| 土的力学性质对冻胀力影响的试验研究 |
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| 作者姓名： | Anatoli Brouchkov |
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| 作者单位： | Research Center for North Eurasia and North Pacific Regions, Hokkaido University, W8 N9 Kita-ku,Sapporo, Hokkaido 060-0809, Japan |
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| 摘 要： | Frost heaving stresses are a result of thermal, mechanical, and chemical forces. The process is complicated, and despite numerous publications on the subject, as yet there is no clear consensus on the model of mechanical interaction for soil freezing. Frost heaving stresses depends on mechanical properties of soil and conditions of measurements. Mechanical equilibrium between water, ice and soil particles based on the generalized Clapeyron equation and deformability of the components is considered. Increase of volume of freezing soil due to water flow to freezing fridge and phase transfer affects surrounding soil layers and appears to be the major reason of change of stress-strain conditions. A simplified model of mechanical interaction between soil and engineering construction is proposed. Experimental results of study of frost heaving forces by sensors of variable frigidity are presented. The experiments with different types of soil in conditions of open and close system were performed to provide a basis for the model and further estimations. Ongoing improvements and possible applications are discussed.
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| 关 键 词： | mechanical properties of soil frost heaving stresses influence 土的力学性质 冻胀力 影响 试验 研究 Forces Heaving Frost Mechanical Properties of Soil Influence Study applications experiments different open system basis Experimental results study |
Experimental Study of Influence of Mechanical Properties of Soil on Frost Heaving Forces |
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| Anatoli Brouchkov.Experimental Study of Influence of Mechanical Properties of Soil on Frost Heaving Forces[J].Journal of Glaciology and Geocryology,2004,26(Z1):26-34. |
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| Authors: | Anatoli Brouchkov |
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| Abstract: | Frost heaving stresses are a result of thermal, mechanical, and chemical forces. The process is complicated, and despite numerous publications on the subject, as yet there is no clear consensus on the model of mechanical interaction for soil freezing. Frost heaving stresses depends on mechanical properties of soil and conditions of measurements. Mechanical equilibrium between water, ice and soil particles based on the generalized Clapeyron equation and deformability of the components is considered. Increase of volume of freezing soil due to water flow to freezing fridge and phase transfer affects surrounding soil layers and appears to be the major reason of change of stress-strain conditions. A simplified model of mechanical interaction between soil and engineering construction is proposed. Experimental results of study of frost heaving forces by sensors of variable frigidity are presented. The experiments with different types of soil in conditions of open and close system were performed to provide a basis for the model and further estimations. Ongoing improvements and possible applications are discussed. |
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| Keywords: | mechanical properties of soil frost heaving stresses influence |
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