Heat Transfer Between Concrete Bored Cast-In-Place Piles and Surrounding Frozen Soil in Ice-Rich Area
Journal of Civil, Construction and Environmental Engineering
Volume 5, Issue 5, October 2020, Pages: 102-107
Received: Aug. 10, 2020;
Accepted: Aug. 28, 2020;
Published: Sep. 19, 2020
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Ning Yan, College of Civil Engineering, Northeast Forestry University, Harbin, China
Tianlai Yu, College of Civil Engineering, Northeast Forestry University, Harbin, China
Based on the concrete test of foundation pile and the heat transfer theory between pile and soil, the heat transfer rule of pile and soil in ice-rich tundra is studied. The results show that the heat flow of foundation pile can be divided into vertical and horizontal heat flows. The vertical heat flow mainly occurs at the top of the pile and reaches the maximum value of 15.36w /m2 on 3d. It caused the pile top temperature to drop so fast that it dropped below 0°C in 3d. The value of the horizontal heat flow is 2~3 times that of the vertical heat flow. Its distribution is in descending order: the middle, the top and the bottom of the pile. The maximum temperature difference between pile center and pile wall is 6.8°C because of transverse heat flow. Local high temperature zone is formed inside the pile due to the relatively slow absorption process of thawing permafrost. Then the temperature dropped rapidly, reaching 0°C at 28d. The maximum disturbance radius in the frozen soil reaches 1.5m. Insulation layer can be added to the outside of the foundation pile during construction to obtain more uniform concrete temperature field, so as to improve the concrete strength and reduce the disturbance to the frozen soil. The construction period should be in summer.
Heat Transfer Between Concrete Bored Cast-In-Place Piles and Surrounding Frozen Soil in Ice-Rich Area, Journal of Civil, Construction and Environmental Engineering.
Vol. 5, No. 5,
2020, pp. 102-107.
Guo Jing-Ting, Han Feng-Lin, Hu Yuan-Man, et al. Ecological characteristics of vegetation and their responses to permafrost degradation in the north slope of Great Khingan Mountain valley of northeast China [M]. Acta Ecologica Sinica, 2017, 37 (19): 6552-6561.
LENG Yi-fei, ZHANG Xi-Fa, YANG Feng-Xue, et al. Experimental research on unfrozen water content of frozen soils by calorimetry [J]. Rock and Soil Mechanics, 2010: 3759.
LIU Shi-Wei, ZHANG Ming-Jian. Research status of physical and mechanical properties of high temperature frozen soil [J]. Journal of Glaciology and Geocryology, 2012, 34 (01): 121.
SHANG Yun-Hu, NIU Fu-Jun, LIU Ming-Haoet al. Long-term effect of a pile foundation on ground temperatures in permafrost regions [J]. Chinese Journal of Rock Mechanics and Engineering, 2017, 36 (09): 2313-2323.
XU Chu-Hua. Research on axial bearing behavior of cast-in-place concrete pile in permafrost region [D]. Harbin: Harbin Institute of Technology, 2009, 1.
WANG Xiao-Li, CHEN Pin-Zhi, WU Shao-Hai. Research and application of the form of Qinghai-Tibet Railway Foundation pile [J]. Chinese Railways, 2003, (1): 66-68.
FU Jin, JIANG Yu, PENG Hui, et al. Early refreezing law of large-diameter cast-i-place piles in permafrost regions [J]. Journal of Traffic and Transportation Engineering, 2016, 16 (4): 121.
XION Wei, LIU Ming-Gui, ZHANG Qi-Heng, et al. Study on the temperature field of foundation piles in permafrost regions [J]. Rock and Soil Mechanics, 2009, 30 (6): 1658-1664.
SHANG Yun-Hu, YUAN Kun, NIU Fu-Jun, et al. Study on ground temperature of cast-in-place pile of bridge in permafrost regions [J]. Journal of Glaciology and Geocryology, 2016, 38 (4): 1129-1135.
WANG Xu, JIANG Dai-jun, ZHAO Xin-yu, et al. An experimental study on refreezing characteristics of large-diameter bored pile in different permafrost areas of the Qinghai-Tibet plateau [J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23 (24): 4206-4211.
WANG Xu, JIANG Daijun, ZHAO Xinyu, et al. Experimental study on bearing features of bored pile under non-refreezing condition in permafrost region [J]. Chinese Journal of Geotechnical Engineering, 2005, 27 (1): 81-84.
WANG Xu, JIANG Daijun, LIU Deren, et al. Experimental study of bearing characteristics of large-diameter cast in-place bored pile under non-refreezing condition in low-temperature permafrost ground [J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32 (9): 1807-1 812.
CHAO Dong-Gen, LI Jing-Ping. Experimental Analysis on the Thermal Influence of Cast-in-place Pile's Casting Temperature and Hydration Heat on its Surrounding Frozen Soil [J]. Highway, 2017, 6 (3): 55-58.
Lei Shen, Qingwen Ren, Gianluca Cusatis, et al. Numerical Study on Crack Thermal Resistance Effect on Thermo-Mechanical Coupled Behavior of Concrete Structure at Room Temperature [J]. International Journal of Solids and Structures, 2020, 6 (4): 182-183.
Orlando B, Andersland, Branko Ladanyi. Frozen Ground Engineering, and Edition [M]. Beijing: China Architecture & Building Press. 2011. 7: 47.
Yuan Xizhong, Ma Wei, Liu Yongzhi. Study on thermal regime of high-temperature frozen soil while construction of cast-in-place pile [J]. Chinese Journal of Rock Mechanics and Engineering, 2005 (6): 1052-1055.
ZHENG Xian-Chang, ZHENG Wei-Feng. Simulation test and basic Countermeasure research on thawing subsidence and frost heave of frozen soil in Zhongshan Station, Antarctica, China [J]. Industrial architecture. 2010, 6 (27): 155.
Ministry of Construction, PRC. GB50324-2014Code for permafrost Engineering Geological survey [S]. State Forestry Bureau, 2014.
China Meteorological Data Network. https://data.cma.cn/data/cdcindex/cid/6d1b5efbdcbf9a58.html?pid=3372324af43a4fef. National Meteorological Science Data Center.
XU Xue-Zu, WANG Jia-Cheng, ZHAN Li-xin. Permafrost physics [M]. Beijing: Science Press, 010: 79-106.