Shear Retrofit of Flared RC Bridge Columns Subjected to Earthquakes
Publication: Journal of Bridge Engineering
Volume 6, Issue 3
Abstract
This paper presents an evaluation of the seismic performance and retrofit of reinforced-concrete bridge columns with structural flares. Experimental and analytical studies were performed on four 40%-scale specimens. Two specimens represented the as-built columns, while the other two were retrofitted with steel jackets for shear capacity enhancement. The results indicate that some of the existing methods for evaluating the shear capacity of columns can be unconservative and could overestimate the shear capacity of the columns included in this study by 60%. It is also shown that by implementing proper detailing, steel jackets can be used to enhance the shear capacity and ductility of flared columns with no appreciable increase in the shear demand.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 6 • Issue 3 • June 2001
Pages: 189 - 197
History
Received: May 27, 1999
Published online: Jun 1, 2001
Published in print: Jun 2001
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