Laboratory and numerical investigation on the longitudinal resistance of ballasted railway tracks with steel sleepers

Alizadeh, Mohsen; Imani, Morteza; Ali Zakeri, Jabbar

doi:10.1016/j.conbuildmat.2023.132670

Cited by 4 publications

(1 citation statement)

References 23 publications

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“…Esveld [3], Yang et al [4], Yang et al [5], Antonio et al [6], obtained the LRBB with in-situ tests and proposed the recommended value of LRBB. Zakeri et al [7], Jing et al [8], Alizadeh et al [9] conducted a series of resistance tests to investigate the influence of test method, crib level of ballast and types of sleepers on LRBB. Xiao et al [10], Liu et al [11] conducted cyclic loading experiments to analyze the effect of loading rates and displacement amplitude on LRBB with a full-scale test model of ballasted track.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Randomness of Longitudinal Resistance of Ballast Bed on Track-Bridge Interaction

Dai,

Zhang,

Liu

et al. 2023

ENG

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To get the influence of the randomness of longitudinal resistance of ballast bed (LRBB) on track-bridge interaction, the statistical law of LRBB was studied with existing test data and the Shapiro-Wilk test. Based on the principle of track-bridge interaction, a rail-sleeper-bridge-pier integrated simulation model that could consider the randomness of LRBB was established. Taking a continuous beam bridge for the heavy-haul railway as an example, the effect of the randomness of LRBB on the mechanical behavior of continuous welded rail (CWR) on bridges under typical conditions was carefully examined with a random sampling method and the simulation model. The results show that the LRBB corresponding sleeper displacement of 2 mm obeys a normal distribution. When the randomness of LRBB is considered, the amplitudes of rail expansion force, rail bending force, rail braking force and rail broken gap all follow normal distribution. As the standard deviations of the four indexes are small, which indicates the randomness of LRBB has little effect on track-bridge interaction. The distributions of the four indexes make it possible to design CWR on bridges with the limit state method.

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