| 基于位移及滞回耗能的结构抗震性能评估新方法 |
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| 引用本文： | 易伟建,尹犟.基于位移及滞回耗能的结构抗震性能评估新方法[J].湖南大学学报(自然科学版),2009,36(8). |
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| 作者姓名： | 易伟建 尹犟 |
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| 作者单位： | 湖南大学,土木工程学院,湖南,长沙,410082 |
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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： | 根据Pushover分析的基本假定,推导了多自由度体系结构与其等效单自由度体系之间位移及能量的近似转换关系;在此基础上,采用Park-Ang模型对结构在地震作用下的整体损伤指标进行合理估计,并据此对结构的抗震性能作出综合评估.本文方法能同时体现地震作用下结构的最大变形及滞回耗能总量对其损伤造成的影响,具有广阔的工程应用前景.为验证该方法的准确性,对一典型的7层混凝土框架结构进行了算例验证.结果表明,算例结构的整体损伤指标估计误差仅为7.0%左右,其中位移项估计误差约为6.6%,能量项估计误差约为9.9%.
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| 关 键 词： | 地震反应 耗能 Park-Ang模型 |
A New Method for Evaluating Seismic Performance based on Displacement and Hysteretic Energy |
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| YI Wei-jian,YIN Jiang.A New Method for Evaluating Seismic Performance based on Displacement and Hysteretic Energy[J].Journal of Hunan University(Naturnal Science),2009,36(8). |
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| Authors: | YI Wei-jian YIN Jiang |
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| Institution: | YI Wei-jian,YIN Jiang(College of Civil Engineering,Hunan Univ,Changsha,Hunan 410082,China) |
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| Abstract: | According to the basic hypothesis employed in pushover analysis procedures,The approximate relationships for converting the hysteretic energy between the MDOF system structure and its equivalent SDOF system is established.Based on it,the Park-Ang model is applied to estimate the overall damage index of structures under seismic action.According to the estimated results,the seismic performances of structures are evaluated synthetically.The method developed can simultaneously consider the effects of the maximu... |
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| Keywords: | seismic response energy dissipation Park-Ang model |
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