Long-Term Performance of the Water Infiltration and Stability of Fill Side Slope against Wetting in Expressways
Different settlements and instabilities of unsaturated subgrade subjected to wetting have been paid increasing attention in the southeast coastal areas of China. However, the treatments are costly when they are used in engineering. In addition, the long-term performances of the treatments are unclea...
| Principais autores: | , , |
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| Formato: | Artigo |
| Idioma: | English |
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MDPI AG
2022-06-01
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| coleção: | Applied Sciences |
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| Acesso em linha: | https://www.mdpi.com/2076-3417/12/12/5809 |
| _version_ | 1827662700556058624 |
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| author | Yuedong Wu Xiangyu Zhou Jian Liu |
| author_facet | Yuedong Wu Xiangyu Zhou Jian Liu |
| author_sort | Yuedong Wu |
| collection | DOAJ |
| description | Different settlements and instabilities of unsaturated subgrade subjected to wetting have been paid increasing attention in the southeast coastal areas of China. However, the treatments are costly when they are used in engineering. In addition, the long-term performances of the treatments are unclear. Based on seepage theory for unsaturated soils, a novel subgrade using a capillary barrier was proposed in this study to reduce the different settlements and stabilities. Compared with previous studies, a capillary barrier was merely applied in the landfill. The long-term performance and feasibility of a capillary barrier applied in a tilted subgrade slope is worthy of study, particularly in humid climates. Using Geo-Studio, the feasibility was verified by comparing a conventional subgrade with a subgrade using a capillary barrier in southeast coastal areas in terms of pore-water pressure, water content, settlement, and the safety factor. The numerical results showed that the subgrade using a capillary barrier could provide significant improvements in the performance of reducing the impact of pore-water pressure distribution it suffered from, so as to lead to smaller different settlements. The vertical settlement of the pavement using a capillary barrier over a 1 year period was 1 cm. Compared with a conventional subgrade, the settlement fell by 94%, and the safely factor increased by 15% for the subgrade using the capillary barrier. |
| first_indexed | 2024-03-10T00:32:36Z |
| format | Article |
| id | doaj.art-8673ebcfb4144072a41f909359adb5d1 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T00:32:36Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-8673ebcfb4144072a41f909359adb5d12023-11-23T15:22:43ZengMDPI AGApplied Sciences2076-34172022-06-011212580910.3390/app12125809Long-Term Performance of the Water Infiltration and Stability of Fill Side Slope against Wetting in ExpresswaysYuedong Wu0Xiangyu Zhou1Jian Liu2Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, ChinaKey Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, ChinaKey Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, ChinaDifferent settlements and instabilities of unsaturated subgrade subjected to wetting have been paid increasing attention in the southeast coastal areas of China. However, the treatments are costly when they are used in engineering. In addition, the long-term performances of the treatments are unclear. Based on seepage theory for unsaturated soils, a novel subgrade using a capillary barrier was proposed in this study to reduce the different settlements and stabilities. Compared with previous studies, a capillary barrier was merely applied in the landfill. The long-term performance and feasibility of a capillary barrier applied in a tilted subgrade slope is worthy of study, particularly in humid climates. Using Geo-Studio, the feasibility was verified by comparing a conventional subgrade with a subgrade using a capillary barrier in southeast coastal areas in terms of pore-water pressure, water content, settlement, and the safety factor. The numerical results showed that the subgrade using a capillary barrier could provide significant improvements in the performance of reducing the impact of pore-water pressure distribution it suffered from, so as to lead to smaller different settlements. The vertical settlement of the pavement using a capillary barrier over a 1 year period was 1 cm. Compared with a conventional subgrade, the settlement fell by 94%, and the safely factor increased by 15% for the subgrade using the capillary barrier.https://www.mdpi.com/2076-3417/12/12/5809unsaturated subgradecapillary barrierdistress control of wetting |
| spellingShingle | Yuedong Wu Xiangyu Zhou Jian Liu Long-Term Performance of the Water Infiltration and Stability of Fill Side Slope against Wetting in Expressways Applied Sciences unsaturated subgrade capillary barrier distress control of wetting |
| title | Long-Term Performance of the Water Infiltration and Stability of Fill Side Slope against Wetting in Expressways |
| title_full | Long-Term Performance of the Water Infiltration and Stability of Fill Side Slope against Wetting in Expressways |
| title_fullStr | Long-Term Performance of the Water Infiltration and Stability of Fill Side Slope against Wetting in Expressways |
| title_full_unstemmed | Long-Term Performance of the Water Infiltration and Stability of Fill Side Slope against Wetting in Expressways |
| title_short | Long-Term Performance of the Water Infiltration and Stability of Fill Side Slope against Wetting in Expressways |
| title_sort | long term performance of the water infiltration and stability of fill side slope against wetting in expressways |
| topic | unsaturated subgrade capillary barrier distress control of wetting |
| url | https://www.mdpi.com/2076-3417/12/12/5809 |
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