EARTHQUAKE RETROFIT OF CALIFORNIA BRIDGE: ROUTE 242/680 SEPARATION
The California Department of Transportation is currently implementing a statewide earthquake retrofit program. The goals of the program are to improve structural ductility and to provide corrective measures to the factors that contributed to the major damage and collapse of bridges during the San Fernando and Loma Prieta earthquakes. A case study of a retrofit design project of a bridge located in the San Francisco Bay area, in proximity of the Concord fault, is described. The structure type, geometry, traffic volumes, and maximum credible earthquake led to many difficulties in the analysis and resulted in solutions that were complex and unique for a bridge structure. The bridge investigated consists of two very different structure types joined by a voided pier that serves as a central abutment for both. The focus is primarily on the south structure, where base isolation was used, in contrast to the more conventional retrofit techniques used for the north structure.
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Supplemental Notes:
- Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Fish, R C
- Rowe, G L
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Conference:
- Fourth International Bridge Engineering Conference
- Location: San Francisco, California
- Date: 1995-8-28 to 1995-8-30
- Publication Date: 1995
Language
- English
Media Info
- Features: Figures; References;
- Pagination: p. 101-107
- Monograph Title: FOURTH INTERNATIONAL BRIDGE ENGINEERING CONFERENCE, SAN FRANCISCO, CALIFORNIA, AUGUST 28-30, 1995. CONFERENCE PROCEEDINGS, 2 VOLUMES
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Serial:
- Transportation Research Board Conference Proceedings
- Issue Number: 7
- Publisher: Transportation Research Board
- ISSN: 1073-1652
Subject/Index Terms
- TRT Terms: Box girder bridges; Bridges; Case studies; Conferences; Earthquake resistant design; Retrofitting
- Geographic Terms: California
- Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 00711715
- Record Type: Publication
- ISBN: 0309061091
- Files: TRIS, TRB
- Created Date: Sep 6 1995 12:00AM