摘要
提出一个三向受压混凝土的本构关系模型。基于亚弹性正交异性理论，采用Ottosen的破坏准则，把Darwin和Pecknold的等效单轴应变概念进一步推广到三维非线性增量应力—应变关系中。模型的特点是：它建立在前人的研究成果基础上，所有的参数均建立在试验数据的基础上，只需输入少数的材料参数便可确定本构模型，因此便于在实际工程分析中应用。
A constitutive relation model of concrete subjected to triaxial compressive stresses is presented. The proposed material model is based on a hypoelastic orthotropic approach. The criterion proposed by Ottosen is adopted herein and the equivalent uniaxial strain concept of Darwin and Pecknold is incorporated further to the nonlinear three - dimensional incremntal stress - strain relationship. The model has the following characteristics: it is based on the research achievements of previous researchers and all the parameters are obtained form experimental data; and very a few inputted material paramter is needed to define the constitutive model, thus it is convenient to be employed in the analysis of engineering structures.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1998年第6期622-626,共5页
Journal of Tongji University:Natural Science
基金
上海市科技发展基金
关键词
混凝土
本构关系
三向受压
Confined concrete
Hypoelastic orthotropic approach
Constitutive relationship
