Shield segment lining connector structure with limiting function

Abstract

The invention provides a shield segment lining connector structure with a limiting function to achieve simultaneous limiting of a longitudinal slot and an annular slot during segment assembly. The quality of a formed tunnel is improved, the mounting difficulty of connecting bolts is reduced, and mounting efficiency is effectively improved. The shield segment lining connector structure comprises a preorder splicing segment with a bolt front hole channel and a postorder splicing segment with a bolt rear hole channel, and a connecting bolt penetrates through the corresponding bolt front hole channel and bolt rear hole channel to connect the preorder splicing segment and the postorder splicing segment into a whole. A limiting mortise is arranged at the position, located on an end opening of the bolt front hole channel on a splicing joint, of the preorder splicing segment, and the rear portion of a limiting tenon with a through hole allowing the connecting bolt to penetrate is mounted in the limiting mortise. A limiting tenon groove is formed in the position, located on an end opening of the bolt rear hole channel on a splicing joint, of the postorder splicing segment, the length of the limiting tenon groove extends in the splicing sliding direction, and the front portion of the limiting tenon is inserted into the limiting tenon groove. The splicing joints comprise an annular splicing joint and a longitudinal splicing joint.

Description

technical field [0001] The invention relates to a prefabricated segment lining of a shield tunnel, in particular to a shield segment lining joint structure with a position-limiting function. Background technique [0002] The shield tunnel lining is generally assembled by high-precision prefabricated segments in the factory. In domestic shield tunnel projects, bolts with reliable strength and rigidity are generally recommended for reliable connection between segments. Connectors act as segment lining joints. [0003] In the process of assembling segments, especially large-diameter shield segments, inaccurate positioning between segments will cause a series of problems such as poor quality of tunnel formation, reduced aesthetics, poor waterproof effect and even failure to install bolts. For this reason, it is necessary to take certain measures to accurately limit the segments and improve the assembly quality of the segments. At present, the limit device or the concave-convex...

AI Technical Summary

Problems solved by technology

At present, the limit device or the concave-convex tenon structure of the joint surface used in China has high requirements for the segment formwork, great weakening of the segment structure, difficulty in segment assembly, difficulty in balancing the circular seam and the longitudinal seam, and easy The slice structure causes secondary disasters and other problems

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