Splicing processing method of rectangular shield segment and its shear structure

Abstract

The invention provides a splicing machining method of a rectangular shield duct piece and an anti-shear structure of the rectangular shield duct piece. Each circle of duct piece comprises an annular steel structure and annular concrete arranged on the steel structure; the steel structure comprises a plurality of steel sections and is spliced to be a ring by the steel sections; two adjacent steel sections are connected by two steel end plates respectively arranged on the two steel sections; the anti-shear structure comprises dovetail slot, anti-shear plates and anti-shear slots; the dovetail slots and the anti-shear slots are respectively arranged at the mutually spliced splicing end surfaces of every two adjacent steel end plates; the anti-shear plates are connected with the dovetail slots and the anti-shear slots respectively. The duct piece suitable for combining the concrete and a steel material is provided, and the splicing machining method of the rectangular shield duct piece and the anti-shear structure of the rectangular shield duct piece can enable the strength, splicing precision and sealing performance of the duct piece to be better.

Description

technical field [0001] The invention relates to the field of rectangular shields, in particular to a splicing processing method for rectangular shield segments and a shear-resistant structure thereof. Background technique [0002] At present, in underground engineering, the circular structure of concrete segments is mostly used. With the development of technology, the use of rectangular shields is becoming more and more extensive. In rectangular shields, in order to improve the bending resistance and Shear strength, and surface smoothness, must use concrete and steel segments combined, because the size of the entire segment is too large, it is necessary to divide the segment into several segments in the longitudinal direction, that is, the segment of each ring includes a ring Shaped steel structure and ring-shaped concrete set on the steel structure, the steel structure includes several steel segments, and is spliced ​​into a ring through several steel segments, and the adja...

AI Technical Summary

Problems solved by technology

[0003] In order to realize the splicing of the steel end plates, the shape of the steel end plates needs to be specially customized. The structure is too complicated and the cost is high. Moreover, there is no splicing processing method suitable for this rectangular shield segment in the prior art. And devices, so that even if advanced and reliable materials are used, their potential and material advantages have not been fully realized in terms of strength, splicing accuracy and sealing performance of the segment, and even due to the lack of splicing means, In terms of segment strength, splicing accuracy, sealing performance and other parameters, it is not as good as pure concrete segments

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