文章基本信息

标题：Sensitivity Analysis of Pile Supported Wharves against Directional Uncertainty of Earthquakes Using Fragility Curves
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作者：Mohsen Soltani ; Rouhollah Amirabadi
期刊名称：International Journal of Maritime Technology
印刷版ISSN：2345-6000
电子版ISSN：2476-5333
出版年度：2019
卷号：11
期号：WINTER AND SPRING 2019
页码：33-40
语种：English
出版社：Iranian Association of Naval Architecture and Marine Engineering
摘要：This paper aims to tackle an important uncertainty which extremely affects seismic performance of wharf structures in earthquake events. According to previous studies performed for structures on land, it is shown that structures on land are highly susceptible to unknown orientation of earthquakes called as the directional uncertainty. However, for marine structures, especially pile supported wharves, research efforts are rare to assess the effect of directional uncertainty of earthquakes. Therefore, to show this effect on pile supported wharves, fragility analysis is performed based on methodology suggested by Pacific Earthquake Engineering Research Center (PEER) for the modeled pile supported wharf located in Maah-shahr port as a case study. As the first phase of this methodology, nonlinear static pushover analyses are performed for randomly chosen incident angles in order to quantitatively measure damage states suggested by marine design code. After damage states are obtained, IDA analysis are conducted in the selected incident angles to obtain nonlinear structural responses which are supposed to be used for fragility analysis as inputs. Finally, once fragility curves have been developed according to the last phase of PEER methodology, the more vulnerable directions of wharf are represented.