铁道标准设计2017，Vol.61Issue(3)：42-46,5.DOI:10.13238/j.issn.1004-2954.2017.03.010
高速铁路空沟减隔振措施数值分析与模型试验
Numerical Analysis and Model Test of Vibration Reduction by Open Trench on High-Speed Railway
摘要
Abstract
Open trench has been widely used in high speed railway track vibration reduction due to its effectiveness and easy construction. This paper focuses on the numerical analysis of vibration reduction at the fixed location a certain distance from vibration source with finite element software ABAQUS. Under similar condition, the effect of vibration reduction by means of open trench is analyzed and the influencing factors are identified through scale model tests. The results of comparative analysis show that the propagation of vibration wave in the soil can be effectively blocked by open trench and the vibration acceleration is obviously slowed down; the depth of open trench impacts greatly the effect of vibration reduction at the fixed location a certain distance from the vibration source, and the vibration acceleration attenuation of the area can be reduced by 20% ~60%;the width of the open trench has less impact on vibration reduction at the fixed location a certain distance from vibration source and the increase of the width of the area can hardly reduce the vibration acceleration l.关键词
高速铁路/空沟减隔振/数值分析/无限元边界/模型试验Key words
High-speed railway/Vibration reduction by open trench/Numerical analysis/Infinite element boundary/Model test分类
交通工程引用本文复制引用
刘晶磊,张雷刚,宋绪国,崔宏环,侯恩品,赵敏..高速铁路空沟减隔振措施数值分析与模型试验[J].铁道标准设计,2017,61(3):42-46,5.基金项目
河北省青年拔尖人才计划项目(BJ2016018) （BJ2016018）
张家口市科技局科技计划项目(1511074B) （1511074B）
