摘要
以哈大线为依托,根据实测的断面数据,采用流变力学模型,利用有限元软件ANSYS对未经防冻胀处理的路基在冻胀条件下的沉降变形进行分析计算.结果表明:路基未经冻胀处理时,在ZK静载作用下,冻胀状态下路基顶面的最大竖向位移超过了客运专线对路基工后沉降的要求.为确保列车平稳、安全运行,必须采取一定的防冻胀处理措施.
Based on Haerbin-Dalian high speed railway , depending on the section data , adopting rheological model and using ANSYS , this paper carries out a number of computations on deformation of road base without measures against frozen expansion .The results show that without frozen expansion measures , the maximum vertical displacement of the subgrade ’ s surface surpasses the requirements of Passenger Special Line under condition of ZK static load .In order to ensure the safe operation of the trains , certain anti-freezing measures need to be taken.
出处
《兰州工业学院学报》
2014年第3期21-23,43,共4页
Journal of Lanzhou Institute of Technology
关键词
路基
冻胀
沉降
数值模拟
subgrade
frozen expansion
settlement
numerical simulation
