Title:
Aspects of Seismic Evaluation and Retrofit of Canadian Bridges
Author(s):
D. Mitchell
Publication:
Symposium Paper
Volume:
197
Issue:
Appears on pages(s):
169-190
Keywords:
bridges; codes; ductility; earthquake-resistant
structures; evaluation; reinforced concrete; retrofit
DOI:
10.14359/11933
Date:
4/1/2002
Abstract:
The approach for seismic evaluation and guidelines for seismic retrofit in the Canadian Highway Bridge Design code are presented. A number of common seismic deficiencies found in bridge structures are discussed. The reversed cyclic loading behavior of columns with lap splices at their bases, outrigger beam-column connections and columns with hinges at their bases are discussed. Methods suitable for retrofit of a number these deficiencies are described. The responses of these elements after these retrofit strategies had been carried out are also presented.