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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29830


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6269
Preliminary Design of Frozen Soil Simulation System Based on Finite Element Simulation
Abstract:
Full - Scale Accelerated Loading System, one part of “the Eleventh - Five - Year National Grand Technology Infrastructure Program" is a facility to evaluate the performance and service life of different kinds of pavements subjected to traffic loading under full - controlled environment. While simulating the environments of frigid zone and permafrost zone, the accurate control of air temperature, road temperature and roadbed temperature are the key points and also aporias for the designment. In this paper, numerical simulations are used to determine the design parameters of the frozen soil simulation system. At first, a brief introduction of the Full - Scale Accelerate Loading System was given. Then, the temperature control method of frozen soil simulation system was proposed. Finally, by using finite element simulations, the optimal design of frozen soil simulation system was obtained. This proposed design, which was obtained by finite element simulations, provided significant referents to the ultimate design of the environment simulation system.
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References:

[1] Zejiao Dong, Yiqiu Tan, Fengchen Chen, "Preliminary Design of Testing Segment for Accelerated Loading Facility Based on Finite Element Simulation Analysis," Asphalt Material Characterization, Accelerated Testing, and Highway Management: Selected Papers From the 2009 GeoHunan International Conference (GSP 190), Aug. 2009, pp. 72-78.
[2] Haleh Azari, Alaeddin Mohseni, Nelson Gibson, "Verification of Rutting Predictions from Mechanistic-Empirical Pavement Design Guide by Use of Accelerated Loading Facility Data," Journal of the Transportation Research Board, Volume 2057 / 2008, pp. 157-167, Nov, 2008.
[3] Yuchi Bin, Lu Shixun, Zhou Zuyi, etc., Practical Handbook of Refrigeration and Air Conditioning. Beijing: China Machine Press, 2001.
[4] Liu Zhiqiang, Lai Yuanming, Zhang Mingyi), Zhang Xuefu, Lu Hao, "Random temperature fields of embankment in permafrost," Science in China (Series D:Earth Sciences), volume 36(6), pp. 587-592, 2006.
[5] Lu Yajun, Ma Zuiliang, Yao Yang, Refrigeration In Air Conditioning System. Harbin: Harbin Engineering University Press, 1997.
[6] Zhao Lin, Cheng Guodong, Li Shuxun, Zhao Xinmin, Wang Shaoling, "The freezing and thawing process in active layer of permafrost around Wudaolian," Chinese Science Bulletin, volume 45(11), pp. 1206-1210, 2000.
[7] Bronfenbrener, L, "The modeling of the freezing process in fine-grained porous media: Application to the frost heave estimation," Cold Regions Science and Technology, volume 56(2-3) pp. 120-134, 2009.
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