大连理工大学学报Issue(1)：47-53,7.DOI:10.7511/dllgxb201501007
大骨料混凝土率型内时损伤本构模型
Rate-dependent endochronic damage constitutive model for large aggregate concrete
摘要
Abstract
Based on the theory of endochronic and damage mechanics,the effect of aggregate size and strain rate on the damage variables of concrete is analyzed.A rate-dependent endochronic damage constitutive model of large aggregate concrete is proposed.The proposed model is used to analyze the multiple axis dynamic stress-strain curves.Compared with experimental data it is shown that the analytical result is in good agreement with the experimental data,and it can be used as the basis for dynamic properties research of large aggregate concrete.Finally,nonlinear seismic responses of a concrete arch dam are analyzed with this model and the model of endochronic and damage mechanics with normal concrete.The experimental results show that the effect of strain rate and aggregate size on the strength and stiffness of concrete structures is remarkable and should be paid attention to in analysis.关键词
大骨料混凝土/应变率/内时损伤本构模型/拱坝Key words
large aggregate concrete/strain rate/endochronic damage constitutive model/arch dam分类
建筑与水利引用本文复制引用
宋玉普,王丽伟,王浩..大骨料混凝土率型内时损伤本构模型[J].大连理工大学学报,2015,(1):47-53,7.基金项目
国家自然科学基金资助项目(51079019) （51079019）
