Seismic Analysis of the Brent-Spence Bridge

摘要

In Kentucky, there are two double-deck bridges. Brent-Spence bridge on Interstate75 connecting Covington (Kentucky) to Cincinnati (Ohio) and the Sherman-Minton Bridge on Interstate 64 connecting Louisville (Kentucky) to New Albany (Indiana). Both bridges cross the Ohio River, and are located in regions that are influenced by the seismically active New Madrid zone and other local zones. This report concentrates on the seismic evaluation of the main Brent-Spence Bridge and the Covington approach. The primary aim of this study was to assess the structural integrity of the Brent-Spence bridge when subjected to a seismic event from the New Madrid, Wabash Valley, or Anna seismic zone. To achieve this, the scope of work was divided into several tasks as follows: experimental analysis of the main bridge (or field testing), analytical modeling, site specific ground motion, and seismic response analysis.