City-rail steel spring floating slab rail bed railroad switch construction method

A construction method and floating slab technology, applied in the directions of roads, tracks, ballast layers, etc., can solve the problems of high vibration and noise, lack of ideals, and high maintenance costs, so as to reduce urban noise pollution, improve the environment, reduce Effects of vibration and noise

Active Publication Date: 2007-10-31
CHINA RAILWAY FIRST GRP CO LTD +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

Although the vibration and noise produced by ballasted bed turnouts are smaller than those of ballastless bed turnouts, the geometric dimensions of ballasted bed turnouts are prone to change, and the maintenance costs are high. However, when the train passes through the turnout, the vibration and noise are relatively large, which has become a major technical problem that needs to be solved urgently
At present, whether it is for ballasted or ballastless bed, various vibration and noise reduction technologies are used to reduce vibration and noise for the line part, but there is no ideal for the vibration and noise reduction of turnouts. technical solutions

Method used

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  • City-rail steel spring floating slab rail bed railroad switch construction method
  • City-rail steel spring floating slab rail bed railroad switch construction method

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Embodiment Construction

[0010] Taking urban subway construction as an example, referring to the accompanying drawings, the specific construction methods are as follows:

[0011] a. Substrate backfill

[0012] a.1 Carry out a comprehensive chiseling treatment on the tunnel structure base (1), clean the tunnel floor, install expansion anchor bolts (3) at the bottom of the tunnel side wall, and bind them firmly with the reinforcement mesh of the backfill layer (2),

[0013] a.2 Lay a single layer of steel mesh on the concrete of the base (1), and make a downward bending treatment at the place where it meets the ditch,

[0014] a.3 The bottom plate is provided with a semi-circular water ditch (4). The formwork is made of PVC pipe, which is divided into two along the radial direction.

[0015] a.4 Arrange backfilling concrete surface elevation piles according to the vertical and horizontal spacing not greater than 3 meters, pour concrete,

[0016] b. Measurement and design of base standard and center po...

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Abstract

The invention discloses a city train steel spring floating track construction method for resolving the vibration, noise problems of train in railroad switch, which lays city railroad on a steel spring floating plate without slag bed, to reduce the vibration and noise, comprising that filling base, testing and arranging base mark and vibration insulator center point, grinding and repairing the surface of the filled layer of the insulator, laying insulated film, laying railroad switch, positioning and mounting an outer muffle of the insulator, bonding a floating plate steel bar network and anti-drop steel bars, adjusting the railroad switch, mounting a force cutter and a support template, pumping concrete to irrigate the floating plate bed, detaching mould of the concrete and maintaining, lifting up the steel spring floating plate.

Description

technical field [0001] The invention relates to a construction method for a new urban railway track structure, in particular to a construction method for an urban railway steel spring floating slab track bed turnout, which belongs to the new field of railway construction. Background technique [0002] The urban railway turnout is the weakest link in the track system. The vibration and noise generated by the train passing through the turnout are much larger than those on the line. Although the vibration and noise produced by ballasted bed turnouts are smaller than those of ballastless bed turnouts, the geometric dimensions of ballasted bed turnouts are prone to change, and the maintenance costs are high. However, the vibration and noise of the train passing through the turnout are relatively large, which has become a major technical problem that needs to be solved urgently. At present, whether it is for ballasted or ballastless ballast beds, various v...

Claims

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Application Information

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IPC IPC(8): E01B37/00E01B1/00E01B27/12E01B29/02
Inventor 樊斌左书艺孙柏辉杨宏伟田小毅
Owner CHINA RAILWAY FIRST GRP CO LTD
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