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作 者:王宏伟 姚艳武 陈学良[2] WANG Hongwei;YAO Yanwu;CHEN Xueliang(College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;Institute of Geophysics,China Earthquake Administration,Beijing 100081,China)
机构地区:[1]东华大学环境科学与工程学院,上海201620 [2]中国地震局地球物理研究所,北京100081
出 处:《东华大学学报(自然科学版)》2023年第3期112-121,共10页Journal of Donghua University(Natural Science)
基 金:国家重点研发计划资助(2019YFC1509403)
摘 要:针对多维地震动的近场效应和场地条件等因素,选取6类不同特性的地震动数据输入到剪力墙结构数值模型中进行动力时程分析,考虑结构构件及非结构构件损伤,并基于震时功能损失和震后功能恢复时间分析不同特性地震动对剪力墙结构抗震韧性的影响。结果表明:梁作为主要塑性耗能结构构件,功能损失占比最大;加速度敏感型非结构构件损伤受近断层地震动竖向分量影响较大;基岩场地条件下速度脉冲效应对结构抗震韧性的影响不明显,而硬土和软土场地下含速度脉冲地震动加剧了结构的功能损失(总功能损失比分别达13.3%和13.0%),延长了功能恢复时间。Six kinds of ground motions were selected according to the factors such as near-field effect and site conditions,and the dynamic time history analysis of a shear wall structure was done.The effects of various ground motions on the seismic resilience of the shear wall structure were analyzed based on the structural and non-structural members function loss during an earthquake and function recovery time after an earthquake.The results show that beams,as the leading plastic energy-consuming structural element,have the highest percentage of functional loss.The vertical component of near-fault ground motion greatly influences the damage of acceleration-sensitive structural members.In the bedrock site,the influence of the pulse-like effect on the seismic resilience of the structure is not apparent.In the hard soil and soft soil sites,the ground motion with the pulse-like increases the functional loss of the structure(the total function loss ratio reaches 13.3%and 13.0%,respectively)and prolongs the available recovery time.
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