Method for rectifying and selecting tunnel segment

Abstract

The invention discloses a method for rectifying and selecting a tunnel segment. The method comprises a step of confirming a segment-assembling and combining proposal. The step comprises the content as follows: firstly, a plurality of positions used for sticking wedges with maximum thickness are set along the circle of the end surface of a segment assembling position at a shield tail; then all segment permutation and combination forms which are formed in a way that a current ring and a plurality of subsequent ring segments respectively stick the wedges with the maximum thickness at a plurality of positions are arranged; at the same time, the deviation between a tube ring center of the last ring in each segment permutation and combination form and a tunnel design axial line is measured; and finally a proposal with minimum deviation is confirmed as the segment-assembling and combining proposal. The invention has the advantages of high efficiency, good effect and wide application range; the method can select a construction proposal with best segment selection and combination assembly fast and automatically to achieve the effects of reducing the construction axial line deviation and ensuring the tunnel engineering quality; and the method is applicable to the selection and the construction of the segment-assembling and combining proposal in a shield tunnel with the assembly form of all types.

Description

Technical field: [0001] The invention relates to the construction of segment assembling in a shield tunnel, in particular to a method for rectifying deviation and selecting a tunnel segment. Background technique: [0002] The shield method tunnel is formed by assembling a fixed number of segments (prefabricated concrete components) into a ring in the shield machine. The shield machine is a machine that cuts the soil with a cutterhead and protects the working surface by a cylindrical steel shell. , relying on the segments assembled into a ring in the steel shell to provide support for the circumferentially arranged jack group, and then pushed forward by the jack, so as to realize the large-scale machine that advances in the soil. In the process of underground operation, the trajectory of the shield machine will basically form the actual axis of the underground tunnel. The project requires that the actual axis of the tunnel should be as close to or completely consistent with t...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art that it cannot be used in the joint-through assembly method of tunnel construction, but can only be manually selected and realized in the construction scheme of segment assembly and combination, and to provide a high-efficiency tunnel pipe Segment deviation correction selection method, which is not only applicable to the staggered joint assembly method but also suitable for the shield tunnel construction of the joint joint assembly method, this method can quickly determine the optimal segment selection for the thickness and position of the wedge during construction Combining construction schemes to ensure the construction quality of the tunnel project and reduce the deviation of the construction axis

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