Frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regions
The Manzhouli 500 kV electrical transmission line travels more than 218 km through seasonal frozen regions, which result in many freezing soil engineering problems with respect to the transmission tower foundations. Physical model tests of independent reinforced concrete foundations at various tempe...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-02-01
|
| Series: | Soils and Foundations |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0038080623000057 |
| _version_ | 1811159978862444544 |
|---|---|
| author | Liang Tang Zhihe Cheng Shengyi Cong Xianzhang Ling |
| author_facet | Liang Tang Zhihe Cheng Shengyi Cong Xianzhang Ling |
| author_sort | Liang Tang |
| collection | DOAJ |
| description | The Manzhouli 500 kV electrical transmission line travels more than 218 km through seasonal frozen regions, which result in many freezing soil engineering problems with respect to the transmission tower foundations. Physical model tests of independent reinforced concrete foundations at various temperatures were conducted and verified by numerical simulation to investigate the frost-heaving characteristics of the reinforced concrete foundation in an alpine seasonally frozen region. The evolution of the temperature field, frost-heaving force, and water migration of frozen soil were studied in an open water refill environment with a dead load. The heave force in the foundation soil increases as temperature decreases. The horizontal heave force in the middle and upper parts of the foundation can reach 540 kPa. However, the maximum tangential frost-heaving force becomes 3.83 kN, and the maximum frozen depth of the frozen soil was 240 mm. During the freezing process, the frost heave of the foundation was significantly more noticeable. The correlation between experimental and simulated values is good, and each parameter’s variation error is less than 5 %. Finally, control measures of frost heave were proposed to guide engineering practice based on experimental and numerical studies. |
| first_indexed | 2024-04-10T05:49:54Z |
| format | Article |
| id | doaj.art-95419985b5644415a06b090f03a740d6 |
| institution | Directory Open Access Journal |
| issn | 2524-1788 |
| language | English |
| last_indexed | 2024-04-10T05:49:54Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Soils and Foundations |
| spelling | doaj.art-95419985b5644415a06b090f03a740d62023-03-05T04:22:59ZengElsevierSoils and Foundations2524-17882023-02-01631101276Frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regionsLiang Tang0Zhihe Cheng1Shengyi Cong2Xianzhang Ling3School of Civil Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China; Chongqing Research Institute, Harbin Institute of Technology, Chongqing 401135, ChinaCorresponding author.; School of Civil Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China; Chongqing Research Institute, Harbin Institute of Technology, Chongqing 401135, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China; Chongqing Research Institute, Harbin Institute of Technology, Chongqing 401135, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China; Chongqing Research Institute, Harbin Institute of Technology, Chongqing 401135, ChinaThe Manzhouli 500 kV electrical transmission line travels more than 218 km through seasonal frozen regions, which result in many freezing soil engineering problems with respect to the transmission tower foundations. Physical model tests of independent reinforced concrete foundations at various temperatures were conducted and verified by numerical simulation to investigate the frost-heaving characteristics of the reinforced concrete foundation in an alpine seasonally frozen region. The evolution of the temperature field, frost-heaving force, and water migration of frozen soil were studied in an open water refill environment with a dead load. The heave force in the foundation soil increases as temperature decreases. The horizontal heave force in the middle and upper parts of the foundation can reach 540 kPa. However, the maximum tangential frost-heaving force becomes 3.83 kN, and the maximum frozen depth of the frozen soil was 240 mm. During the freezing process, the frost heave of the foundation was significantly more noticeable. The correlation between experimental and simulated values is good, and each parameter’s variation error is less than 5 %. Finally, control measures of frost heave were proposed to guide engineering practice based on experimental and numerical studies.http://www.sciencedirect.com/science/article/pii/S0038080623000057Transmission lineFrozen soilModel testSeasonally frozen region |
| spellingShingle | Liang Tang Zhihe Cheng Shengyi Cong Xianzhang Ling Frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regions Soils and Foundations Transmission line Frozen soil Model test Seasonally frozen region |
| title | Frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regions |
| title_full | Frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regions |
| title_fullStr | Frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regions |
| title_full_unstemmed | Frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regions |
| title_short | Frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regions |
| title_sort | frost heave performance of a foundation at an overhead transmission line in the alpine seasonal frozen regions |
| topic | Transmission line Frozen soil Model test Seasonally frozen region |
| url | http://www.sciencedirect.com/science/article/pii/S0038080623000057 |
| work_keys_str_mv | AT liangtang frostheaveperformanceofafoundationatanoverheadtransmissionlineinthealpineseasonalfrozenregions AT zhihecheng frostheaveperformanceofafoundationatanoverheadtransmissionlineinthealpineseasonalfrozenregions AT shengyicong frostheaveperformanceofafoundationatanoverheadtransmissionlineinthealpineseasonalfrozenregions AT xianzhangling frostheaveperformanceofafoundationatanoverheadtransmissionlineinthealpineseasonalfrozenregions |