Problems associated with direct displacement-based design of concrete bridges with single-column piers, and some suggested improvements

Kappos, A. J., Gidaris, I.G. & Gkatzogias, K.I. (2012). Problems associated with direct displacement-based design of concrete bridges with single-column piers, and some suggested improvements. Bulletin of Earthquake Engineering, 10(4), pp. 1237-1266. doi: 10.1007/s10518-012-9354-y

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Abstract

Currently available displacement-based design (DBD) procedures for bridges are critically evaluated with a view to identifying extensions and/or modifications of the procedure, for it to be applicable to final design of a fairly broad class of bridges. An improved direct DBD procedure is presented, including a suite of comprehensive design criteria and proper consideration of the degree of fixity of the pier top. The design of an overpass bridge (originally designed to a current European Code), applying the improved ‘direct’ displacement-based design (DDBD) procedure is presented and both ‘conventional’ and displacement-based designs are assessed using non-linear response-history analysis (NLRHA); comparisons are made in terms of both economy and seismic performance of the different designs. It is seen that DDBD provided a more rational base shear distribution among piers and abutments when compared to the force-based design procedure and adequately captured the displacement pattern, closely matching the results of the more rigorous NLRHA.

Item Type: Article
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/s10518-012-9354-y
Uncontrolled Keywords: displacement-based design; bridges; reinforced concrete; Eurocode 8
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: School of Engineering & Mathematical Sciences > Engineering
URI: http://openaccess.city.ac.uk/id/eprint/5294

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