| 基于性能的钢筋混凝土框架剪力墙结构地震易损性分析 |
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| 引用本文： | 马肖彤,陆华,何妍亭,马艳.基于性能的钢筋混凝土框架剪力墙结构地震易损性分析[J].西北地震学报,2020,42(6):1386-1390. |
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| 作者姓名： | 马肖彤 陆华 何妍亭 马艳 |
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| 作者单位： | 北方民族大学 土木工程学院, 宁夏 银川 750021 |
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| 基金项目： | 宁夏高等学校科学技术研究项目优秀青年教师培育基金项目（NGY2020054）；宁夏自然科学基金项目（2020AAC03223，2018AAC03114）；宁夏青年科技人才托举工程（TJGC2019001）；宁夏回族自治区重点研发计划项目（2018BEG03009）；宁夏回族自治区重点研发计划项目引才专项（2018BEB04006）；北方民族大学校级一般项目（2019XYZTM01，2019XYZTM08）；国家档案局科技项目（2017-X-43） |
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| 摘 要： | 以某典型的20层钢筋混凝土框架剪力墙结构作为研究对象，研究基于性能的RC框架剪力墙结构易损性分析方法。首先选择合适的地震动记录，以0.2g为步长进行调幅后，建立300个结构-地震动样本空间，并确定结构损伤指标和性能参数；然后应用增量动力分析方法计算结构的地震动力响应，选择基本周期加速度反应谱为地震动参数，以研究结构反应的不确定性，并深入分析地震动参数与结构地震需求参数的关系；在此基础上，建立该结构基于加速度反应谱的易损性曲线进行结构易损性分析与评估。结果表明：随着地震动强度的增大，IDA曲线由单调增加变为非单调增加，分位曲线（16%，50%和84%）可以准确地衡量结构的性能；框剪结构在地震作用下的抗震性能表现良好，随着地震强度的增长，各性能超越概率大小的增长速度是不同的。
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| 关 键 词： | 性能水平 地震易损性 框架剪力墙 基于性能 |
| 收稿时间： | 2020/6/3 0:00:00 |
Performance-based Seismic Fragility Analysis of a Reinforced-concrete Frame-Shear Wall Structure |
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| MA Xiaotong,LU Hu,HE Yanting,MA Yan.Performance-based Seismic Fragility Analysis of a Reinforced-concrete Frame-Shear Wall Structure[J].Northwestern Seismological Journal,2020,42(6):1386-1390. |
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| Authors: | MA Xiaotong LU Hu HE Yanting MA Yan |
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| Institution: | School of Civil Engineering, North Minzu University, Yinchuan 750021, Ningxia, China |
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| Abstract: | In this study, we analyzed the performance-based fragility of a typical 20-story reinforced-concrete frame-shear wall structure. First, the appropriate ground motion records were obtained and the amplitude was adjusted in step lengths of 0.2g. We then established 300 structure-ground motion sample spaces and determined the structural damage indexes and performance parameters. The incremental dynamic analysis method was used to calculate the structural seismic response. To study the uncertainty of the structural response, as the ground motion parameter, we used the acceleration response spectrum of the fundamental period and then analyzed the relationship between the structural seismic demand and the ground motion. On this basis, we established the fragility curve of the structure based on the acceleration response spectrum for the analysis and evaluation of its structural fragility. The results showed that with increases in the ground motion intensity, the IDA curve changes from a monotonic increase to a non-monotonic increase. The IDA curves (16%, 50%, and 84%) can be used to accurately measure the performance of the structure. The frame-shear structure was found to perform well under earthquake. With increases in the seismic intensity, the growth rate of the exceedance probability differs. |
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| Keywords: | performance level seismic fragility frame-shear wall performance-based |
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