| 考虑地震动持时效应的输电塔-线体系响应研究 |
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| 引用本文： | 盖霞,田利,马瑞升,潘海洋.考虑地震动持时效应的输电塔-线体系响应研究[J].世界地震工程,2019,35(4):229-237. |
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| 作者姓名： | 盖霞 田利 马瑞升 潘海洋 |
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| 作者单位： | 1. 青岛农业大学, 山东 青岛 266109;2. 山东大学 土建与水利学院, 山东 济南 250061 |
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| 摘 要： | 研究了地震动持时效应对输电塔-线体系动力响应的影响。基于能量持时的定义方法，选取了一组包括20条长持时和20条短持时的地震动作为输入。地震动调幅至0.2g和1.2g来分别研究地震动持时效应对结构弹性和塑性响应的影响，并选取输电塔的塔顶峰值加速度、位移、主材应力以及节间位移角作为评价指标。结果表明:地震动持时效应对所选取的评价指标具有不同的影响规律，在输电塔-线体系动力响应研究中持时效应不容忽视。可以为输电塔的抗震设计提供有益的参考。
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| 关 键 词： | 地震动持时效应 输电塔线体系 地震动强度 结构响应 动力响应 |
Response analysis of transmission tower-line system considering seismic duration effects |
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| GAI Xia,TIAN Li,MA Ruisheng,PAN Haiyang.Response analysis of transmission tower-line system considering seismic duration effects[J].World Information On Earthquake Engineering,2019,35(4):229-237. |
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| Authors: | GAI Xia TIAN Li MA Ruisheng PAN Haiyang |
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| Affiliation: | 1. Qingdao Agricultural University, Qingdao 266109, China;2. School of Civil Engineering, Shandong University, Jinan 250061, China |
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| Abstract: | This paper presents the influence of seismic duration effects on the dynamic responses of transmission tower-line system. According to the definition of seismic energy duration, a suit of strong ground motions including 20 long-duration and 20 short-duration waves are preselected as the input of the transmission tower-line system. These selected waves are scaled to 0.2g and 1.2g to investigate the influences of seismic duration on the elastic and plastic structural responses, respectively. The peak acceleration, peak displacement, stress of major members and inter-segment drift ratios are selected as the evaluating indicators in the study. The numerical results demonstrate that seismic duration effects,which cannot be ignored in the study of dynamic response of transmission tower-line system, have different influence rules on the selected evaluation indicators. This research can provide beneficial information for the seismic resistant design of transmission towers. |
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| Keywords: | seismic duration effect transmission tower-line system intensity of ground motion structural response dynamic analysis |
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