Embankment Seismic Fragility Assessment under the Near-Fault Pulse-like Ground Motions by Applying the Response Surface Method

Uncertainties of the ground motions and structural parameters are the main factors that limit the accuracy of embankment seismic fragility assessment. In response to the uncertainties of the ground motions, artificial synthesizing method of the near-fault pulse-like ground motions was proposed, and...

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Main Authors: Fa Che, Chao Yin, Jilei Zhou, Zhinan Hu, Xingkui Zhao, Lu Sheng, Qian Zhang, Xiaoyu Cheng, Gangting Tang, Han Zhang, Dong Liu
Format: Article
Language:English
Published: Hindawi Limited 2021-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2021/8849043
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spelling doaj-b2395c235aa94c5e9504c05f20e7d4412021-04-05T00:01:11ZengHindawi LimitedShock and Vibration1875-92032021-01-01202110.1155/2021/8849043Embankment Seismic Fragility Assessment under the Near-Fault Pulse-like Ground Motions by Applying the Response Surface MethodFa Che0Chao Yin1Jilei Zhou2Zhinan Hu3Xingkui Zhao4Lu Sheng5Qian Zhang6Xiaoyu Cheng7Gangting Tang8Han Zhang9Dong Liu10School of Civil and Architecture EngineeringSchool of Civil and Architecture EngineeringSchool of Transportation and Vehicle EngineeringState Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering StructuresShandong Dongtai Engineering Consulting Co., Ltd.Shandong Dongtai Engineering Consulting Co., Ltd.Shandong Dongtai Engineering Consulting Co., Ltd.Zibo International Academy at High-Tech ZoneSchool of Civil and Architecture EngineeringSchool of Civil and Architecture EngineeringLaoling Branch of Dezhou Highway Development CenterUncertainties of the ground motions and structural parameters are the main factors that limit the accuracy of embankment seismic fragility assessment. In response to the uncertainties of the ground motions, artificial synthesizing method of the near-fault pulse-like ground motions was proposed, and 15 ground motions with the rupture fault distances ranging from 1 to 15 km were synthesized by taking the Chi-Chi earthquake in Taiwan, China, as an example. The Xi’an-Baoji expressway K1125 + 470 embankment was taken as the research object, and a total of 12 structural parameters were selected as the design variables, namely, the elastic modulus, bulk modulus, shear modulus, density, cohesion force, and internal friction angle of the embankment fill and soil foundation, respectively. In response to the uncertainties of these parameters, 3 principal components with large impacts on the embankment seismic fragility were extracted based on the principal component analysis. Mapping relationships among the principal components and embankment seismic damages were analyzed using the uniform design response surface method, and the seismic fragility assessment was carried out and the fragility curves were plotted. The research results are consistent with the actual embankment seismic damage conditions of the Chi-Chi earthquake, indicating that the proposed method is scientific and reasonable. It also shows that it would obviously overestimate the seismic performance in the embankment seismic fragility assessment without considering the uncertainties of the ground motions and structural parameters.http://dx.doi.org/10.1155/2021/8849043
collection DOAJ
language English
format Article
sources DOAJ
author Fa Che
Chao Yin
Jilei Zhou
Zhinan Hu
Xingkui Zhao
Lu Sheng
Qian Zhang
Xiaoyu Cheng
Gangting Tang
Han Zhang
Dong Liu
spellingShingle Fa Che
Chao Yin
Jilei Zhou
Zhinan Hu
Xingkui Zhao
Lu Sheng
Qian Zhang
Xiaoyu Cheng
Gangting Tang
Han Zhang
Dong Liu
Embankment Seismic Fragility Assessment under the Near-Fault Pulse-like Ground Motions by Applying the Response Surface Method
Shock and Vibration
author_facet Fa Che
Chao Yin
Jilei Zhou
Zhinan Hu
Xingkui Zhao
Lu Sheng
Qian Zhang
Xiaoyu Cheng
Gangting Tang
Han Zhang
Dong Liu
author_sort Fa Che
title Embankment Seismic Fragility Assessment under the Near-Fault Pulse-like Ground Motions by Applying the Response Surface Method
title_short Embankment Seismic Fragility Assessment under the Near-Fault Pulse-like Ground Motions by Applying the Response Surface Method
title_full Embankment Seismic Fragility Assessment under the Near-Fault Pulse-like Ground Motions by Applying the Response Surface Method
title_fullStr Embankment Seismic Fragility Assessment under the Near-Fault Pulse-like Ground Motions by Applying the Response Surface Method
title_full_unstemmed Embankment Seismic Fragility Assessment under the Near-Fault Pulse-like Ground Motions by Applying the Response Surface Method
title_sort embankment seismic fragility assessment under the near-fault pulse-like ground motions by applying the response surface method
publisher Hindawi Limited
series Shock and Vibration
issn 1875-9203
publishDate 2021-01-01
description Uncertainties of the ground motions and structural parameters are the main factors that limit the accuracy of embankment seismic fragility assessment. In response to the uncertainties of the ground motions, artificial synthesizing method of the near-fault pulse-like ground motions was proposed, and 15 ground motions with the rupture fault distances ranging from 1 to 15 km were synthesized by taking the Chi-Chi earthquake in Taiwan, China, as an example. The Xi’an-Baoji expressway K1125 + 470 embankment was taken as the research object, and a total of 12 structural parameters were selected as the design variables, namely, the elastic modulus, bulk modulus, shear modulus, density, cohesion force, and internal friction angle of the embankment fill and soil foundation, respectively. In response to the uncertainties of these parameters, 3 principal components with large impacts on the embankment seismic fragility were extracted based on the principal component analysis. Mapping relationships among the principal components and embankment seismic damages were analyzed using the uniform design response surface method, and the seismic fragility assessment was carried out and the fragility curves were plotted. The research results are consistent with the actual embankment seismic damage conditions of the Chi-Chi earthquake, indicating that the proposed method is scientific and reasonable. It also shows that it would obviously overestimate the seismic performance in the embankment seismic fragility assessment without considering the uncertainties of the ground motions and structural parameters.
url http://dx.doi.org/10.1155/2021/8849043
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