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Method for lifting end-beam-contained ballastless track structure under operation high-speed rail

A ballastless track and end beam technology, applied in the direction of track, track maintenance, roads, etc., can solve problems such as limiting the repairability of the line, difficult to repair the geometric state of the track, affecting the high-speed, safe and comfortable operation of the train, and achieving the goal of retaining reliability. Remainability, improvement of accuracy and stability, effect of ensuring stability

Pending Publication Date: 2022-07-29
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the integrity of the ballastless track structure also limits the repairability of track smoothness, that is, track irregularities can only be repaired within the allowable adjustable range of the fastener system
[0003] Due to complex geological conditions, regional uneven settlement, etc., the ballastless track in the embankment section of some operating lines has experienced large settlement, which greatly exceeds the adjustable range of the fastener system, and the geometric state of the track will be more difficult to repair. Directly affect the high-speed, safe and comfortable operation of trains

Method used

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  • Method for lifting end-beam-contained ballastless track structure under operation high-speed rail
  • Method for lifting end-beam-contained ballastless track structure under operation high-speed rail
  • Method for lifting end-beam-contained ballastless track structure under operation high-speed rail

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Effect test

Embodiment

[0067] After a high-speed railway was opened to traffic, due to complex geological reasons, the lower end-beam 6 ballastless track and its front and rear ballastless tracks had a large uneven settlement. The maximum settlement was 60mm, which exceeded the adjustment range of the fastener 2 system and affected the Track smoothness. This patented technology is used to lift and repair the unevenly settled ballastless track to restore the track smoothness. Its process is as figure 1 The specific implementation is as follows:

[0068] (1) Determine the lifting range and lifting amount of the ballastless track with the lower end beam 6, and arrange the strain gauges 10

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Abstract

The invention provides a method for lifting an end-beam-contained ballastless track structure of an operating high-speed rail, and relates to the technical field of railway ballastless track structure repair, comprising the following steps: determining the lifting range and target lifting amount of the end-beam-contained ballastless track structure; a plurality of grouting lifting holes are formed right above the end beam of the ballastless track containing the end beam, armpit feet on the two sides and the ballastless track of the front section and the rear section adjacent to the end beam; meanwhile, grouting materials are injected into the grouting lifting holes in the end beam area, and the ballastless track with the lower end beam is lifted; and after the grouting lifting hole is lifted to the target lifting amount, the grouting lifting hole is densified, and a high-fluidity low-expansibility grouting material is injected to complete filling. According to the method, the grouting lifting holes are formed, so that the ballastless track structure with the lower end beam and large lifting resistance is lifted, the problems that the ballastless track structure with the lower end beam and the special track structure with the lower end beam are large in lifting difficulty and poor in precision control are solved, the stability of the lifted track structure can be guaranteed, and the remaintainability of follow-up sedimentation is reserved.

Description

technical field [0001] The invention belongs to the technical field of railway ballastless track structure repair, and in particular relates to a method for lifting the ballastless track structure with end beams under operating high-speed railways. Background technique [0002] In recent years, my country's high-speed railway has developed rapidly, and the operating mileage has exceeded 40,000 kilometers, which has greatly eased the pressure on my country's passenger traffic. In my country, high-speed railways are mainly based on the laying of ballastless track structures. The good integrity and smoothness of ballastless tracks ensure the high-speed, smooth and safe operation of trains, thus meeting people's requirements for fast and comfortable travel. However, the integrity of the ballastless track structure also limits the repairability of the line smoothness, that is, the line irregularity can only be repaired within the adjustable range allowed by the fastener system. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B37/00E01B35/00
CPCE01B37/00E01B35/00
Inventor 郑新国姚建平刘竞李书明靳昊窦东斌蔡德钩张驰戴宗林周骏梁晨谢永江陈敏陆满成楼梁伟洪剑魏少伟杨德军潘永健张立刚谭社会刘吉元马超锋曹渊东刘文李斯牛亚彬张也李瑞峰孙宣刘瑞施文杰韩正国刘相会邓青山柴金川李康郁培云张旭李洪福丁威张文达饶云兵何庆冯国玖董恩江
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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