中国铁道科学2011，Vol.32Issue(3)：52-57,6.
考虑弹塑性结构退化和捏拢滑移效应的光滑滞回模型
A Smooth Hysteretic Model Considering Degrading and Slip Pinching Effects of Inelastic Structures
摘要
Abstract
Based on Bouc-Wen differential hysteretic model, an improved smooth hysteretic model which can take account of stiffness degradation, strength decay and slip pinching effects of inelastic structures is proposed. In the proposed model, the stiffness degrading rate is controlled by parameters associated with the maximum displacement ductility attained in the cyclic loading history. The damage index based on displacement and dissipation energy is adopted to describe strength decay of the inelastic structure. By introducing the slip-lock element, the pinching characteristic is included in the model. Nine control parameters are used to control the hysteresis loop shape in the proposed model, but it is possible to generate a large variety of different shapes of the hysteresis loops through modifying suitably only six of them associated with stiffness degradation, strength decay and slip pinching characteristics. The proposed hysteretic model is used to simulate the seismic tests of reinforced concrete columns characterized by bending failure and shear failure modes. It is found that the model can simulate the hysteresis loops of reinforced concrete members with different failure modes well.关键词
钢筋混凝土/弹塑性结构/刚度退化/强度退化/捏拢滑移/滞回模型/抗震分析Key words
Reinforced concrete/ Inelastic structure/ Stiffness degradation/ Strength decay/ Slip pinching/Hysteretic model/ Seismic analysis分类
建筑与水利引用本文复制引用
赵冠远,安明结,季文玉,王艳..考虑弹塑性结构退化和捏拢滑移效应的光滑滞回模型[J].中国铁道科学,2011,32(3):52-57,6.基金项目
国家自然科学基金资助项目(50778017) （50778017）
