Shield structure tunnel curve section duct piece pre-assembly type selection design method based on BIM technology

Abstract

The invention relates to a shield structure tunnel curve section duct piece pre-assembly type selection design method based on a BIM technology. The shield structure tunnel curve section duct piece pre-assembly type selection design method based on the BIM technology includes the following steps that S1, data of a circuit plane and a vertical section are obtained, and a center line three-dimensional space curve of the shield structure tunnel curve section is formed; S2, a three-dimensional model of single ring duct pieces is established according to a design picture; S3, circuit pre-assembly is conducted along the center line three-dimensional space curve of the shield structure tunnel curve section; S4, a pre-assembly type setting picture of each single ring duct piece is obtained; and S5, entity component installation is conducted according to the pre-assembly type setting pictures. According to the shield structure tunnel curve section duct piece pre-assembly type selection design method based on the BIM technology, a BIM model of annular rings of the duct pieces of the shield structure tunnel curve section is established, so that three-dimensional visual design of arrangement of the shield structure tunnel curve section duct pieces is achieved, the model produced by the shield structure tunnel curve section duct piece pre-assembly type selection design method based on the BIM technology is visualized, is convenient to modify, and can improve the design and assembly efficiency of the shield structure tunnel curve section duct pieces.

Description

technical field [0001] The invention relates to the technical field of shield tunnel segment installation in underground geotechnical engineering, in particular to a BIM technology-based method for pre-assembly and type selection design of segment segments in curved sections of shield tunnels. Background technique [0002] Economically developed cities have begun to build subway projects, and shield construction technology is widely used in subway projects. The tunnel lining constructed by the shield method mainly adopts the fabricated lining, and the lining is a prefabricated reinforced concrete segment, which constitutes the main structure of the shield tunnel and bears the load of the surrounding soil. [0003] The shield tunnel is made up of a series of segments, which can be regarded as a collection of short broken lines, which are approximately fitted to the actual line. The traditional ordinary segments can be simulated by turning rings for plane curves. At present,...

AI Technical Summary

Problems solved by technology

[0004] For the traditional segment design method of shield tunnel curve segment, it has the following disadvantages and limitations: (1) The design result is a two-dimensional drawing, which cannot be as intuitive as a three-dimensional model

(2) It is difficult to consider the assembly of each ring segment in advance, and it is easy to cause excessive cumulative errors

(3) It is difficult to select the wedge shape of the segment according to the curvature of the entire line to achieve the required curvature of the line assembled

Images