铁道标准设计2017，Vol.61Issue(3)：32-36,5.DOI:10.13238/j.issn.1004-2954.2017.03.008
列车振动荷载下路基地基应力应变分析
Stress and Strain Analysis of Subgrade-foundation under Train Vibrating Load
常世清1
作者信息
- 1. 中铁第五勘察设计院集团有限公司,北京 102600
- 折叠
摘要
Abstract
Stress and strain are the important factors reflecting the dynamic response of subgrade-foundation system and evaluating train running safety and ride comfort. Based on Biot theory and numerical simulation, this paper employs the linear elasticity model and elastic-plastic soil constitutive model ( Pastor-Zienkiewicz Mark ModelⅢ) to orderly simulate dynamic performance of elastic and elastic-plastic sand, and uses Mat Lab and FSSI-CAS 2D software to further analyze the dynamic response of elastic and elastic-plastic water sand foundation under train vibrating load. As a result, the specific numerical values and change laws of the subgrade-foundation are obtained via calculation, which may serve as a new and practical solution.关键词
应力应变/振动荷载/数值模拟/弹性/弹塑性Key words
Stress and strain/Vibration load/Numerical simulation/Elasticity/Elastoplasticity分类
交通工程引用本文复制引用
常世清..列车振动荷载下路基地基应力应变分析[J].铁道标准设计,2017,61(3):32-36,5.
