Bridge Performance During the 2010 M8.8 Chile Earthquake
Field observations and plausible reasons of damaged bridges are presented and their implications to bridge design are discussed. In general, bridge substructures behaved satisfactorily except that a few columns suffered shear failure. Reinforced concrete shear keys served their design purposes, performing well when they functioned as part of the lateral restraint system at the bottom flange of girders. Vertical seismic bars were widely used to restrain the vertical motion of decks and they also performed well. Lateral steel stoppers were also used to provide vertical and lateral restraints on girders but were largely unsuccessful due to their weak connection to capbeams. Many spans of precast, prestressed, discontinuous girder bridges with continuous decks fell from their supports due likely to significant rotation of their superstructure. Other types of bridge damage were related to ground shaking, ground settlement and liquefaction‐induced lateral spreading.
G. Chen et al., "Bridge Performance During the 2010 M8.8 Chile Earthquake," Proceedings of the 2011 Structures Congress, American Society of Civil Engineers (ASCE), Jan 2011.
The definitive version is available at http://dx.doi.org/10.1061/41171(401)144
Civil, Architectural and Environmental Engineering
Earthquake Engineering Research Institute
United States. Federal Highway Administration
Keywords and Phrases
Bridges; Chile; Earthquakes; Forensic engineering
Article - Conference proceedings
© 2011 American Society of Civil Engineers (ASCE), All rights reserved.