Strain response analysis of X65 steel pipeline under thawing settlement
Soil displacement caused by frost heave and thawing settlement will pose a great threat to the structural safety of buried pipelines. Herein, a numerical solution model for parameterization of pipeline stress-strain response under the action of displacement caused by thawing settlement was establish...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Oil & Gas Storage and Transportation
2022-05-01
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| Series: | You-qi chuyun |
| Subjects: | |
| Online Access: | http://yqcy.xml-journal.net/cn/article/doi/10.6047/j.issn.1000-8241.2022.05.006 |
| _version_ | 1797210111404408832 |
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| author | Jianping LIU Hong ZHANG Mengying XIA Yue YANG Tianwei KONG Kezheng ZHANG Xiaoben LIU |
| author_facet | Jianping LIU Hong ZHANG Mengying XIA Yue YANG Tianwei KONG Kezheng ZHANG Xiaoben LIU |
| author_sort | Jianping LIU |
| collection | DOAJ |
| description | Soil displacement caused by frost heave and thawing settlement will pose a great threat to the structural safety of buried pipelines. Herein, a numerical solution model for parameterization of pipeline stress-strain response under the action of displacement caused by thawing settlement was established with the nonlinear finite element program ABAQUS and the INP programming language. The accuracy of model was verified with the test results. Meanwhile, the distribution characteristics of pipeline strain were studied through the analysis of influencing factors. The results show that: for X65 pipeline passing through the ice-rich permafrost area where the thawing settlement area is in small width, the maximum axial strain is located in the center of the thawing settlement area, and the tensile strain of the pipeline is greater than the compressive strain, so that the entire pipeline is in the state of tension. However, when the thawing settlement area is wider than 60 m, the pipeline is subjected to thawing settlement together with the ground, with bending strain as the maximum strain, which is located at the edge of the thawing settlement area. Besides, the widening of thawing settlement area will not affect the pipeline strain significantly. Therefore, attention should be paid to the identification of the range of thawing settlement areas in the geohazard monitoring. Generally, for the thawing settlement areas with small width, pipeline strain in the center and edge of thawing settlement areas should be monitored, while for those thawing settlement areas with width larger than 60 m, the pipeline strain at the edge of thawing settlement areas should be monitored. |
| first_indexed | 2024-04-24T10:05:24Z |
| format | Article |
| id | doaj.art-8b79c92b118249048cc9e8abe01f0da2 |
| institution | Directory Open Access Journal |
| issn | 1000-8241 |
| language | zho |
| last_indexed | 2024-04-24T10:05:24Z |
| publishDate | 2022-05-01 |
| publisher | Editorial Office of Oil & Gas Storage and Transportation |
| record_format | Article |
| series | You-qi chuyun |
| spelling | doaj.art-8b79c92b118249048cc9e8abe01f0da22024-04-13T02:20:11ZzhoEditorial Office of Oil & Gas Storage and TransportationYou-qi chuyun1000-82412022-05-0141554254810.6047/j.issn.1000-8241.2022.05.006yqcy-41-5-542Strain response analysis of X65 steel pipeline under thawing settlementJianping LIU0Hong ZHANG1Mengying XIA2Yue YANG3Tianwei KONG4Kezheng ZHANG5Xiaoben LIU6College of Safety and Ocean Engineering, China University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyCollege of Safety and Ocean Engineering, China University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyCollege of Safety and Ocean Engineering, China University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyCollege of Safety and Ocean Engineering, China University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyCollege of Safety and Ocean Engineering, China University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyCNOOC Gas and Power Group Co. Ltd.College of Safety and Ocean Engineering, China University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologySoil displacement caused by frost heave and thawing settlement will pose a great threat to the structural safety of buried pipelines. Herein, a numerical solution model for parameterization of pipeline stress-strain response under the action of displacement caused by thawing settlement was established with the nonlinear finite element program ABAQUS and the INP programming language. The accuracy of model was verified with the test results. Meanwhile, the distribution characteristics of pipeline strain were studied through the analysis of influencing factors. The results show that: for X65 pipeline passing through the ice-rich permafrost area where the thawing settlement area is in small width, the maximum axial strain is located in the center of the thawing settlement area, and the tensile strain of the pipeline is greater than the compressive strain, so that the entire pipeline is in the state of tension. However, when the thawing settlement area is wider than 60 m, the pipeline is subjected to thawing settlement together with the ground, with bending strain as the maximum strain, which is located at the edge of the thawing settlement area. Besides, the widening of thawing settlement area will not affect the pipeline strain significantly. Therefore, attention should be paid to the identification of the range of thawing settlement areas in the geohazard monitoring. Generally, for the thawing settlement areas with small width, pipeline strain in the center and edge of thawing settlement areas should be monitored, while for those thawing settlement areas with width larger than 60 m, the pipeline strain at the edge of thawing settlement areas should be monitored.http://yqcy.xml-journal.net/cn/article/doi/10.6047/j.issn.1000-8241.2022.05.006x65 pipelinethawing settlement of frozen soilpipe-soil couplingmechanical analysisstrain analysis |
| spellingShingle | Jianping LIU Hong ZHANG Mengying XIA Yue YANG Tianwei KONG Kezheng ZHANG Xiaoben LIU Strain response analysis of X65 steel pipeline under thawing settlement You-qi chuyun x65 pipeline thawing settlement of frozen soil pipe-soil coupling mechanical analysis strain analysis |
| title | Strain response analysis of X65 steel pipeline under thawing settlement |
| title_full | Strain response analysis of X65 steel pipeline under thawing settlement |
| title_fullStr | Strain response analysis of X65 steel pipeline under thawing settlement |
| title_full_unstemmed | Strain response analysis of X65 steel pipeline under thawing settlement |
| title_short | Strain response analysis of X65 steel pipeline under thawing settlement |
| title_sort | strain response analysis of x65 steel pipeline under thawing settlement |
| topic | x65 pipeline thawing settlement of frozen soil pipe-soil coupling mechanical analysis strain analysis |
| url | http://yqcy.xml-journal.net/cn/article/doi/10.6047/j.issn.1000-8241.2022.05.006 |
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