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首页> 外文期刊>Journal of Constructional Steel Research >Probabilistic seismic demand model and fragility analysis of transmission tower subjected to near-field ground motions
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Probabilistic seismic demand model and fragility analysis of transmission tower subjected to near-field ground motions

机译：近场地面运动经过近场地面运动的传输塔的概率地震需求模型及脆弱性分析

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摘要

Electricity transmission system is well recognized as a lifeline system in the modern society, and its failures in past major earthquakes have aroused the concern about its seismic vulnerability. In the present study, fragility curves are developed to assess the vulnerability of a typical transmission tower subjected to near-field ground motions. A probabilistic seismic demand model (PSDM) is constructed for the transmission tower in terms of the maximum inter-segment drift ratio (ISDR) and the spectral acceleration (S-a) at the fundamental period of the structure. Pushover analysis is performed to define the capacity limit states for the transmission tower, which are serviceability, damage control and collapse prevention in this research. The data for the PSDM are acquired by using incremental dynamic analyses (IDAs) of a suite of seismic records. Additionally, the influence of the seismic incident angles and the coupling effect between the transmission tower and lines on the structural fragility are further investigated. The results quantify the seismic vulnerability of the transmission tower and demonstrate the influence of the seismic incident angles and the dynamic coupling effect between the transmission tower and lines. (C) 2019 Elsevier Ltd. All rights reserved.
机译：电力传动系统被公认为现代社会的生命线系统，其过去的主要地震中的失败引起了对其地震脆弱性的关注。在本研究中，开发了脆弱曲线以评估经受近场地面运动的典型传输塔的脆弱性。在结构的最大段频率漂移比（ISDR）和结构的基本周期，在变速器塔上为传输塔构成概率的地震需求模型（PSDM）。进行推送分析以定义传输塔的容量限制状态，这是该研究中的可用性，损伤控制和防止的可用性，损伤控制和塌陷。通过使用围绕地震记录的增量动态分析（IDA）来获取PSDM的数据。另外，进一步研究了地震入射角和透射塔与结构脆性线之间的耦合效应的影响。结果量化了传输塔的地震脆弱性，并证明了抗震塔和线路之间的地震入射角的影响和动态耦合效应。 （c）2019 Elsevier Ltd.保留所有权利。

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  • 来源
    《Journal of Constructional Steel Research》 |2019年第5期|266-275|共10页
  • 作者

    Tian Li; Pan Haiyang; Ma Ruisheng;

  • 作者单位

    Shandong Univ Sch Civil Engn Jinan 250061 Shandong Peoples R China;

    Shandong Univ Sch Civil Engn Jinan 250061 Shandong Peoples R China;

    Shandong Univ Sch Civil Engn Jinan 250061 Shandong Peoples R China|Curtin Univ Sch Civil & Mech Engn Ctr Infrastruct Monitoring & Protect Kent St Bentley WA 6102 Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Transmission tower; Fragility curves; PSDM; Pushover analysis; IDA;

    机译：传输塔;脆弱曲线;PSDM;推动分析;IDA;

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