模拟高铁轨道列车荷载附加沉降的堆载预压试验研究  

Simulated Experiment on Additional Settlement Caused by Train Load on the Track of High-Speed Railway with Preloading Method

作　　者：曹敏 

机构地区：[1]沪汉蓉铁路湖北有限责任公司,武汉430071

出　　处：《铁道标准设计》2012年第4期1-4,共4页Railway Standard Design

摘　　要：轨道列车荷载的附加沉降是高速铁路路基工后沉降分析评估的主要难点之一,采用等效堆载来模拟轨道列车荷载开展现场试验,通过实测沉降数据,分析等效结构层荷载作用下软土路基变形特征,及其对工后沉降与年沉降速率的影响规律,在此基础上,对轨道铺设的变形控制条件进行综合评价,该方法为高速铁路轨道列车荷载的附加沉降的分析评估提供了有效参考。Additional settlement caused by train load on the track is one of the main difficult points in analyzing and assessing the post-construction settlements of high-speed railway subgrade.So the on-site experiment was implemented to simulate the train load by using equivalent load.Then,based on measured settlement data,the deformation characters of soft soil subgrade under equivalent structure layer load,and their influences on post-construction settlement and on annual settlement rate are all analyzed in this paper.According to this experiment,the paper carries out comprehensive assessment to the deformation control conditions of track construction.This simulated experiment can provide effective reference to analyze and assess the additional settlement caused by train load on the track of high-speed railway.

关 键 词：高速铁路 轨道列车荷载 堆载预压 沉降评估 

分 类 号：U238[交通运输工程—道路与铁道工程] U213.1+57