Model for Wastage Allowance and Strength Properties of Pipe Piles Exposed to Marine Corrosion
The study’s objective is to analyze the mechanical properties of steel pipe piles as a part of a trestle bridge subjected to five years of natural marine corrosion degradation. Sixteen tensile specimens are extracted from the steel pipe piles in the splash, tidal, and immersion zones. The experiment...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/12/1/113 |
| _version_ | 1827371710189404160 |
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| author | Ruilin Xia Yordan Garbatov Changyong Liu Mingyang Sun |
| author_facet | Ruilin Xia Yordan Garbatov Changyong Liu Mingyang Sun |
| author_sort | Ruilin Xia |
| collection | DOAJ |
| description | The study’s objective is to analyze the mechanical properties of steel pipe piles as a part of a trestle bridge subjected to five years of natural marine corrosion degradation. Sixteen tensile specimens are extracted from the steel pipe piles in the splash, tidal, and immersion zones. The experimental tensile test results are used to establish regression equations defining the elastic modulus, yield strength, strain hardening index, and strength coefficient for the true stress–strain curves of the three regions. A non-linear time-dependent mathematical model is exploited to identify the corrosion degradation, using the data from one single corrosion degradation measurement campaign. The analysis indicates that the splash zone is experiencing the most severe corrosion degradation, and there are progressive losses in the mechanical properties of each zone as the corrosion degradation progresses. The established relationships of the mechanical properties, as a function of the ratio of corroded plate thickness to the as-built one, can be used as a fast-engineering approach to identify the mechanical properties of severely corroded piles. The corrosion degradation allowance is also defined using the first-order reliability method, accounting for existing uncertainties covered by the partial safety factors. By examining the impact of marine corrosion on the mechanical properties of marine structures and developing predictive models to assess the corrosion’s effect on material strength and corrosion allowance, the study aims to improve offshore structures’ safety, design, and maintenance. |
| first_indexed | 2024-03-08T10:45:26Z |
| format | Article |
| id | doaj.art-9131f2b37c814f6fbad086e9db3de710 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-08T10:45:26Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-9131f2b37c814f6fbad086e9db3de7102024-01-26T17:15:59ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-01-0112111310.3390/jmse12010113Model for Wastage Allowance and Strength Properties of Pipe Piles Exposed to Marine CorrosionRuilin Xia0Yordan Garbatov1Changyong Liu2Mingyang Sun3School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaCentre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Tecnico, Universidade de Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, PortugalSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaCollege of Civil Engineering and Transportation, Northeast Forestry University, Harbin 150040, ChinaThe study’s objective is to analyze the mechanical properties of steel pipe piles as a part of a trestle bridge subjected to five years of natural marine corrosion degradation. Sixteen tensile specimens are extracted from the steel pipe piles in the splash, tidal, and immersion zones. The experimental tensile test results are used to establish regression equations defining the elastic modulus, yield strength, strain hardening index, and strength coefficient for the true stress–strain curves of the three regions. A non-linear time-dependent mathematical model is exploited to identify the corrosion degradation, using the data from one single corrosion degradation measurement campaign. The analysis indicates that the splash zone is experiencing the most severe corrosion degradation, and there are progressive losses in the mechanical properties of each zone as the corrosion degradation progresses. The established relationships of the mechanical properties, as a function of the ratio of corroded plate thickness to the as-built one, can be used as a fast-engineering approach to identify the mechanical properties of severely corroded piles. The corrosion degradation allowance is also defined using the first-order reliability method, accounting for existing uncertainties covered by the partial safety factors. By examining the impact of marine corrosion on the mechanical properties of marine structures and developing predictive models to assess the corrosion’s effect on material strength and corrosion allowance, the study aims to improve offshore structures’ safety, design, and maintenance.https://www.mdpi.com/2077-1312/12/1/113marine environmentscorroded steel pipe piletensile testtri-linear constitutive modeltime-dependent corrosion degradation |
| spellingShingle | Ruilin Xia Yordan Garbatov Changyong Liu Mingyang Sun Model for Wastage Allowance and Strength Properties of Pipe Piles Exposed to Marine Corrosion Journal of Marine Science and Engineering marine environments corroded steel pipe pile tensile test tri-linear constitutive model time-dependent corrosion degradation |
| title | Model for Wastage Allowance and Strength Properties of Pipe Piles Exposed to Marine Corrosion |
| title_full | Model for Wastage Allowance and Strength Properties of Pipe Piles Exposed to Marine Corrosion |
| title_fullStr | Model for Wastage Allowance and Strength Properties of Pipe Piles Exposed to Marine Corrosion |
| title_full_unstemmed | Model for Wastage Allowance and Strength Properties of Pipe Piles Exposed to Marine Corrosion |
| title_short | Model for Wastage Allowance and Strength Properties of Pipe Piles Exposed to Marine Corrosion |
| title_sort | model for wastage allowance and strength properties of pipe piles exposed to marine corrosion |
| topic | marine environments corroded steel pipe pile tensile test tri-linear constitutive model time-dependent corrosion degradation |
| url | https://www.mdpi.com/2077-1312/12/1/113 |
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