建筑结构学报2012，Vol.33Issue(12)：85-91,7.
爆炸作用下钢筋混凝土柱非线性动力响应及破坏模式分析方法
Analytical approach of nonlinear dynamic responses and failure modes of RC columns under blast loads
摘要
Abstract
In order to establish an efficient approach to analyze the non-linear response and to predict failure modes of RC columns under blast loading,the cross-sectional resistance functions,including the relationships of cross-sectional moment versus curvature,average shear stress versus average shear strain and direct shear stress versus direct shear slip under monotonic loading were firstly established by the layer model,the MCFT model,and Krauthammer's model,respectively.New hysteretic models for the resistance functions under cyclic loading conditions were then proposed.The governing equations of blast-loaded RC columns,which were derived from the Timoshenko's beam theory,were discretized by the finite difference method.Finally,an explicit analytical approach for the prediction of the non-linear responses and failure modes of RC columns subjected to blast loading was proposed.The results reveal that the approach can predict the responses and failure modes of RC columns quantitatively,which is validated by the good agreement between the numerical results and the test data.关键词
爆炸作用/RC柱/数值分析/破坏模式/抗力曲线Key words
blast loading/RC column/numerical analysis/failure modes/resistance function分类
建筑与水利引用本文复制引用
方秦,程国亮,陈力..爆炸作用下钢筋混凝土柱非线性动力响应及破坏模式分析方法[J].建筑结构学报,2012,33(12):85-91,7.基金项目
国家自然科学基金项目 （）
江苏省攀登学者支撑计划项目 （）
