ASCE will be sunsetting the Civil Engineering Database (CEDB) in the coming months. We encourage you to start using the ASCE Library to perform content searches. In the ASCE Library, you can save your search results as well as receive email content alerts when new content relevant to your area of interest is published. Try it out today at https://ascelibrary.org.

 

San Francisco Double-Deck Viaduct Retrofits

by Ray Zelinski, Caltrans, Sacramento, United States,



Document Type: Proceeding Paper

Part of: Lifeline Earthquake Engineering

Abstract:

Following the Loma Prieta Earthquake in October 1989, six double-deck reinforced concrete viaducts in San Francisco were closed because of some isolated damage, and as a precaution for the safety of the travelling public. The damage was not significant nor prevalent, but the collapse of the Cypress Viaduct in Oakland served notice that double-deck retrofits should not be delayed. Six consultant consortiums were hired by CALTRANS to produce retrofit plans in a fast-track mode to avoid lengthy viaduct closures. Since that time, original plans were aborted, and new concepts have been chosen. This paper identifies the viaduct seismic problems, dynamic analysis of the structures, and a comparison of the retrofit methods considered for this very extensive and expensive effort.

Subject Headings: Viaducts | Reinforced concrete | Rehabilitation | Earthquakes | Dynamic structural analysis | Seismic design | Load and resistance factor design | California | United States

Services: Buy this book/Buy this article

 

Return to search