Rapid pushing and replacing construction method for ballastless track structure of passenger special line

Abstract

The invention discloses a rapid pushing and replacing construction method for a ballastless track structure of a passenger special line. The method comprises the process of renovating a disease area by adopting a detachable inverted arch structure. The process is divided into three stages of a preparation stage, a key stage and a recovery stage. The key stage at least comprises the steps of chiseling away grooves and roadbed slabs in a segmented mode, erecting temporary steel beams, laying wooden sleeper track panels, excavating a bottom of a tunnel, disassembling and replacing inverted archesand filling layers, carrying out end prestress anchoring and reinforcing, and carrying out roadbed pouring. In the process of chiseling away the grooves and track plates in the segmented mode, the track plates are pushed out of the grooves in a segmented and blocked mode, construction efficiency is high, a speed is high, and safety is good; and construction skylight is used for operation and railway operation line construction, influences of factors such as traffic safety, construction boundaries, technological processes and the like are considered, and the construction method and steps are reasonable in arrangement.

Description

technical field [0001] The invention relates to the technical field of track construction, in particular to a construction method for quickly moving and replacing a ballastless track structure of a passenger dedicated line. Background technique [0002] The high-speed railway is characterized by high speed and high density, and its goal is high safety and high riding comfort, so the track structure must have high ride comfort and high stability. The core of high smoothness is to maintain a good geometric state of the track structure; high stability refers to the ability of the track to maintain high smoothness and balanced elasticity, and maintain the effectiveness and integrity of components under high-speed operating conditions. If the stability of the track is difficult to guarantee, necessary repairs or quick replacement must be carried out. [0003] CRTS Ⅰ slab ballastless track, CRTS Ⅱ slab ballastless track, CRTS Ⅲ slab ballastless track, double-block ballastless tra...

AI Technical Summary

Problems solved by technology

[0007] In addition, my country's high-speed railway has a large traffic volume and short skylight time; maintenance (or replacement) of the ballastless track structure or track slab interferes with the normal transportation order, forming a new safety hazard; affecting the high utilization rate of the line; transportation and maintenance ( Or replace) the contradiction is prominent, the promotion and application of less maintenance or quick replacement of track slabs is of great significance during the operation of passenger dedicated lines

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