Effect of cross-wind on spatial vibration responses of train and track system |
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Authors: | Jun Xiang Dan He and Qing-yuan Zeng |
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Affiliation: | (1) School of Civil and Architectural Engineering, Central South University, Changsha, 410075, China |
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Abstract: | By taking cross-wind forces acting on trains into consideration, a dynamic analysis method of the cross-wind and high-speed
train and slab track system was proposed on the basis of the analysis theory of spatial vibration of high-speed train and
slab track system. The corresponding computer program was written by FORTRAN language. The dynamic responses of the high-speed
train and slab track under cross-wind action were calculated. Meanwhile, the effects of the cross-wind on the dynamic responses
of the system were also analyzed. The results show that the cross-wind has a significant influence on the lateral and vertical
displacement responses of the car body, load reduction factor and overturning factor. For example, the maximum lateral displacement
responses of the car body of the first trailer with and without cross-wind forces are 32.10 and 1.60 mm, respectively. The
maximum vertical displacement responses of the car body of the first trailer with and without cross-wind forces are 6.60 and
3.29 mm, respectively. The maximum wheel load reduction factors of the first trailer with and without cross-wind forces are
0.43 and 0.22, respectively. The maximum overturning factors of the first trailer with and without cross-wind forces are 0.28
and 0.08, respectively. The cross-wind affects the derailment factor and lateral Sperling factor of the moving train to a
certain extent. However, the lateral and vertical displacement responses of rails with the cross-wind are almost the same
as those without the cross-wind. The method presented and the corresponding computer program can be used to calculate the
interaction between trains and track in cross-wind.
Foundation item: Project (2007CB714706) supported by the Major State Basic Research and Development Program of China; Project (50678176) supported
by the National Natural Science Foundation of China; Project (NCET-07-0866) supported by the New Century Excellent Talents
in University |
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Keywords: | slab track high-speed train cross-wind spatial vibration displacement dynamic responses |
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