A kind of reinforcement structure and construction method of end thorn area

Abstract

The invention discloses a reinforcement structure and a construction method for an end thorn area, comprising: Π-shaped end thorns; a first shield steel wall is horizontally arranged below the main end thorns of the Π-shaped end thorns, and the top of the first shield steel wall is connected to the The bottom of the main thorn is connected by implanted high-strength steel bars; the left and right sides of the first shield steel wall are provided with the second shield steel wall and the third shield steel wall, the first shield steel wall, the second shield steel wall Both the steel wall of the shield tunnel and the steel wall of the third shield tunnel are woven with steel mesh and filled with permeable and expansive self-compacting concrete; Connected with high-strength steel bars as a whole. The reinforcement structure of the end thorn region of the present invention connects the Π-shaped end thorns with the first shield steel wall, the second shield steel wall, and the third shield steel wall through high-strength steel bars, steel mesh and seepage-expandable self-compacting concrete, The original Π-shaped end thorn is changed into an inverted T-shaped end thorn, so that the track structure and the roadbed are well fixed together, which is more conducive to reinforcement.

Description

technical field [0001] The invention relates to the technical field of ballastless track, in particular to a reinforcement structure and a construction method for a stabbing area of ​​a ballastless track. Background technique [0002] In recent years, my country's high-speed railway has developed rapidly, and a "four vertical and four horizontal" high-speed railway network has been initially built. By the end of 2017, the operating high-speed railway mileage reached 25,000 kilometers. The "eight vertical and eight horizontal" high-speed railway network is advancing. High-speed railways have the characteristics of high ride comfort and high stability. In order to achieve this goal, ballastless track structures are generally used in my country's high-speed railway lines. Compared with other track structures, ballastless track structures have strong integrity, high stability and Features good durability. The anchoring structure behind the CRTS Ⅱ plate track platform is composed...

AI Technical Summary

Problems solved by technology

This technology treats the deformation and displacement of ballastless track end spines by grouting reinforcement of the subgrade bed in the end spine area, but the consolidation of the reinforcement end spines and the subgrade is minimal.

Images