of the support system;

[0006] (2) How to prevent the staggering phenomenon between segments is not considered from the segment design level;

[0008] (4) Bending bolts are generally used to realize the connection between the segments, but the bending bolts are not easy to be inserted between the segments, and it is not easy to adopt a mechanized installation method;

[0009] (5) The bolt connection holes reserved on the segment are arc-shaped, which is not only difficult to process and manufacture, but also difficult to guarantee the quality of the segment

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