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 language | English |
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| Title of host publication | Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges - Proceedings of the 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018 |
| Editors | Nigel Powers, Dan M. Frangopol, Riadh Al-Mahaidi, Colin Caprani |
| Publisher | CRC Press/Balkema |
| Pages | 1029-1035 |
| Number of pages | 7 |
| ISBN (Print) | 9781138730458 |
| Publication status | Published - 2018 |
| Event | 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018 - Melbourne, Australia Duration: 2018 Jul 9 → 2018 Jul 13 |
Publication series
| Name | Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges - Proceedings of the 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018 |
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Conference
| Conference | 9th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2018 |
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| Country/Territory | Australia |
| City | Melbourne |
| Period | 18/7/9 → 18/7/13 |