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Damage investigation of girder bridges under the Wenchuan earthquake and corresponding seismic design recommendations

Date: 2018-06-01      View counts: 176    

Label:

Language
English
Author
Li Jianzhong, Peng Tianbo, Xu Yan
Journal
Earthquake Engineering and Engineering Vibration
Class
Investigation on earthquake disaster
Year
2008
Paper Keyword
Wenchuan earthquake; bridge damage investigation; seismic design recommendation
Abstract
An investigation of girder bridges on National Highway 213 and the Doujiangyan-Wenchuan expressway after the Wenchuan earthquake showed that typical types of damage included: span collapses due to unseating at expansion joints; shear key failure; and damage of the expansion joint due to the slide-induced large relative displacement between the bottom of the girder and the top of the laminated-rubber bearing. This slide, however, can actually act as a form of isolation for the substructure, and as a result, the piers and foundation of most of the bridges on state route 213 suffered minor damage. The exception was the Baihua Bridge, which suffered severe damage. Corresponding seismic design recommendations are presented based on this investigation.

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