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。邓肯-张E-B模型是岩土工程分析计算中常用的一种非线性弹性模型。本文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变形的主要参数。
Soil model parameters are critical in assuring reliability of numerical results of commonly used finite element method for simulating settlement of embankment. The Duncan - Chang E - B model, a nonlinear elastic model widely used in the geotechnical engineering, was chosen in this paper. Based on the sensitivity analysis of model parameters, relationships of various parameters with vertical embankment settlement and lateral displacement were obtained. The critical parameters were also determined based on the sensitivity analysis.
出处
《工程地质学报》
CSCD
2005年第4期563-567,共5页
Journal of Engineering Geology
关键词
邓肯-张模型
模型参数
有限元
路堤沉降
敏感性分析
Duncan - Chang E - B model, Model parameters, Finite element, Embankment settlement, Sensitivity analysis
