Numerical Analysis of Concrete Hydration Heat Impact on Frozen Soil Temperature around Cast-in-Place Piles
The hydration heat generated during the concreting of cast-in-place piles causes thermal disturbance to the surrounding permafrost, leading to its thawing. This further affects the stability of the pile foundation and degrades the construction progress. To explore the influence mechanisms of the con...
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ftdoajarticles:oai:doaj.org/article:f446382c38844e168630b51b714d76a4 2024-09-30T14:41:07+00:00 Numerical Analysis of Concrete Hydration Heat Impact on Frozen Soil Temperature around Cast-in-Place Piles Yueyue Wang Xuesong Mao Qian Wu Peichen Cai Min Ye Shunde Yin 2024-09-01T00:00:00Z https://doi.org/10.3390/ma17174375 https://doaj.org/article/f446382c38844e168630b51b714d76a4 EN eng MDPI AG https://www.mdpi.com/1996-1944/17/17/4375 https://doaj.org/toc/1996-1944 doi:10.3390/ma17174375 1996-1944 https://doaj.org/article/f446382c38844e168630b51b714d76a4 Materials, Vol 17, Iss 17, p 4375 (2024) permafrost cast-in-place piles hydration heat construction seasons boundary condition thermal disturbance Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 article 2024 ftdoajarticles https://doi.org/10.3390/ma17174375 2024-09-17T16:00:44Z The hydration heat generated during the concreting of cast-in-place piles causes thermal disturbance to the surrounding permafrost, leading to its thawing. This further affects the stability of the pile foundation and degrades the construction progress. To explore the influence mechanisms of the concrete hydration heat on the permafrost temperature field around the pile, as well as that of different construction seasons on the pile-side boundary conditions and permafrost temperature field, monitoring results of on-site tests and numerical simulation were used to analyze the distribution law of the pile soil temperature field in space and time, and the pile-side boundary conditions and permafrost temperature field during construction seasons. The results show that the temperature trend of the pile foundation can be divided into three stages: a rapid rise phase (0∼2 d), a rapid decline phase (2∼10 d), and a slow decline and stabilization phase (10∼90 d). As the radial distance from the pile center decreases, there occur a corresponding acceleration in temperature increase and an elevated maximum temperature rise (MTR). The influence range of the molding temperature and the hydration heat is about 1∼2 times the pile diameter and less than 1.5 m in the depth direction. Compared to the atmospheric temperature, there is a lag in the change in the permafrost temperature caused by accumulation of ground temperature, and the significant difference between the two leads to an increased rate of heat exchange at the boundary condition. Conducting drilling operation and cast-in-place pile construction in the cold seasons is conducive to reducing the thermal disturbance to the permafrost around the pile in permafrost areas. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Materials 17 17 4375 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
permafrost cast-in-place piles hydration heat construction seasons boundary condition thermal disturbance Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
spellingShingle |
permafrost cast-in-place piles hydration heat construction seasons boundary condition thermal disturbance Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Yueyue Wang Xuesong Mao Qian Wu Peichen Cai Min Ye Shunde Yin Numerical Analysis of Concrete Hydration Heat Impact on Frozen Soil Temperature around Cast-in-Place Piles |
topic_facet |
permafrost cast-in-place piles hydration heat construction seasons boundary condition thermal disturbance Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
description |
The hydration heat generated during the concreting of cast-in-place piles causes thermal disturbance to the surrounding permafrost, leading to its thawing. This further affects the stability of the pile foundation and degrades the construction progress. To explore the influence mechanisms of the concrete hydration heat on the permafrost temperature field around the pile, as well as that of different construction seasons on the pile-side boundary conditions and permafrost temperature field, monitoring results of on-site tests and numerical simulation were used to analyze the distribution law of the pile soil temperature field in space and time, and the pile-side boundary conditions and permafrost temperature field during construction seasons. The results show that the temperature trend of the pile foundation can be divided into three stages: a rapid rise phase (0∼2 d), a rapid decline phase (2∼10 d), and a slow decline and stabilization phase (10∼90 d). As the radial distance from the pile center decreases, there occur a corresponding acceleration in temperature increase and an elevated maximum temperature rise (MTR). The influence range of the molding temperature and the hydration heat is about 1∼2 times the pile diameter and less than 1.5 m in the depth direction. Compared to the atmospheric temperature, there is a lag in the change in the permafrost temperature caused by accumulation of ground temperature, and the significant difference between the two leads to an increased rate of heat exchange at the boundary condition. Conducting drilling operation and cast-in-place pile construction in the cold seasons is conducive to reducing the thermal disturbance to the permafrost around the pile in permafrost areas. |
format |
Article in Journal/Newspaper |
author |
Yueyue Wang Xuesong Mao Qian Wu Peichen Cai Min Ye Shunde Yin |
author_facet |
Yueyue Wang Xuesong Mao Qian Wu Peichen Cai Min Ye Shunde Yin |
author_sort |
Yueyue Wang |
title |
Numerical Analysis of Concrete Hydration Heat Impact on Frozen Soil Temperature around Cast-in-Place Piles |
title_short |
Numerical Analysis of Concrete Hydration Heat Impact on Frozen Soil Temperature around Cast-in-Place Piles |
title_full |
Numerical Analysis of Concrete Hydration Heat Impact on Frozen Soil Temperature around Cast-in-Place Piles |
title_fullStr |
Numerical Analysis of Concrete Hydration Heat Impact on Frozen Soil Temperature around Cast-in-Place Piles |
title_full_unstemmed |
Numerical Analysis of Concrete Hydration Heat Impact on Frozen Soil Temperature around Cast-in-Place Piles |
title_sort |
numerical analysis of concrete hydration heat impact on frozen soil temperature around cast-in-place piles |
publisher |
MDPI AG |
publishDate |
2024 |
url |
https://doi.org/10.3390/ma17174375 https://doaj.org/article/f446382c38844e168630b51b714d76a4 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Materials, Vol 17, Iss 17, p 4375 (2024) |
op_relation |
https://www.mdpi.com/1996-1944/17/17/4375 https://doaj.org/toc/1996-1944 doi:10.3390/ma17174375 1996-1944 https://doaj.org/article/f446382c38844e168630b51b714d76a4 |
op_doi |
https://doi.org/10.3390/ma17174375 |
container_title |
Materials |
container_volume |
17 |
container_issue |
17 |
container_start_page |
4375 |
_version_ |
1811643547006271488 |