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Earthquakes and Structures
  Volume 9, Number 1, July 2015, pages 93-109
DOI: http://dx.doi.org/10.12989/eas.2015.9.1.093
 

Structural damage distribution induced by Wenchuan Earthquake on 12th May, 2008
Junfeng Jia, Nianhua Song, Zigang Xu, Zizhao He and Yulei Bai

 
Abstract     [Full Text]
    Based on the reconnaissance of buildings in Dujiangyan City during 2008 Wenchuan earthquake, China, structural damage characteristics and the spatial distribution of structural damage are investigated, and the possible reasons for the extraordinary features are discussed with consideration of the influence of urban historical evolution and spatial variation of earthquake motions. Firstly, the urban plan and typical characteristics of structural seismic damage are briefly presented and summarized. Spatial distribution of structural damage is then comparatively analyzed by classifying all surveyed buildings in accordance with different construction age, considering the influence of seismic design code on urban buildings. Finally, the influences of evolution of seismic design code, topographic condition, local site and distance from fault rupture on spatial distribution of structural damage are comprehensively discussed. It is concluded that spatial variation of earthquake motions, resulting from topography, local site effect and fault rupture, are very important factor leading to the extraordinary spatial distribution of building damage except the evolution of seismic design codes. It is necessary that the spatial distribution of earthquake motions should be considered in seismic design of structures located in complicated topography area and near active faults.
 
Key Words
    Wenchuan earthquake; spatial distribution; building damage; near-fault earthquake; topography
 
Address
Junfeng Jia, Nianhua Song, Zigang Xu: Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,
Beijing University of Technology, Beijing 100124, China

Junfeng Jia, Nianhua Song, Zigang Xu: Beijing Collaborative Innovation Center for Metropolitan Transportation, Beijing 100124, China

Zizhao He: Department of Civil and Environmental Engineering, University of California, Los Angeles, USA

Yulei Bai: Department of Civil and Environmental Engineering, Hong Kong, Polytechnic University, China
 

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