拓宽路堤不均匀沉降敏感性因素仿真分析  

An Emulation Analysis on Sensitivity of Uneven Settlement of Widening Embankment

作　　者：吴瑞麟[1] 余海洋[1] 石立万[1] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《中国市政工程》2007年第3期19-21,共3页China Municipal Engineering

摘　　要：采用FLAC3D三维有限差分分析软件,结合武汉市三环线武黄高速公路共线段拓宽工程,对拓宽路堤变形进行仿真分析。通过土工格栅加筋层数对不均匀沉降的敏感性分析,证明加筋层数对不均匀沉降有显著影响。对新路堤土体相关参数进行敏感性分析,得出土体剪切模量最为敏感的结论。The paper uses three-dimensional explicit finite-difference program-FLAC3D to do emulation analysis deformation of widening embankment combining with the mutual segment of Wuhuang expressway and the third annular urban road of Wuhan.First,the analysis examines that the layers of geogrid have remarkable influence to the uneven settlement by analyzing sensitivity of the layers of geogrid.Then,by analyzing sensitivity of the mutuality parameter of soil of the new embankment,it comes to a conclusion that the shear in all parameters of soil is the most sensitive factor to the uneven settlement.

关 键 词：高速公路 拓宽 土工格栅 不均匀沉降 仿真分析 

分 类 号：U416.12[交通运输工程—道路与铁道工程]