Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)
- 2006.11a
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- Pages.109-112
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- 2006
Evaluation Test for the Bridges Retrofitted Seismically with LRB
LRB로 내진보강된 교량의 성능검증 실험
- Published : 2006.11.04
Abstract
In this study, an approach that installs seismic isolation bearings was proposed for the seismic retrofit of the existing bridges. The method that replaces all existing bearings with seismic isolators was proposed already. However, in this study, we recommend to utilize the existing bearings for the benefit of safety and cost. According to our proposal, the seismic isolators do not support vertical loads but they just function as the period shifter and the horizontal damper. To verify this approach experimentally, the real scale bearings and isolators for the real highway bridges were designed and fabricated. And the responses of this isolated bridges to the assumed earthquakes were determined by the pseudo dynamic test scheme. The test results were also compared to the responses computed by the well known structural analysis software to check the reliability of the test. From the test results, we found that the retrofitted bridges using the proposed method showed stable performances under earthquakes.
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