高速列车运行引起路基-场地体系振动特性研究  

Analysis of vibration characteristics on subgrade-site under vibrating load induced by high-speed train

作　　者：刘雪珠[1] 陈国兴[1] 陈斌[1] 

机构地区：[1]南京工业大学岩土工程研究所,南京210009

出　　处：《岩土力学》2007年第S1期773-777,共5页Rock and Soil Mechanics

基　　金：江苏省六大人才高峰目(No.06-F-008)。

摘　　要：基于子结构法思想,把轨枕-路基-场地体系从列车-轨道-路基-场地这一耦联的大系统中分离出来。以荷载输入等同于一种边界条件,采用高速列车以265km/h和300km/h的速度运行时现场实测竖向速度时程作为荷载输入尝试,以ABAQUS软件为计算平台,考虑土的动力非线性特性,研究了以这两种速度不同组合的双线和单线高速列车运行引起路基-场地体系动力反应,初步探讨了其规律。Based on the substructural analysis of soil-structural interaction,sleeper-subgrade-site is treated as a subsystem and separated from the coupled system of train-rail-subgrade-site,and the input of dynamic load is considered as a boundary condition. As a trial,the measured time history of the vertical velocity of the sleeper induced by high-speed train in-situ experiments is used as an input of dynamic load. By means of this method and ABAQUS software,the parametric studies of dynamic response of subgrade-site system induced by high-speed train are completed by making non-linear numerical analyses and considering train running condition on up-link and down-link under the different combination with train speed 265 km/h and 300 km/h. Some preliminary regularity is presented.

关 键 词：高速列车 场地振动 动力反应 ABAQUS软件 

分 类 号：U211.3[交通运输工程—道路与铁道工程]