【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。更多还原

【Abstract】 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.更多还原