Seismic isolation retrofitting solution for an existing steel cable-stayed bridge.

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ID: 47198
2018
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Abstract
This paper investigated the seismic retrofitting of an existing cable-stayed bridge through the use of a seismic isolation system. The bridge is situated in a high seismic zone. During the Saguenay earthquake 1988, one of the anchorage plates of the bridge supports failed. Herein, several configurations of seismic isolation system were considered to identify an appropriate solution for the seismic retrofitting of the bridge in both the longitudinal and transverse directions. A three-dimensional model of the bridge was created, and its seismic behavior studied through nonlinear dynamic time-history analysis. The comparative performance study among the five retrofitting configurations showed that the partial seismic isolation of the bridge led to an enhancement of the seismic response of the bridge in one direction only. However, the overall seismic response of the cable-stayed bridge substantially improved in the longitudinal and transverse directions in cases where the isolation systems were utilized between the supports and the deck-tower connection of the bridge.
Reference Key
javanmardi2018seismicplos Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Javanmardi, Ahad;Ibrahim, Zainah;Ghaedi, Khaled;Khan, Niaz Bahadur;Benisi Ghadim, Hamed;
Journal PloS one
Year 2018
DOI
10.1371/journal.pone.0200482
URL
Keywords
Epidemiology public health general diabetes

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