Horizontal Bearing Capacity and Reliability of Piles in Coastal Soft Soil Considering the Time-Varying Characteristics
In order to study the influence of the creep of soft soil and the corrosion damage of reinforced concrete on the horizontal bearing behavior of piles, the novel <i>p</i>-<i>y</i> curve model was established considering the time-varying characteristics of soil parameters. The...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/2/247 |
| _version_ | 1797620095583780864 |
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| author | Pingbao Yin Kang Wang Lu Chen Yongjie Zhang Kaibo Yang Jie Wang |
| author_facet | Pingbao Yin Kang Wang Lu Chen Yongjie Zhang Kaibo Yang Jie Wang |
| author_sort | Pingbao Yin |
| collection | DOAJ |
| description | In order to study the influence of the creep of soft soil and the corrosion damage of reinforced concrete on the horizontal bearing behavior of piles, the novel <i>p</i>-<i>y</i> curve model was established considering the time-varying characteristics of soil parameters. The attenuation law of the bending stiffness of reinforced concrete piles under chloride erosion was analyzed by introducing the bending stiffness reduction factor. The limit state function of pile reliability analysis was then established considering the time-varying characteristics. The reliability index of a pile under horizontal displacement failure mode was obtained using the quadratic response surface method. Finally, the sensitivity analysis of random variables (cohesion, internal friction angle, concrete cover, and chloride concentration) on the time-varying reliability of a pile under horizontal displacement failure mode was carried out. The influence of the distribution types of soil parameters on the time-varying reliability was considered. The results show that the load-bearing characteristics of the horizontally loaded pile are impacted significantly by the time-varying characteristics of the soil. The maximum horizontal displacement of the pile increases nonlinearly with the increase in service time. When the horizontal displacement failure mode occurs, the variability in the internal friction angle has a significant impact on the reliability of the pile. The reliability index decreases nonlinearly with an increase in service time. When the soil parameters obey the extreme value type I distribution, the corresponding reliability index is greater than that of log-normal distribution and normal distribution. |
| first_indexed | 2024-03-11T08:36:55Z |
| format | Article |
| id | doaj.art-f737027ec3284b03b26b432d52322365 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-11T08:36:55Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-f737027ec3284b03b26b432d523223652023-11-16T21:26:32ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-01-0111224710.3390/jmse11020247Horizontal Bearing Capacity and Reliability of Piles in Coastal Soft Soil Considering the Time-Varying CharacteristicsPingbao Yin0Kang Wang1Lu Chen2Yongjie Zhang3Kaibo Yang4Jie Wang5Key Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Civil Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaKey Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha 410114, ChinaKey Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha 410114, ChinaKey Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha 410114, ChinaKey Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha 410114, ChinaIn order to study the influence of the creep of soft soil and the corrosion damage of reinforced concrete on the horizontal bearing behavior of piles, the novel <i>p</i>-<i>y</i> curve model was established considering the time-varying characteristics of soil parameters. The attenuation law of the bending stiffness of reinforced concrete piles under chloride erosion was analyzed by introducing the bending stiffness reduction factor. The limit state function of pile reliability analysis was then established considering the time-varying characteristics. The reliability index of a pile under horizontal displacement failure mode was obtained using the quadratic response surface method. Finally, the sensitivity analysis of random variables (cohesion, internal friction angle, concrete cover, and chloride concentration) on the time-varying reliability of a pile under horizontal displacement failure mode was carried out. The influence of the distribution types of soil parameters on the time-varying reliability was considered. The results show that the load-bearing characteristics of the horizontally loaded pile are impacted significantly by the time-varying characteristics of the soil. The maximum horizontal displacement of the pile increases nonlinearly with the increase in service time. When the horizontal displacement failure mode occurs, the variability in the internal friction angle has a significant impact on the reliability of the pile. The reliability index decreases nonlinearly with an increase in service time. When the soil parameters obey the extreme value type I distribution, the corresponding reliability index is greater than that of log-normal distribution and normal distribution.https://www.mdpi.com/2077-1312/11/2/247pilesoft soiltime-varying characteristicshorizontal load<i>p</i>-<i>y</i> curvereliability |
| spellingShingle | Pingbao Yin Kang Wang Lu Chen Yongjie Zhang Kaibo Yang Jie Wang Horizontal Bearing Capacity and Reliability of Piles in Coastal Soft Soil Considering the Time-Varying Characteristics Journal of Marine Science and Engineering pile soft soil time-varying characteristics horizontal load <i>p</i>-<i>y</i> curve reliability |
| title | Horizontal Bearing Capacity and Reliability of Piles in Coastal Soft Soil Considering the Time-Varying Characteristics |
| title_full | Horizontal Bearing Capacity and Reliability of Piles in Coastal Soft Soil Considering the Time-Varying Characteristics |
| title_fullStr | Horizontal Bearing Capacity and Reliability of Piles in Coastal Soft Soil Considering the Time-Varying Characteristics |
| title_full_unstemmed | Horizontal Bearing Capacity and Reliability of Piles in Coastal Soft Soil Considering the Time-Varying Characteristics |
| title_short | Horizontal Bearing Capacity and Reliability of Piles in Coastal Soft Soil Considering the Time-Varying Characteristics |
| title_sort | horizontal bearing capacity and reliability of piles in coastal soft soil considering the time varying characteristics |
| topic | pile soft soil time-varying characteristics horizontal load <i>p</i>-<i>y</i> curve reliability |
| url | https://www.mdpi.com/2077-1312/11/2/247 |
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