动荷载作用下路基沉降规律试验研究  

Study on settlement law of subgrade caused by dynamic loading action

作　　者：李利飞[1] 谢方媛[1] 许道军[1] 张立钊[1] 

机构地区：[1]河北工程大学资源学院,河北邯郸056038

出　　处：《河北工程大学学报（自然科学版）》2012年第2期7-10,共4页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：河北省交通运输厅科技计划项目(Y-070229)

摘　　要：以京化高速公路二期工程为研究对象,采用现场测试、室内试验等方法对路基填料的工程特性进行分析,并借助非线性有限元分析软件ANSYS进行仿真模拟,研究动荷载作用下路基沉降规律。结果表明,路基沉降受速度效应与加载循环效应双重因素的影响;沿深度方向路基的沉降呈减小的趋势;路基沉降量极值点位于循环荷载加载点正下方,最大沉降量约为9.624 cm。Taking the second -term engineering of Jing -Hua freeway as research object, laws of sub- grade settlement under dynamic loading through analyzing the engineering properties of subgrade - fill- ing was studied by taking tests on the spot and laboratory experiments and simulating with the finite el- ement software ANSYS. The test results show that the subgrade settlement is affected by both the speed and load cycles; the subgrade extremal point of subgrade settlement 9. 624 cm. settlement decrease with the depth of subgrade increasing; the is below the cyclic loading and the maximum settlement is about

关 键 词：动荷载 路基 沉降规律 有限元分析 

分 类 号：U416[交通运输工程—道路与铁道工程]