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Seismic damage of highway bridges during the 2008 Wenchuan earthquake

ISSN号：1671-3664
期刊名称：《地震工程与工程振动：英文版》
时间：0
分类：U448.14[建筑科学—桥梁与隧道工程;交通运输工程—道路与铁道工程]
作者机构：[1]Lab. of Urban Security ＆ Dixaster Engineering of MOE, Beijing University of Technology, Beijing 100124, China, [2]Key, Department of Civil Engineering, Tsinghua University, Belling 100084, China, [3]College of Civil Engineering, Tianjin University, Tianjin 200072, China, [4]College of Civil Engineering, Qingdao Technological University, Qingdao 266033, China
相关基金：Supported by： National Natural Science Foundation of China Under Grant No. 90715032 and 50808105; National Basic Research Program of China Under Grant No. 2007CB714203 Acknowledgement The authors are participants of the field Professors Sun Baitao, grateful to the organizers and survey team of CEA, including Lu Ming, Li Shanyou and Lin Junqi, associate professors Liu Aiwen, Meng Qingli and Li Wei, and Professor Chen Shaofeng in Harbin Institute of Technology. This field survey and research work was supported by the National Natural Science Foundation of China under Grant No.90715032, No.50808105 and the National Basic Research Program of China under Grant No.2007CB714203. The support is gratefully acknowledged.

作者： Han Qiang[1,2], Du Xiuli[1], Liu Jingbo[2], Li Zhongxian[3], Li Liyun[1], Zhao Jianfeng[4]

关键词：地震损坏, 公路桥梁, 汶川县, 地震, 抗震设计, Wenchuan earthquake, seismic damage, seismic design, highway bridge, field investigation

中文摘要：

许多高速公路桥严重地在 2008 Wenchuan 地震期间被损坏或完全崩溃了。领域调查在强烈影响的区域被执行，超过 320 座桥被检验。一些代表性的高速公路桥的损坏简短被描述，损坏的可能的原因的初步的分析在这篇论文被介绍。最普通的损坏包括了墩列的砍曲折的失败，扩大关节失败，砍关键失败，并且 girder 由于在 girder 和轴承之间的弱连接在横过或纵的方向滑动。从这地震接受的教训被描述并且与弄弯并且扭曲的桥的设计有关的建议，轴承和设备的设计被介绍阻止桥墩的 girder 倒塌，和韧性。为未来的建议为桥在的地震设计和翻新的技术对严重地震区域中等也被建议。

英文摘要：

Many highway bridges were severely damaged or completely collapsed during the 2008 Wenchuan earthquake. A field investigation was carried out in the strongly affected areas and over 320 bridges were examined. Damage to some representative highway bridges is briefly described and a preliminary analysis of the probable causes of the damage is presented in this paper. The most common damage included shear-flexural failure of the pier columns, expansion joint failure, shear key failure, and girder sliding in the transversal or longitudinal directions due to weak connections between girder and bearings. Lessons learned from this earthquake are described and recommendations related to the design of curved and skewed bridges, design of bearings and devices to prevent girder collapse, and ductility of bridge piers are presented. Suggestions for future seismic design and retrofitting techniques for bridges in moderate to severe earthquake areas are also proposed.

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