Original scientific paper

Seismic performance of self-centering bridge pier using seat angles

Rouzbeh Davoudi ; School of Civil Engineering, University of Tehran, Tehran, IRAN
Mehdi Ghassemieh ; School of Civil Engineering, University of Tehran, Tehran, IRAN
Mohammad Khanmohammadi ; School of Civil Engineering, University of Tehran, Tehran, IRAN

Abstract

Recent earthquakes have demonstrated a need for a new design philosophy of retrofitting bridge piers aiming to avoid damage, ensure post-earthquake serviceability and reduce financial losses. Self-centering and rocking systems are mechanisms that help eliminate residual drift, maintain post-earthquake serviceability and reduce the possibility of bridge piers being demolished after earthquakes. The aim of this study is to evaluate the seismic performance of a self-centering bridge pier with seat angles as an energy absorption device in comparison with the traditional devices. In this regard, a series of nonlinear static and dynamic analyses on a typical, normal bridge pier and the proposed pier have been performed, and significant design criteria have been investigated. Energy absorption, ductility demand, residual and maximum drift have been investigated for both conventional and proposed pier. The results shed light on effect of rocking mechanism on the seismic enhancement of bridge piers.

Keywords

self-centering; bridge pier; seat angle; seismic performance; design philosophy; absorption device

Hrčak ID:

185742

URI

https://hrcak.srce.hr/185742

Publication date:

18.6.2014.

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