期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：189
期号：5
页码：052043
DOI：10.1088/1755-1315/189/5/052043
语种：English
出版社：IOP Publishing
摘要：A case study on evaluation of seismic fortification intensity by cost-benefit analysis is presented in this paper. Three bridges designed with intensities VI, VII and VIII are modeled and their seismic responses are calculated by push-over approach, and the damage indices are estimated by a stiffness degradation model. The vulnerability matrices are built from a set of probability density functions and the damage results. In seismic risk cost assessments of the bridges, both direct and indirect losses are taken into account by ratios to the original construction costs. The fortification intensity is evaluated from the minimum sum of the original cost and seismic risk cost in bridge life -cycle. The result shows that the most effective intensities at three sites with different hazards are close to those with exceeding probability 10 % in 50 years, except that intensity VIII is little bit better at a site in intensity VII zone.
Loading...
