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Accurate lifting method for settlement ballastless crossover turnout of operating high-speed rail

A technology for crossing lines and turnouts, which is applied in the field of precise lifting of high-speed railway subsidence and ballastless crossing line turnouts. It can solve the problems of poor control of lifting accuracy, achieve the effects of improving lifting accuracy, facilitating the control of lifting alignment, and ensuring stability

Pending Publication Date: 2022-06-03
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

[0010] Aiming at the deficiencies in the prior art, the present invention provides a precise lifting method for the subsidence ballastless crossing turnout of the operating high-speed railway, which can effectively solve the problem of poor lifting precision control of the special track structure of the ballastless crossing turnout, and also It can ensure the stability of the track structure after the lift, ensure that the lift does not affect the normal operation of the ballastless crossing line switch and open to traffic on time the next day, and retain the re-maintainability of subsequent settlement

Method used

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  • Accurate lifting method for settlement ballastless crossover turnout of operating high-speed rail
  • Accurate lifting method for settlement ballastless crossover turnout of operating high-speed rail
  • Accurate lifting method for settlement ballastless crossover turnout of operating high-speed rail

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Embodiment 1

[0080] After a high-speed railway was opened to traffic, due to complex geological reasons, the crossover turnout 1 had a large uneven settlement. The maximum settlement was 60mm, which exceeded the adjustment range of the fastener 2 system of the ballastless crossover turnout 1 and affected the track smoothness. . This patented technology is used to lift and repair the unevenly settled ballastless crossing switch 1 to restore the track smoothness. Its process flow is as figure 1 The specific implementation is as follows:

[0081]1. Determine the lift range and lift amount of the ballastless crossing turnout 1, and arrange the strain gauges 5

[0082] Specifically: use a level instrument, a rail inspection trolley, etc. to detect the alignment of the ballastless crossing turnout 1, determine the lift range and amount, and connect it with the support layer 4 of the ballastless crossing switch 1 and the ballastless crossing. 3. Arrange strain gauges 5 at intervals of not more...

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Abstract

The invention discloses an accurate lifting method for a settlement ballastless crossover turnout of an operating high-speed rail. The method comprises the steps that the lifting range and the lifting amount of the ballastless crossover turnout are determined, and strain gauges and grouting filling holes are distributed; grouting lifting holes are formed in a non-double-line integral structure section of the turnout in a left-right asymmetrical zigzag mode at intervals in the line direction; grouting lifting holes are formed in the double-line overall structure section at intervals in a rectangular shape; zoning according to turnout switch, connection, frog and crossover parts, and selecting adaptive grouting materials to lift each zone; concrete tensile strain at different parts of the turnout is monitored, and the lifting sequence and height are adjusted according to the concrete tensile strain, so that the turnout concrete does not crack; after lifting is completed, the turnout is debugged, and if work cannot be carried out, local supplementary lifting is carried out till the turnout works normally; and after the grouting filling hole is lifted to the target line shape, the grouting filling hole is filled with a high-fluidity low-expansibility grouting material. The problem that ballastless crossover turnout lifting precision control is poor is solved, the structural stability of the lifted track is guaranteed, and normal work of the turnout and on-time traffic of the next day are not affected.

Description

technical field [0001] The invention relates to the technical field of high-speed railway line maintenance, in particular to a method for accurately lifting a turnout on a subsidence ballastless crossing line of a high-speed railway. 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. [0003] Due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B29/00E01B29/04E01B1/00E01B7/14E01B2/00
CPCE01B29/00E01B29/04E01B1/002E01B7/14E01B2/00
Inventor 郑新国刘竞李书明窦东斌蔡德钩戴宗林张驰谢永江姚建平楼梁伟梁晨魏少伟陆满成洪剑潘永健张立刚陈敏包国杰杨德军奎海鹏王邦胜侯志刚杨冀超刘文刘相会张永朝邓青山李康周骏李洪福郁培云丁威张文达张旭柴金川刘博影方金冯国玖董恩江饶云兵
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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