Stability Chart for Cavity Existence Below Railway Track

4th International Conference on Road and Rail Infrastructure (CETRA 2016)

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Title Stability Chart for Cavity Existence Below Railway Track
Creator Yujin Lim; Department of Civil, Environmental and Rairoad Engineering, PaiChai University
Jin Wook Lee; Korea Railway Research Institute
Hojin Lee; PaiChai University, Korea
Sang Hyun Lee; PaiChai University, Korea
Subject cavity; FEA; subway; trackbed stability; influence factor
Description Cavities are found many times recently in downtown of metropolitan cities due to old and damaged pipes installed in the ground. The cavities are generated by spilling out of water from pipes mostly. The cavities generated below subway track can make irregularities and instability of the track. In this study, a finite element program ABAQUS is used to analyze the structural behavior of the track in cases of existence of cavities in subway trackbed foundation. It is found from the FE analysis that there can be a lot of differences in displacement of the track, depending on soil modulus, depth and diameter of cavity. The most important influence factors on the structural stability of track can be provided from the analysis in case of cavity existence in the trackbed foundation. Influence index is proposed in this study for design purpose by investigating geometrical cavity location in the ground that is to be used for checking stability of railway track.
Publisher CETRA 2016
Contributor ETRI, KRRI
Date 2017-02-28 15:15:27
Type Peer-reviewed Paper
Source CETRA 2016; 4th International Conference on Road and Rail Infrastructure
Language en
Rights Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference. <br /> <strong>b)</strong> Submitted full papers will be published in the book of proceedings "Road and Rail Infrastructure IV" as well as in digital form (on a CD). Conference organiser is allowed to publish author's names, institution and country as well as the paper abstract on the conference web site.

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