The relation between static and dynamic shakedown limits of slab track substructures under moving train loads

Juan Wang, Shu Liu

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

Shakedown limits can be used to predict different long-term responses of geo-structures under repeated moving loads. Based on lower-bound shakedown theorems, static and dynamic shakedown limits were obtained respectively for slab substructures under train loads of various speeds. The determination of the dynamic shakedown limit is relatively complicated due to the calculation of stable dynamic elastic stresses in the substructures. It was found the change of the dynamic shakedown limit from the corresponding static one is highly dependent on soil friction angle and a velocity factor (train speed over critical speed of the substructure). A simple relation between the dynamic shakedown limits at various speeds and the static one is then proposed which can serve as an efficient approach to estimate the influence of the train speed on the long-term performance of substructure.

Original languageEnglish
Title of host publicationSpringer Series in Geomechanics and Geoengineering
EditorsHai-Sui Yu, Wei Wu
PublisherSpringer Verlag
Pages1742-1745
Number of pages4
Edition216849
ISBN (Print)9783319971148
DOIs
Publication statusPublished - 2018
EventChina-Europe Conference on Geotechnical Engineering, 2016 - Vienna, Austria
Duration: 13 Aug 201616 Aug 2016

Publication series

NameSpringer Series in Geomechanics and Geoengineering
Number216849
ISSN (Print)1866-8755
ISSN (Electronic)1866-8763

Conference

ConferenceChina-Europe Conference on Geotechnical Engineering, 2016
Country/TerritoryAustria
CityVienna
Period13/08/1616/08/16

Keywords

  • Critical speed
  • Shakedown
  • Slab track substructures

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials

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