| 考虑弹塑性结构退化和捏拢滑移效应的光滑滞回模型 |
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| 引用本文： | 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). |
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| 作者姓名： | 赵冠远 安明结 季文玉 王艳 |
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| 作者单位： | 北京交通大学,土木建筑工程学院,北京,100044 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 基于Bouc-Wen微分滞回模型,提出考虑弹塑性结构刚度退化、强度退化和捏拢滑移效应的光滑滞回模型.在该滞回模型中,弹塑性结构滞同反应的刚度退化程度由与加载历史上最大位移延性相关的参数控制,强度退化规律通过引入基于变形和滞回耗能双参数指标的损伤指数描述,捏拢滑移特征通过增加滑移-锁定单元模拟.滞回模型的控制参数为9个,一般只需调整其中与刚度退化、强度退化和捏拢滑移特征相关的6个参数便可模拟多种形状的滞回曲线.应用该滞回模型对弯曲破坏型和剪切破坏型钢筋混凝土柱抗震试验进行数值仿真,结果表明该滞回模型可较好地模拟不同破坏模式钢筋混凝土构件的滞回曲线.
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| 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 |
A Smooth Hysteretic Model Considering Degrading and Slip Pinching Effects of Inelastic Structures |
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| ZHAO Guanyuan,AN Mingzhe,JI Wenyu,WANG Yan.A Smooth Hysteretic Model Considering Degrading and Slip Pinching Effects of Inelastic Structures[J].China Railway Science,2011,32(3). |
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| Authors: | ZHAO Guanyuan AN Mingzhe JI Wenyu WANG Yan |
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| Affiliation: | ZHAO Guanyuan,AN Mingzhe,JI Wenyu,WANG Yan(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China) |
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| 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 intr... |
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| Keywords: | Reinforced concrete Inelastic structure Stiffness degradation Strength decay Slip pinching Hysteretic model Seismic analysis |
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