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

A. J. Kappos, I. G. Gidaris, K. I. Gkatzogias

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

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.

Original languageBritish English
Pages (from-to)1237-1266
Number of pages30
JournalBulletin of Earthquake Engineering
Volume10
Issue number4
DOIs
StatePublished - Aug 2012

Keywords

  • Bridges
  • Displacement-based design
  • Eurocode 8
  • Reinforced concrete

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