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Time-dependent seismic fragility analysis of pile-supported wharf considering chloride ion induced corrosion
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Lei SU1, Long-long WANG1, Jian-feng WANG1, Xian-zhang LING1, 2
Journal of Vibration Engineering | 2024, 37(7) : 1259 - 1268
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Journal of Vibration Engineering | 2024, 37(7): 1259-1268
Time-dependent seismic fragility analysis of pile-supported wharf considering chloride ion induced corrosion
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Lei SU1, Long-long WANG1, Jian-feng WANG1, Xian-zhang LING1, 2
Affiliations
  • 1School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China
  • 2School of Civil Engineering, Harbin Institute of Technology, Harbin 150001, China
Published: 2024-07-28 doi: 10.16385/j.cnki.issn.1004-4523.2024.07.018
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Seismic vulnerability analysis is one of the most effective tools to evaluate seismic performance of pile-supported wharf （PSW） structures，which can quantify the probability of structural damage under given ground motion parameters. For a typical PSW in this study，the degradation of steel and concrete materials caused by chloride ion induced erosion is explored. Based on the open-source numerical computational platform OpenSees，a two-dimensional finite element model of PSW is created. In this model，the cross-section characteristics of pile considering corrosion effect are adopted in splash zone. The influence of chloride ion induced corrosion on seismic performance of PSW structure is discussed. Pushover analysis method is used to determine the seismic demand bound limit of each damage state of PSW. By inputting 80 ground motions to wharf models with different corrosion years，the logarithm regression analysis for the ratios of the capacity and demand are adopted to develop the time-dependent seismic fragility curves. The results show that： Chloride ion induced corrosion leads to the decrease of deck displacement and pile top bending moment，and the slight increase of pile top curvature； During the whole service life of PSW，seismic vulnerability of wharf structure in different damage states increases with an increase of service time.

earthquake  /  fragility curve  /  pile-supported wharf  /  chloride ion induced corrosion  /  Pushover analysis
Lei SU, Long-long WANG, Jian-feng WANG, Xian-zhang LING. Time-dependent seismic fragility analysis of pile-supported wharf considering chloride ion induced corrosion[J]. Journal of Vibration Engineering, 2024 , 37 (7) : 1259 -1268 . DOI: 10.16385/j.cnki.issn.1004-4523.2024.07.018
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Year 2024 volume 37 Issue 7
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2024.07.018
  • Receive Date：2022-07-13
  • Online Date：2026-02-12
  • Published：2024-07-28
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  • Received：2022-07-13
  • Revised：2022-08-26
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    1School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China
    2School of Civil Engineering, Harbin Institute of Technology, Harbin 150001, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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