Seismic failure mode evaluation of bridges with deteriorated isolators

H. Matsuzaki, Y. Kubo, T. Tsumura, S. Unjoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Isolated bridges are designed so that seismic energy is mainly dissipated at isolators. It is important that seismic safety and reparability of isolated bridges with deteriorated isolators are maintained as well as those with sound isolators. In this study, seismic failure modes of isolated bridges were evaluated considering uncertainties in the material and mechanical properties and aging deterioration of isolators. It was shown that response of isolated bridges is affected by deterioration of the lead core of the isolator and that failure probability of the isolator is mainly controlled by the rupture strain associated with deterioration of the rubber of the isolator.

This study was supported by JSPS KAKENHI Grant Number JP26420452. It is appreciated that strong ground motions were provided by K-NET and KiKnet of NIED, JMA, JAEE and NGA database of PEER.

Original languageEnglish
Title of host publicationMaintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges - Proceedings of the 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018
EditorsNigel Powers, Dan M. Frangopol, Riadh Al-Mahaidi, Colin Caprani
PublisherCRC Press/Balkema
Pages1029-1035
Number of pages7
ISBN (Print)9781138730458
Publication statusPublished - 2018 Jan 1
Event9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018 - Melbourne, Australia
Duration: 2018 Jul 92018 Jul 13

Publication series

NameMaintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges - Proceedings of the 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018

Conference

Conference9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018
CountryAustralia
CityMelbourne
Period18/7/918/7/13

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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