铁道科学与工程学报2016，Vol.13Issue(7)：1247-1252,6.
基于统计损伤本构模型的改进接触面模型研究
Research on improved contact surface constitutive model based on statistical da mage constitutive model
摘要
Abstract
Considering the initial shear stiffness depth effect of the pile-soil interface and keeping the uniformity along the contact surface thickness direction of the shear stress and shear strain,the paper put forward the zero-thickness zone contact surface constitutive model based on the statistical damage constitutive model.According to the shear experiment data ,we obtained the simulation curves fitting parameters of the improved constitutive mod-el under different normal stresses .Calculation results indicated that the zero-thickness zone contact surface con-stitutive model developed was correct ,which could simulate reasonably the mechanical behavior of the pile-soil interface and describe the nonlinearity of the pile -soil contact surface shear stiffness.It also has strong applica-bility,relatively high theoretical and practical application value.关键词
桩土界面/无厚度单元/统计损伤本构模型/拟合参数Key words
pile-soil interface/zero-thickness zone/statistical damage constitutive model/fitting parameters分类
建筑与水利引用本文复制引用
李赛,汪优,秦志浩,刘建华..基于统计损伤本构模型的改进接触面模型研究[J].铁道科学与工程学报,2016,13(7):1247-1252,6.基金项目
国家自然科学基金资助项目（51308552，51408060）；湖南省高校创新平台开放基金资助项目 （）
