Sensitivity Analysis of Pile Supported Wharves against Directional Uncertainty of Earthquakes Using Fragility Curves

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 ca...

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Main Authors: Mohsen Soltani, Rouhollah Amirabadi
Format: Article
Language:English
Published: Iranian Association of Naval Architecture and Marine Engineering 2019-03-01
Series:International Journal of Maritime Technology
Subjects:
Online Access:http://ijmt.ir/article-1-661-en.html
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author Mohsen Soltani
Rouhollah Amirabadi
author_facet Mohsen Soltani
Rouhollah Amirabadi
author_sort Mohsen Soltani
collection DOAJ
description 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.
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spelling doaj.art-ef6a4a00c7864b21ab1a53d1b5740b722022-12-21T22:26:58ZengIranian Association of Naval Architecture and Marine EngineeringInternational Journal of Maritime Technology2345-60002476-53332019-03-0111Winter and Spring 20193340Sensitivity Analysis of Pile Supported Wharves against Directional Uncertainty of Earthquakes Using Fragility CurvesMohsen Soltani0Rouhollah Amirabadi1 University of Qom University of Qom 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.http://ijmt.ir/article-1-661-en.htmlidafragility analysispile-supported wharfdirectional uncertainty
spellingShingle Mohsen Soltani
Rouhollah Amirabadi
Sensitivity Analysis of Pile Supported Wharves against Directional Uncertainty of Earthquakes Using Fragility Curves
International Journal of Maritime Technology
ida
fragility analysis
pile-supported wharf
directional uncertainty
title Sensitivity Analysis of Pile Supported Wharves against Directional Uncertainty of Earthquakes Using Fragility Curves
title_full Sensitivity Analysis of Pile Supported Wharves against Directional Uncertainty of Earthquakes Using Fragility Curves
title_fullStr Sensitivity Analysis of Pile Supported Wharves against Directional Uncertainty of Earthquakes Using Fragility Curves
title_full_unstemmed Sensitivity Analysis of Pile Supported Wharves against Directional Uncertainty of Earthquakes Using Fragility Curves
title_short Sensitivity Analysis of Pile Supported Wharves against Directional Uncertainty of Earthquakes Using Fragility Curves
title_sort sensitivity analysis of pile supported wharves against directional uncertainty of earthquakes using fragility curves
topic ida
fragility analysis
pile-supported wharf
directional uncertainty
url http://ijmt.ir/article-1-661-en.html
work_keys_str_mv AT mohsensoltani sensitivityanalysisofpilesupportedwharvesagainstdirectionaluncertaintyofearthquakesusingfragilitycurves
AT rouhollahamirabadi sensitivityanalysisofpilesupportedwharvesagainstdirectionaluncertaintyofearthquakesusingfragilitycurves