Construction method for renovating horizontal deformation hazards of terminal spines of ballastless tracks

Abstract

The invention provides a construction method for renovating horizontal deformation hazards of terminal spines of ballastless tracks. The construction method includes a ballastless track terminal spine structure. The construction method includes steps of firstly distributing observation points and deformation monitors at the steel rail tops of two rails, two ends of a track slab and two ends of a concrete foundation; drilling grouting holes in the roadbed surfaces on two sides of small terminal spines and large terminal spines outside and between the two rails; after drilling, mounting seamless sleeve valves at the centers of the grouting holes, and pouring shell materials between the seamless sleeve valves and the walls of the grouting holes; grouting the grouting holes by a grouting pipe, and timely adjusting grouting pressure during grouting according to the track deformation conditions and the grouting amount; after grouting, sealing the grouting holes by concrete with the same grade as a friction plate. The construction method is used for renovating the horizontal deformation hazards of the terminal spines of the ballastless track by grouting and reinforcing the roadbed of the terminal spine area.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a construction method for rectifying horizontal deformation defects of ballastless track end spikes. Background technique [0002] The research on ballastless track in our country started relatively late. With the rapid development of high-speed railway, the experience in design, construction and operation is not very sufficient, and there are still some key technical issues to be further studied. At the same time, during the large-scale promotion and use of ballastless track technology, its disease problems will become more and more prominent. Especially after the ballastless track subgrade is built, the overall concrete is usually closed, and the disease is difficult to find. After the disease is found, it is difficult, expensive and time-consuming because most of the diseases are hidden projects. At present, the repair of slab ballastless track subgrade disea...

AI Technical Summary

Problems solved by technology

Especially after the ballastless track subgrade is built, the overall concrete is usually closed, and the disease is difficult to find. After the disease is found, it is difficult, costly and time-consuming because most of the diseases are hidden projects.

At present, the repair of slab ballastless track subgrade disease is in the exploratory stage in terms of repair materials, repair methods and repair procedures. There are relatively few reports in this area at home and abroad, especially for the treatment of CRTS Ⅱ slab ballastless track end spike disease method, even rarer

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