Fatigue Damage Evaluation of Pile-Supported Bridges under Stochastic Ice Loads
The Bohai Sea is the sea area with the worst ice condition in China, and the ice loads significantly threaten the safety of structures in the sea. The intense vibrations of the pile-supported bridge under stochastic ice loads will increase the fatigue damage of a bridge structure and reduce the fati...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/1853963 |
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| author | Tianyu Wu Wenliang Qiu Guangrun Wu |
| author_facet | Tianyu Wu Wenliang Qiu Guangrun Wu |
| author_sort | Tianyu Wu |
| collection | DOAJ |
| description | The Bohai Sea is the sea area with the worst ice condition in China, and the ice loads significantly threaten the safety of structures in the sea. The intense vibrations of the pile-supported bridge under stochastic ice loads will increase the fatigue damage of a bridge structure and reduce the fatigue life of a bridge structure. In the present study, a comprehensive analysis model is presented to study fatigue damage for pile-supported bridges under ice loads in Bohai Sea. On the basis of measured statistical data of ice parameters and stochastic ice loads spectrum of Bohai Sea, the time histories of the stochastic ice loads of Bohai Sea are simulated. Fatigue damage analysis is carried out in time domain utilizing the finite element method considering soil and bridge structure interaction. The effect of soil conditions and water depth on the cumulative fatigue damage of the pile-supported bridges is studied. Numerical results indicate that in comparison with stiff soil conditions, pile-supported bridges in soft oil conditions can increase the cumulative fatigue damage substantially; pile-supported bridges in deep water also can increase the cumulative fatigue damage obviously. The study presented the first danger position of cumulative damage of the pile cross section under stochastic ice loads. The findings of this study can be used to fatigue damage evaluation and bridge construction in the ice-covered sea area. |
| format | Article |
| id | doaj-art-73442bd29c11438d81c6571641e8f396 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-73442bd29c11438d81c6571641e8f3962025-02-03T06:06:38ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/18539631853963Fatigue Damage Evaluation of Pile-Supported Bridges under Stochastic Ice LoadsTianyu Wu0Wenliang Qiu1Guangrun Wu2School of Civil Engineering, Dalian University of Technology, No. 2 Linggong Road, Dalian City, Liaoning Province 116024, ChinaSchool of Civil Engineering, Dalian University of Technology, No. 2 Linggong Road, Dalian City, Liaoning Province 116024, ChinaSchool of Civil Engineering, Dalian University of Technology, No. 2 Linggong Road, Dalian City, Liaoning Province 116024, ChinaThe Bohai Sea is the sea area with the worst ice condition in China, and the ice loads significantly threaten the safety of structures in the sea. The intense vibrations of the pile-supported bridge under stochastic ice loads will increase the fatigue damage of a bridge structure and reduce the fatigue life of a bridge structure. In the present study, a comprehensive analysis model is presented to study fatigue damage for pile-supported bridges under ice loads in Bohai Sea. On the basis of measured statistical data of ice parameters and stochastic ice loads spectrum of Bohai Sea, the time histories of the stochastic ice loads of Bohai Sea are simulated. Fatigue damage analysis is carried out in time domain utilizing the finite element method considering soil and bridge structure interaction. The effect of soil conditions and water depth on the cumulative fatigue damage of the pile-supported bridges is studied. Numerical results indicate that in comparison with stiff soil conditions, pile-supported bridges in soft oil conditions can increase the cumulative fatigue damage substantially; pile-supported bridges in deep water also can increase the cumulative fatigue damage obviously. The study presented the first danger position of cumulative damage of the pile cross section under stochastic ice loads. The findings of this study can be used to fatigue damage evaluation and bridge construction in the ice-covered sea area.http://dx.doi.org/10.1155/2020/1853963 |
| spellingShingle | Tianyu Wu Wenliang Qiu Guangrun Wu Fatigue Damage Evaluation of Pile-Supported Bridges under Stochastic Ice Loads Advances in Civil Engineering |
| title | Fatigue Damage Evaluation of Pile-Supported Bridges under Stochastic Ice Loads |
| title_full | Fatigue Damage Evaluation of Pile-Supported Bridges under Stochastic Ice Loads |
| title_fullStr | Fatigue Damage Evaluation of Pile-Supported Bridges under Stochastic Ice Loads |
| title_full_unstemmed | Fatigue Damage Evaluation of Pile-Supported Bridges under Stochastic Ice Loads |
| title_short | Fatigue Damage Evaluation of Pile-Supported Bridges under Stochastic Ice Loads |
| title_sort | fatigue damage evaluation of pile supported bridges under stochastic ice loads |
| url | http://dx.doi.org/10.1155/2020/1853963 |
| work_keys_str_mv | AT tianyuwu fatiguedamageevaluationofpilesupportedbridgesunderstochasticiceloads AT wenliangqiu fatiguedamageevaluationofpilesupportedbridgesunderstochasticiceloads AT guangrunwu fatiguedamageevaluationofpilesupportedbridgesunderstochasticiceloads |