Damping vibration-isolating compound track bed for metro and construction method thereof

A technology of composite track bed and compound track, which is applied in the field of subway track bed and its construction, and can solve the problems of increased accumulative deformation of the subway foundation, etc.

Active Publication Date: 2012-03-21
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above shock-absorbing measures have achieved certain effects, the long-term periodic vibration still causes the cumulative deformation of the subway foundation to increase continuously.

Method used

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  • Damping vibration-isolating compound track bed for metro and construction method thereof
  • Damping vibration-isolating compound track bed for metro and construction method thereof
  • Damping vibration-isolating compound track bed for metro and construction method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The content of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] figure 1 It is a structural schematic diagram of a subway compound track bed provided by the present invention. refer to figure 1 As shown, the subway compound track bed includes concrete layers 1a, 1b, 1c and EPS particle board layers 2a, 2b, which are arranged at intervals, wherein the number of layers of the concrete layer is three layers, and the number of layers of the EPS particle board layer is two layers, and The uppermost and lowest floors are concrete floors.

[0023] The construction process is as follows:

[0024] (1) Firstly, conduct indoor tests according to the design requirements of shock absorption and vibration isolation in different sections to determine the composite structure form of the subway composite track bed, the distance and thickness between concrete and EPS panels, and the density of EPS panels.

[0025] (2...

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PUM

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Abstract

The invention relates to a damping vibration-isolating compound track bed for a metro and a construction method thereof. The track bed comprises concrete layers and EPS (Expanded Poly Styrol) layers which are arranged at intervals, wherein the quantity of the concrete layers is three or four; the quantity of the EPS layers is two or three; the top layer and the bottom layer are both concrete layers; the EPS layers and the poured concrete layers are fixed by small steel chisels; the concrete layers meet the C35 standard; a demand on the density of the EPS layers is 12-15kg/m<3>; and a grain size of EPS grains is 1-2mm. The damping vibration-isolating compound track bed meets the demands on strength and long-term stability, has certain elasticity, has an obvious damping vibration-isolating function and has the energy attenuation above 50-60dB.

Description

technical field [0001] The invention relates to a subway track bed with shock-absorbing and vibration-isolation functions and a construction method thereof. Background technique [0002] As a mode of transportation, the subway has the following advantages: (1), large capacity, safe, fast, punctual, convenient and comfortable; (2), no air pollution, in line with the principle of sustainable development of large cities; (3) , There is a benign interactive relationship with urban economic and social development. However, with the rapid development of subway construction, some negative effects have been discovered one after another. One of the most noteworthy is the vibration induced by the operation of the subway. The buried depth of subway tunnels is generally relatively shallow, and the vibration generated by the operation of the subway is transmitted to the tunnel support structure (tunnel foundation and lining or bridge pier and its foundation) through the track, and then...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B1/00E01B19/00
Inventor 缪林昌徐政王非吴鸿军刘书斌董光辉王军黎春林潘浩宋锦虎
Owner SOUTHEAST UNIV
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