摘要
本文总结了现有的混凝土本构关系,经过大量实例运算和理论分析,修正了基于内时理论的混凝土本构关系,并成功地运用于钢管混凝土压、弯、扭及其组合的复杂受力状态工作性能的分析计算。该模型具有理论依据明确,计算机时经济,参数易确定的优点,从而为进行钢管混凝土构件的数值分析奠定了基础。
This paper sums up the present concrete constitutive relations and introduces how they are used in analysing and calcutating the CFST members under compression,bending moment, torsion and their combination.The concrete constitutive relations based on the endochronic theory is revised.A model is presented,which is well-based in theory,economical in the CPU-time and easy for the parameters determination.The above advantages make the model provide integral analysis for the CFST members.
关键词
钢管混凝土
核心混凝土
本构关系
mathematical model
CFST
core concrete
endochronic theory
constitutivl relation
