| 基于IDA方法的交河故城金刚宝座式塔土建筑遗址地震易损性分析 |
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| 引用本文： | 李桐林,石玉成,刘琨,卢育霞,唐洪敏,魏来.基于IDA方法的交河故城金刚宝座式塔土建筑遗址地震易损性分析[J].世界地震工程,2019,35(2):116-122. |
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| 作者姓名： | 李桐林 石玉成 刘琨 卢育霞 唐洪敏 魏来 |
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| 作者单位： | 1. 中国地震局兰州地震研究所, 甘肃 兰州 730000;2. 中国地震局(甘肃省)黄土地震工程重点实验室, 甘肃 兰州 730000 |
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| 摘 要： | 增量动力分析（IDA）作为动力形式的静力推覆法，被广泛应用于建筑结构的抗震能力分析和性能评估中，但其在土建筑遗址地震易损性分析中的应用甚少。基于IDA方法尝试对交河故城塔林区金刚宝座式塔土建筑遗址进行在地震作用下的易损性和抗震能力分析，以谱加速度Sa（T1，5%）作为地震动强度指标，最大层间位移角θmax作为结构损伤指标进行IDA分析，得到土建筑遗址在一系列调幅地震动作用下的IDA曲线、地震需求概率模型和易损性曲线，计算出模型的倒塌率和CMR值。通过以上分析得出金刚宝座式塔的易损性和抗震能力，为今后土建筑遗址抗震保护提供理论基础和分析思路。
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| 关 键 词： | 土建筑遗址 增量动力分析 层间位移角 易损性分析 |
Seismic fragility analysis of the Vajira pagoda of earth building site in Jiaohe Ancient City based on the IDA method |
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| LI Tonglin,SHI Yucheng,LIU Kun,' target="_blank" rel="external">,LU Yuxia,' target="_blank" rel="external">,TANG Hongmin,WEI Lai.Seismic fragility analysis of the Vajira pagoda of earth building site in Jiaohe Ancient City based on the IDA method[J].World Information On Earthquake Engineering,2019,35(2):116-122. |
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| Authors: | LI Tonglin SHI Yucheng LIU Kun " target="_blank">' target="_blank" rel="external"> LU Yuxia " target="_blank">' target="_blank" rel="external"> TANG Hongmin WEI Lai |
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| Affiliation: | 1. Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China;2. Key Laboratory of Loess Earthquake Engineering, Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China |
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| Abstract: | Incremental dynamic analysis (IDA) is a dynamic form of static pushover method, which is widely used in seismic capacity analysis and performance evaluation of structures, However, it is rarely used in seismic fragilityanalysis of earthen architectural ruins.This paper attempts to analyze the fragility and seismic capacity of the Vajira pagoda in the Talin district of Jiaohe Ancient City in the Jiaohe Ancient City based on the IDA method,taking the spectral acceleration Sa(T1,5%) as the intensity measure and the maximum inter-story displacement ratio θmax as the structural damage measure.The IDA curve, seismic demand probability model and fragility of the earth architectural ruins under a series of scaled ground motions are obtained,and the collapse rate and CMR value of the model were calculated.Through the above analysis, the fragility and seismic capacity of the Vajira pagoda are obtained, which provides a basis of theoretical and analysis for the earthquake protection of the earth architectural ruins. |
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| Keywords: | earth architectural ruins IDA incremental dynamic analysis inter-story displacement ratio |
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