摘要
有限单元法是计算路堤沉降常见的数值计算方法,其土体模型参数的准确性是计算结果可靠性高的保证。软土SSM模型是岩土工程分析计算中常用的一种弹塑性模型。文章针对模型参数敏感性进行大量非线性有限元计算,得到了各参数与路堤沉降和侧向位移之间的关系,确定了该模型中影响软基路堤沉降和侧向位移的主要参数。
Finite element method is a common method in settlement calculation of embankment, and soil model parameters are critical to the reliability of the numerical results. The Soft Soil model based on the modified Cam-Clay model, is a elastic-plastic model that is widely used in the geotechnical engineering. Based on a lot of numerical simulation exercises, this paper performes a sensitivity analysis of the model parameters. The relationships of various parameters with vertical embankment settlement and lateral displacement are obtained, and the critical parameters which have major influences on the numerical results were defined.
出处
《塑性工程学报》
EI
CAS
CSCD
北大核心
2007年第4期156-161,共6页
Journal of Plasticity Engineering
关键词
软土SSM模型
模型参数
有限元
路堤沉降
敏感性分析
soft-soil model
model parameters
finite element
embankment settlement
sensitivity analysis
