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针对地表温度周期波动的饱和土一维热固结问题,建立相应的热固结模型。利用偏微分理论,得到土层内部超静孔隙水压、温度增量的解析解,并进而得到地基沉降的表达式,由此分析饱和土的一维热固结性状,并与Terzaghi解进行比较。结果表明:热固结性状与温度增量、热传导速率、温度波动周期等有关;受地表温度周期波动的影响,超静孔隙水压、沉降也会出现波动性。
Aiming at the one-dimensional thermal consolidation of saturated soil with periodic fluctuations of surface temperature, a corresponding thermal consolidation model is established. Using partial differential theory, the analytic solution of excess pore water pressure and temperature increment inside the soil layer is obtained, and the expressions of ground settlement are obtained. The one-dimensional thermal consolidation properties of saturated soil are analyzed and compared with the Terzaghi solution . The results show that the thermosetting properties are related to the increment of temperature, the rate of heat conduction and the period of temperature fluctuation. Due to the influence of the periodic fluctuation of the surface temperature, the excess pore water pressure and settlement will also fluctuate.