摘要
从引起车辆振动的几何不平顺条件入手，用一与不平顺管理标准相应的激振力来模拟列车竖向动荷载。通过非线性数值分析，探讨了路基在不平顺条件下的动态响应。揭示了路基不同部位刚度变化对基面变形、动应力及加速度的影响规律。并与部分实测、计算资料进行了对比。
Start with the geometric irregularity which causes the vehicle dynamics,this paper uses an exciting force corresponding with the manage strandard of irregularity to simulate the vertical dynamic load of the train.Using non linear numerical analyses,this paper researches the dynamic response of subgrade in geometric irregular condition,and reveals the influence law by which the stiffness changes of different parts of subgrade cause the deformation of basesurface,the dynamic stress and the acceleration.In some concerned parties,the calculated results are compared with the other data.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
1999年第2期84-88,共5页
Journal of the China Railway Society
基金
铁道部科技基金
关键词
高速铁路
路基
几何不平顺
动力分析
high speed railways
subgrade
Geometric irregularity
dynamic analysis
