Sensitivity Analysis of Pipe–Soil Interaction Influencing Factors under Frost Heaving
The mechanism of pipe–soil interaction under frost heaving is complicated due to many factors affecting the pipe–soil system. In order to analyze the sensitivity of various pipe–soil interaction influencing factors and highlight the relationship between the factors and the pipe’s mechanical characte...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/14/3/469 |
| _version_ | 1797613571621781504 |
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| author | Long Huang Yu Sheng Liping Chen Erxing Peng Xubin Huang Xiyan Zhang |
| author_facet | Long Huang Yu Sheng Liping Chen Erxing Peng Xubin Huang Xiyan Zhang |
| author_sort | Long Huang |
| collection | DOAJ |
| description | The mechanism of pipe–soil interaction under frost heaving is complicated due to many factors affecting the pipe–soil system. In order to analyze the sensitivity of various pipe–soil interaction influencing factors and highlight the relationship between the factors and the pipe’s mechanical characteristics during frost heaving, a pipe–soil interaction model based on a semi-infinite elastic frozen soil foundation is developed. Besides, the mechanical indices characterizing the influence factors and their change law are emphatically explored. The results show that the pipe stress changes most obviously at the transition region between the frost-heaving and non-frost-heaving regions. The equivalent stress increases nonlinearly with the increase of foundation coefficient, linearly with the increase of frost heave and elastic modulus of pipe, and decreases nonlinearly with the increase of transition length and pipe wall thickness. The peak stress of the pipe increases linearly with the increase of temperature difference. Moreover, the maximum allowable frost heave deformation decreases nonlinearly with the increase of oil pressure. This study helps provide theoretical reference for the adjustment, control, and prediction of stress and deformation in the design of buried pipelines under frost heaving. |
| first_indexed | 2024-03-11T06:56:38Z |
| format | Article |
| id | doaj.art-904bd53c112d492e8d4417d76f108d1d |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-11T06:56:38Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-904bd53c112d492e8d4417d76f108d1d2023-11-17T09:32:08ZengMDPI AGAtmosphere2073-44332023-02-0114346910.3390/atmos14030469Sensitivity Analysis of Pipe–Soil Interaction Influencing Factors under Frost HeavingLong Huang0Yu Sheng1Liping Chen2Erxing Peng3Xubin Huang4Xiyan Zhang5School of Civil Engineering, Lanzhou Institute of Technology, Lanzhou 730050, ChinaState Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaSchool of Civil Engineering, Lanzhou Institute of Technology, Lanzhou 730050, ChinaState Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaNorthwest Engineering Corporation Limited, Power China, Xi’an 710065, ChinaState Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, ChinaThe mechanism of pipe–soil interaction under frost heaving is complicated due to many factors affecting the pipe–soil system. In order to analyze the sensitivity of various pipe–soil interaction influencing factors and highlight the relationship between the factors and the pipe’s mechanical characteristics during frost heaving, a pipe–soil interaction model based on a semi-infinite elastic frozen soil foundation is developed. Besides, the mechanical indices characterizing the influence factors and their change law are emphatically explored. The results show that the pipe stress changes most obviously at the transition region between the frost-heaving and non-frost-heaving regions. The equivalent stress increases nonlinearly with the increase of foundation coefficient, linearly with the increase of frost heave and elastic modulus of pipe, and decreases nonlinearly with the increase of transition length and pipe wall thickness. The peak stress of the pipe increases linearly with the increase of temperature difference. Moreover, the maximum allowable frost heave deformation decreases nonlinearly with the increase of oil pressure. This study helps provide theoretical reference for the adjustment, control, and prediction of stress and deformation in the design of buried pipelines under frost heaving.https://www.mdpi.com/2073-4433/14/3/469buried pipesoilfrost heaveinteractioninfluencing factorssensitivity |
| spellingShingle | Long Huang Yu Sheng Liping Chen Erxing Peng Xubin Huang Xiyan Zhang Sensitivity Analysis of Pipe–Soil Interaction Influencing Factors under Frost Heaving Atmosphere buried pipe soil frost heave interaction influencing factors sensitivity |
| title | Sensitivity Analysis of Pipe–Soil Interaction Influencing Factors under Frost Heaving |
| title_full | Sensitivity Analysis of Pipe–Soil Interaction Influencing Factors under Frost Heaving |
| title_fullStr | Sensitivity Analysis of Pipe–Soil Interaction Influencing Factors under Frost Heaving |
| title_full_unstemmed | Sensitivity Analysis of Pipe–Soil Interaction Influencing Factors under Frost Heaving |
| title_short | Sensitivity Analysis of Pipe–Soil Interaction Influencing Factors under Frost Heaving |
| title_sort | sensitivity analysis of pipe soil interaction influencing factors under frost heaving |
| topic | buried pipe soil frost heave interaction influencing factors sensitivity |
| url | https://www.mdpi.com/2073-4433/14/3/469 |
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