摘要
本文用三元件粘弹性流变模型模拟路基土体的流变特性，根据施工期实测资料，采用粘弹性有限元和非线性二乘法阻尼优化方法，反演路基土体的地质力学参数，然后计算路面铺筑后的工后沉降，编制了土体粘弹性有限元正反分析程序，并对沪宁高速公路某路段进行了反分析计算，得到了满意的结果。
A viscous elastic rheological model of 3 parts is used to simulate the rheology of roadbed soil. From the observation data obtained during construction, the geological mechanical parameters are obtained by inversive analyiss, adopting viscous elastic FEM and non linear optimal method and the roadbed settlement after construction is calculated. Then a back analysis program of viscous elastic FEM for soil is given. The back analysis was performed for Shanghai Nanjing speedway based on the program and the satisfactory results were obtained.
出处
《工程地质学报》
CSCD
1998年第4期340-343,共4页
Journal of Engineering Geology
关键词
反分析
粘弹性
地质参数
路基沉降
公路
Back analysis,Viscous elasticity, Geological parameters, Roadbed settlement.
