Damage analysis of spot replacement sleepers interspersed in ballasted railway tracks

Sakdirat Kaewunruen, Kritditorn Chamniprasart

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The interspersed pattern sleeper, a spot replacement of old timber sleeper with concrete or composite counterparts, of railway track is often used as a temporary maintenance for secondary railway lines such as yards, balloon loops or siding. However, their negative effect on the railway has not been taken into account. It is observed that performance of interspersed tracks can quickly deteriorate after some years. On this ground, a nonlinear simulation of interspersed sleeper railway is conducted using the finite element program, STRAND7, so that the structural damage analysis can be conducted. Two moving point loads representing an axle load along each rail has been established to investigate the worst-case, potential actions for premature damage of sleepers and differential settlement of the track. Dynamic displacement and acceleration of sleeper are then evaluated by varying the speed of the moving force from 5 km/h to 120 km/h and the interspersed patterns to identify the causes of track deterioration and track differential settlement. The insight strongly demonstrates the potential cases and engineering guideline for interspersed railway tracks.
Original languageEnglish
Title of host publicationThe 29th Nordic Seminar on Computational Mechanics
EditorsRagnar Larsson
Place of PublicationGothenburg
PublisherNordic Association for Computational Mechanics
Number of pages4
Publication statusPublished - 29 Oct 2016
EventThe 29th Nordic Seminar on Computational Mechanics - Chalmers, Gothenburg, Sweden , Gothenburg, Sweden
Duration: 26 Oct 201628 Oct 2016

Publication series

NameForskningsrapporter (Tillämpad mekanik)


ConferenceThe 29th Nordic Seminar on Computational Mechanics
Internet address


  • Damage analysis
  • ballasted railway track
  • interspersed track
  • spot replacement sleeper
  • railway sleeper


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