摘要
基于有限单元法,建立了线-桥-墩一体化桥上无缝线路计算模型,考虑相邻轨条及桥墩纵向刚度的影响,计算了一根钢轨折断后的开口量,并分析比较了不考虑相邻轨条限制作用、不考虑桥墩纵向刚度、多根轨条同时折断等简化算法的计算偏差,为桥上是否设置钢轨伸缩调节器提供了依据。
Based on the finite element method(FEM), an integrative rail-bridge-pier calculation model of CWR on bridge is developed. Allowing for the influence of adjacent rail and longitudinal stiffness of pier, the value of a rail break is calculated. Moreover, the inaccuracy of simple calculation method that considers multi-rail breaks at the same time, without regarding to the restriction of adjacent rail and longitudinal stiffness of pier, is analyzed. This study provides a basis for setting rail expansion joint on bridge.
出处
《交通运输工程与信息学报》
2004年第2期47-52,共6页
Journal of Transportation Engineering and Information
