Seismic performance of isolated bridges considering long-term deterioration of isolators

Hiroshi Matsuzaki, Yohei Kubo, Maki Oikawa, Shigeki Unjoh

Research output: Contribution to conferencePaper

Abstract

Mechanical properties of natural rubber seismic isolators are varied due to aging deterioration. It is needed that seismic performance of isolated bridges are maintained considering aging deterioration of isolators over their lifetime. In this study, seismic failure modes and seismic safety of isolated bridges were evaluated considering uncertainties in the material and mechanical properties and aging deterioration of isolators. It was shown that seismic safety of the isolated bridges is mainly controlled by the rupture strain of the isolator if the ultimate capacity ratio between the isolator and the column is low and that adequate capacity ratio is needed to enhance seismic safety and reparability of isolated bridges.

Original languageEnglish
Publication statusPublished - 2019 Jan 1
Event13th International Conference on Applications of Statistics and Probability in Civil Engineering, ICASP 2019 - Seoul, Korea, Republic of
Duration: 2019 May 262019 May 30

Conference

Conference13th International Conference on Applications of Statistics and Probability in Civil Engineering, ICASP 2019
CountryKorea, Republic of
CitySeoul
Period19/5/2619/5/30

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Statistics and Probability

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  • Cite this

    Matsuzaki, H., Kubo, Y., Oikawa, M., & Unjoh, S. (2019). Seismic performance of isolated bridges considering long-term deterioration of isolators. Paper presented at 13th International Conference on Applications of Statistics and Probability in Civil Engineering, ICASP 2019, Seoul, Korea, Republic of.