Seismic Evaluation of the Tied-arch Bridge Across the Mississippi River on I-40

by W. David Liu, Imbsen & Associates, Inc, Sacramento, United States,
Roy A. Imbsen, Imbsen & Associates, Inc, Sacramento, United States,
Richard J. LeBeau, Imbsen & Associates, Inc, Sacramento, United States,
Farid S. Nobari, Imbsen & Associates, Inc, Sacramento, United States,
Lelio H. Mejia, Imbsen & Associates, Inc, Sacramento, United States,



Document Type: Proceeding Paper

Part of: Structures Congress XII

Abstract:

The bridge reported in this paper is a two-span steel tied-arch bridge supported on massive caisson foundations. Site specific seismic studies were carried out to establish the ground motion input at two levels. Spatially-varying ground motion time histories were generated. Seismic soil-structure effects were taken into account. Dynamic behavior characteristics of the tied-arch structure are identified and multiple-support-excitation seismic response analyses were carried out to identify structural vulnerabilities.



Subject Headings: Ground motion | Structural behavior | Bridge foundations | Highways and roads | Arch bridges | Steel bridges | Steel structures | Span bridges | Mississippi River

Services: Buy this book/Buy this article

 

Return to search