摘要
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。
Problems of one-dimensional thermal consolidation of saturated soil under periodic fluctuation of surface temperature were investigated theoretically by establishing the thermal consolidation model.The analytical solutions of excess pore water pressure,temperature increment were deduced by the theory of partial differential equations,and the expressions of settlement were also given.One-dimensional thermal consolidation behaviour of saturated soil was investigated by comparing with the Terzaghi consolidation solution.The results shows that the behaviour of thermal consolidation is affected greatly by the temperature which is embodied by the temperature increase,the rate of heat conduction and period of temperature fluctuation.Under periodic fluctuation of surface temperature,there will be a fluctuation in the behaviour of excess pore-water pressure and settlement in the process of thermal consolidation.
出处
《工业建筑》
CSCD
北大核心
2010年第8期86-90,共5页
Industrial Construction
关键词
周期波动
饱和土
热固结
解析解
periodic fluctuation
saturated soil
thermal consolidation
analytical solution
