虎门大桥在河源4.8级地震中记录分析

英文篇名：Analyses of strong motion records at Humen bridge in 2013 Heyuan M 4.8 earthquake
中文刊名：地震地磁观测与研究
英文刊名：Seismological and Geomagnetic Observation and Research
作者：王立新 ; 姜慧 ; 赵贤任 ; 吴彬
英文作者：Wang Lixin ; Jiang Hui ; Zhao Xianren ; Wu Bin ; Earthquake Administration of Guangdong Province ; Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology ; China Earthquake Admistration ; Guangdong Province Key Laboration of Earthquake Early Warning and Safety Diagnsis of Major Projects(Preparatory)
中文关键词：虎门大桥 ; 强震动记录 ; 场地效应 ; 多点输入 ; 河源4.8级地震
英文关键词：Humen bridge ; strong motion record ; site effect ; multi-supported input ; Heyuan M 4.8 earthquake
出版日期：2013-12-25
机构：广东省地震局,中国地震局地震监测与减灾重大实验室,广东省地震预警与重大工程安全诊断重点实验室筹;
年：2013
期：Z3
出版单位：地震地磁观测与研究

摘要

为实时监测桥梁结构振动状况和记录大型桥梁真实地震反应,在虎门大桥悬索桥东西主塔、箱梁上架设了总计36通道的强震动监测系统。简要介绍了该监测系统的测点布置、系统构成和技术特点,并重点对系统在2013年2月22日河源4.8级地震中的强震动记录进行了分析,讨论了由于局部场地条件差异引起的多点地震动输入问题。
Humen bridge is located at the estuary of the Zhujiang(Pearl) river carrying the Guangzhou-Shenzhen-Zhuhai Superhighway which links up Guangzhou City to the Shenzhen and Zhuhai Special Economic Zones,Hong Kong and Macau.Its main channel is a long span steel suspension bridge with a main span of 888 m.To monitor its real-time vibration and capture possible earthquake responses,a vibration monitoring system comprising 36-channel accelerometers has been set up at its main span.The location of sensors,equipments and technical features of the monitoring system are briefly introduced first in this paper.Then the strong motion records in Heyuan M 4.8 earthquake on Feb.22,2013 are analyzed.The multi-supported input phenomenon caused by local site effect was identified and discussed.

引文

戴竞.虎门大桥设计与施工[J].土木工程学报,1997,30(4):3-13.
    何玉珊,张劲泉,宿健,等.虎门悬索桥动力荷载试验[J].公路交通科技,1999,16(2):30-34.
    黄方林,王学敏,陈政清,等.大型桥梁健康监测研究进展[J].中国铁道科学,2005,26(2):1-7.
    李永振.吉林伊通M 4.3地震强震记录分析[J].地震地磁观测与研究,2011,32(6):42-46.
    牛和恩.虎门大桥工程[M].北京:人民交通出版社,1998.
    潘旦光,楼梦麟,范立础,等.多点输入下大跨度结构地震反应分析研究现状[J].同济大学学报,2001,29(1 0):1 213-1 219.
    张启伟.大型桥梁健康监测概念与监测系统设计[J].同济大学学报,2001,29(1):65-69.Salawu O S,Williams C.Review of full-scale dynamic testing of bridge structures[J].Engineering Structures,1995,17(2):113-121.