Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)
- 2002.10a
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- Pages.129-134
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- 2002
Seismic performance evaluation using capacity spectrum method of bridge retrofitted with isolators
능력스펙트럼을 이용한 지진격리교량의 내진성능평가
Abstract
The seismic performance evaluation and retrofit process are very important for old bridge. If the result is not appropriate, a retrofit process requires. Among the various retrofit methods, this paper selects a seismic isolator and evaluates a seismic performance of bridge. In case of applied seismic isolators to bridge, it proved that seismic capacity is increased by isolators A period of bridge is increased, and a seismic response is decreased. A method of evaluation is capacity spectrum method. By means of a graphical procedure, capacity spectrum estimates a performance level of structure by comparing the capacity of structure with the demand of earthquake ground motion on the structure. The objective of this study is to compare a seismic performance of a non-seismic designed bridge and seismic isolated bridge and to verify a effect of seismic isolator
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