Analysis on the Time-Varying Fragility of Offshore Concrete Bridge
For offshore bridges, the most prominent problem in the whole life cycle is that it is in an earthquake prone zone and an offshore corrosion environment at the same time. A nonlinear dynamic analysis model is set up for an offshore multispan and continuous rigid frame bridge based on the OpenSEES pl...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Complexity |
| Online Access: | http://dx.doi.org/10.1155/2019/2739212 |
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| author | Yan Liang Jia-lei Yan Jun-lei Wang Peng Zhang Bao-jie He |
| author_facet | Yan Liang Jia-lei Yan Jun-lei Wang Peng Zhang Bao-jie He |
| author_sort | Yan Liang |
| collection | DOAJ |
| description | For offshore bridges, the most prominent problem in the whole life cycle is that it is in an earthquake prone zone and an offshore corrosion environment at the same time. A nonlinear dynamic analysis model is set up for an offshore multispan and continuous rigid frame bridge based on the OpenSEES platform. The fragility surface of the bridge pier, bearing, bridge platform, and system are established by selecting a reasonable damage constitutive model of the material durability and a damage index analysis that studies the damage of the bridge durability to time-varying seismic fragility of bridge components and the system of the whole life cycle in offshore environment. The results show that the durability damage will lead to a constant decline in seismic capacity of the pier and an increase of the seismic demand under earthquake action as well as the probability to reach the ultimate failure state; compared to high piers, a low pier is more vulnerable to the offshore corrosion environment; the seismic fragility of bridge platform is higher than that of simply bearing; and the influence of offshore corrosion on environment is relatively large. With the prolongation of service period, the effect of durability damage on the seismic fragility of bridge system cannot be ignored in the coastal environment and it is necessary to make a reasonable evaluation on the seismic fragility of bridge structure during the whole life period. |
| format | Article |
| id | doaj-art-fb7569527ed74f49b47d8848ed6e79a7 |
| institution | Kabale University |
| issn | 1076-2787 1099-0526 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Complexity |
| spelling | doaj-art-fb7569527ed74f49b47d8848ed6e79a72025-08-20T03:25:31ZengWileyComplexity1076-27871099-05262019-01-01201910.1155/2019/27392122739212Analysis on the Time-Varying Fragility of Offshore Concrete BridgeYan Liang0Jia-lei Yan1Jun-lei Wang2Peng Zhang3Bao-jie He4College of Civil Engineering, Zhengzhou University, Zhengzhou, ChinaCollege of Civil Engineering, Zhengzhou University, Zhengzhou, ChinaSchool of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, ChinaSchool of Water Conservancy and Environment, Zhengzhou University, Zhengzhou, ChinaFaculty of Built Environment, University of New South Wales, Sydney, NSW 2052, AustraliaFor offshore bridges, the most prominent problem in the whole life cycle is that it is in an earthquake prone zone and an offshore corrosion environment at the same time. A nonlinear dynamic analysis model is set up for an offshore multispan and continuous rigid frame bridge based on the OpenSEES platform. The fragility surface of the bridge pier, bearing, bridge platform, and system are established by selecting a reasonable damage constitutive model of the material durability and a damage index analysis that studies the damage of the bridge durability to time-varying seismic fragility of bridge components and the system of the whole life cycle in offshore environment. The results show that the durability damage will lead to a constant decline in seismic capacity of the pier and an increase of the seismic demand under earthquake action as well as the probability to reach the ultimate failure state; compared to high piers, a low pier is more vulnerable to the offshore corrosion environment; the seismic fragility of bridge platform is higher than that of simply bearing; and the influence of offshore corrosion on environment is relatively large. With the prolongation of service period, the effect of durability damage on the seismic fragility of bridge system cannot be ignored in the coastal environment and it is necessary to make a reasonable evaluation on the seismic fragility of bridge structure during the whole life period.http://dx.doi.org/10.1155/2019/2739212 |
| spellingShingle | Yan Liang Jia-lei Yan Jun-lei Wang Peng Zhang Bao-jie He Analysis on the Time-Varying Fragility of Offshore Concrete Bridge Complexity |
| title | Analysis on the Time-Varying Fragility of Offshore Concrete Bridge |
| title_full | Analysis on the Time-Varying Fragility of Offshore Concrete Bridge |
| title_fullStr | Analysis on the Time-Varying Fragility of Offshore Concrete Bridge |
| title_full_unstemmed | Analysis on the Time-Varying Fragility of Offshore Concrete Bridge |
| title_short | Analysis on the Time-Varying Fragility of Offshore Concrete Bridge |
| title_sort | analysis on the time varying fragility of offshore concrete bridge |
| url | http://dx.doi.org/10.1155/2019/2739212 |
| work_keys_str_mv | AT yanliang analysisonthetimevaryingfragilityofoffshoreconcretebridge AT jialeiyan analysisonthetimevaryingfragilityofoffshoreconcretebridge AT junleiwang analysisonthetimevaryingfragilityofoffshoreconcretebridge AT pengzhang analysisonthetimevaryingfragilityofoffshoreconcretebridge AT baojiehe analysisonthetimevaryingfragilityofoffshoreconcretebridge |