(1. State Key Laboratory of Frozen Soil Engineering，Cold and Arid Regions Environmental and Engineering Research Institute，Chinese Academy of Sciences，Lanzhou，Gansu 730000，China；2. University of Chinese Academy Sciences，Beijing 100049，China；3. College of Geographical Sciences，Nanjing Normal University，Nanjing，Jiangsu 210000，China)
Abstract：The freeze-thaw action in seasonal frozen regions can lead to moisture migration in soil. When the static load is applied on the soil，the stress fields in soil change，and then the moisture contents and the pore water pressures change accordingly. The variations of pore water pressure and moisture in soil were studied with the model test under the freeze-thaw and static load actions. The test results indicate that the variation of pore water pressure is stable during the initial stage，then increases rapidly and finally varies cyclically in two cases with or without loading. The pore water pressure increases and the moisture content decreases with the depth of soil in the case without loading. Under the load condition，the pore water pressure and moisture content at the upper and the middle position of the soil body were greater than those at two sides of soil body. In a freeze-thaw cycle，the pore water pressure and moisture content increase with the temperature rising. The pore water pressure and moisture content change with temperature with a time delay.
肖东辉1，2，马 巍1，赵淑萍3，张 泽1，冯文杰1，张莲海1. 冻融与荷载作用下土体内部孔隙水压力、水分变化规律及其模型试验研究[J]. 岩石力学与工程学报, 2017, 36(4): 977-986.
XIAO Donghui1，2，MA Wei1，ZHAO Shuping3，ZHANG Ze1，FENG Wenjie1，ZHANG Lianhai1. Research on pore water pressure and moisture content in soil subjected to freeze-thaw cycles and loading action by model test. , 2017, 36(4): 977-986.
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2017, Vol. 36 
