Cardinal Raúl Silva Henríquez Bridge During the 2010 Chile Earthquake: Failure Analysis and Retrofit Strategy
This paper presents a case study of the Cardinal Raúl Silva Henríquez Bridge, which experienced significant damage during an earthquake that occurred in Chile on February 27, 2010. Supported by reinforced concrete and steel columns of varying heights, the superstructure of the bridge consisted of 22 steel-girder spans, with one intermediate expansion joint located at the middle of the bridge. At each end of the bridge, the bottom flanges of the girders were welded to their bearing steel plates, which were embedded and anchored into the bridge abutment. Two, three-dimensional, finite element models (global versus local) with beam and solid elements, respectively, were established for bridge response and damage process simulations. Field observations indicated, and finite element simulations verified, that the damage was caused mainly by the excessive seismic load of 11 continuous steel-girder spans under longitudinal earthquake loading and its eccentricity from the girder-to-abutment connection, which resulted in a significant bending effect. Parametric studies demonstrated that an effective retrofit strategy could be developed through a reduction in the number of continuous spans, modification of the girder-to-abutment connection detail, an increase in the capacity of girders with enlarged bearing seats, added stiffeners for girders, and thicker flanges and webs.
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- Summary URL:
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Availability:
- Find a library where document is available. Order URL: http://www.trb.org/Main/Blurbs/169693.aspx
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Authors:
- Wang, Zuocai
- Chen, Genda
- Yen, Phillip W
- Buckle, Ian
- Publication Date: 2013
Language
- English
Media Info
- Media Type: Print
- Features: Figures; Photos; References; Tables;
- Pagination: pp 13–19
- Monograph Title: Structures 2013, Volume 2
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Serial:
- Transportation Research Record: Journal of the Transportation Research Board
- Issue Number: 2332
- Publisher: Transportation Research Board
- ISSN: 0361-1981
Subject/Index Terms
- TRT Terms: Case studies; Earthquake resistant design; Earthquakes; Failure analysis; Girder bridges; Retrofitting; Steel bridges
- Identifier Terms: Maule Earthquake (Chile), February 27, 2010
- Subject Areas: Bridges and other structures; Construction; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls; I53: Construction of Bridges and Retaining Walls;
Filing Info
- Accession Number: 01473558
- Record Type: Publication
- ISBN: 9780309286787
- Report/Paper Numbers: 13-3048
- Files: TRIS, TRB, ATRI
- Created Date: Feb 22 2013 3:40PM