Seismic analysis and design of R/C bridge including SSI effects

A. J. Kappos, G. D. Manolis, I. F. Moschonas

Research output: Contribution to journalConference articlepeer-review

Abstract

This work investigates the soil-structure-interaction (SSI) phenomenon manifested during the seismic response of a reinforced concrete (R/C) bridge. We focus on a four-span highway bridge with piers of unequal height crossing a mountain valley. The bridge and its foundation system are modelled by finite elements (FE) plus the spring/dashpot/added mass discrete parameter system. A hierarchy of FE meshes is developed, starting with shell elements and ending with linear elements. Also, two basic types of foundations are examined, namely spread footings versus pile groups. Following a preliminary design of the bridge, a series of time history analyses of the combined deck-pier-foundation system are performed, the results of which are used in assessing the role of the foundation's compliance. The influence of key construction details such as pier-to-deck connection on the response is also examined. Finally, a series of recommendations are given on how to account for the ground's influence on the design of the piers.

Original languageBritish English
Pages (from-to)691-700
Number of pages10
JournalAdvances in Earthquake Engineering
Volume9
StatePublished - 2001
EventThird International Conference on Earthquake Resistant Engineering Structures, ERES III - Malaga, Spain
Duration: 4 Sep 20016 Sep 2001

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