[1]韩超,丁志锋,王越,等.长持时强震对电力基础设施的致灾影响[J].自然灾害学报,2018,27(06):083-90.[doi:10.13577/j.jnd.2018.0611]
 HAN Chao,DING Zhifeng,WANG Yue,et al.Disaster characteristics of long duration ground motion and its effects on electricpower facilities[J].,2018,27(06):083-90.[doi:10.13577/j.jnd.2018.0611]
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长持时强震对电力基础设施的致灾影响
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
27
期数:
2018年06期
页码:
083-90
栏目:
出版日期:
2018-12-28

文章信息/Info

Title:
Disaster characteristics of long duration ground motion and its effects on electricpower facilities
作者:
韩超123 丁志锋12 王越45 张献蒙123
1. 国网江苏省电力有限公司经济技术研究院, 江苏 南京 210008;
2. 国网江苏电力设计咨询有限公司, 江苏 南京 210008;
3. 国网江苏省电力工程咨询有限公司, 江苏 南京 210008;
4. 浙江大学 软弱土与环境土工教育部重点实验室, 浙江 杭州 310058;
5. 浙江大学 岩土工程研究所, 浙江 杭州 310058
Author(s):
HAN Chao123 DING Zhifeng12 WANG Yue45 ZHANG Xianmeng123
1. State Grid Jiangsu Electric Power Co., Ltd. Economic Research Institute, Nanjing 210008, China;
2. State Grid Jiangsu Electric Power Design Consulting Co., Ltd., Nanjing 210008, China;
3. State Grid Jiangsu Electric Power Engineering Consulting Co., Ltd., Nanjing 210008, China;
4. MOE Key Laboratory of Soft Soils and Geoenviromental Engineering, Zhejiang University, Hangzhou 310058, China;
5. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China
关键词:
长持时强震电力设施场地液化致灾特性抗震设计
Keywords:
long-term mega-earthquakeelectric power facilitiessoil liquefactiondisaster characteristicsseismic design
分类号:
X43;X9;P315.9
DOI:
10.13577/j.jnd.2018.0611
摘要:
近年全球长持时强震频发,致灾效应十分明显。震害调查表明长持时强震下电力基础设施的易损性相较于常规级地震(Mw=5.5~7.5)更为严重,研究长持时强震下电力设施的震害特点和防震减灾措施具有重要意义。通过分析国内外典型实例,总结了长持时强震典型震害特征;通过与常规级地震中电力设施易损性比较,归纳了典型长持时强震中电力设备的致灾特性,结果表明:长持时强震的强剪应力作用、场地严重液化以及由此导致的地震动频谱特性改变是电力设施受损严重的重要原因。最后,基于长持时强震的致灾特性对电力设施的抗震设计提出建议,为长持时强震作用下的抗震可靠性和防灾减灾提供借鉴和参考。
Abstract:
In recent years, long-term mega-earthquakes occurred frequently all over the world,which caused prominent disaster. It is investigated that vulnerability of power facilities during long-term mega-earthquakes is more serious than that during conventional ones (Mw=5.5~7.5). It is of great significance to study the seismic characteristics of the power facilities and its prevention and mitigation to earthquakes under long-term mega-earthquakes. Seismic damage characteristics are summarized based on collections and inductions of typical long-term mega-earthquakes around the world. Damage instances of power facilities in recent typical long-term mega-earthquakes are summarized and compared with those in conventional ones, and the disaster characteristics are further analyzed. The results show that the major causes of serious damage to the power facilities are the large shear stress of strong earthquakes, the serious liquefaction of the site and the change of the spectral characteristics of the ground motion during shaking. Finally, four suggestions are put forward to the seismic design of the power facilities based on the characteristics of the long-term mega-earthquakes, which can provide a reference for the seismic reliability and disaster prevention and mitigation of the power facilities.

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备注/Memo

备注/Memo:
收稿日期:2018-09-18;改回日期:2018-10-26。
基金项目:国网江苏省电力有限公司经济技术研究院2017年自主科技项目(JE201705)
作者简介:韩超(1984-),男,高级工程师,博士,主要从事输变电工程建设和技术研究.E-mail:hanchaohust@126.com
更新日期/Last Update: 1900-01-01