Analytical theory for one-dimensional thermal consolidation of saturated soil under time-dependent loading

Based on seepage theory,thermoelasticity theory and consolidation theory for saturated soil,the one-dimensional thermal consolidation of saturated soil under time-dependent loading was investigated with analytical methods by establishing a mathematical model.The analytical solutions of excess pore-water pressure,temperature increase were derived based on the impulse theorem of the theory of partial differential equations,and the expressions of settlement,average consolidation degree were also given.A relevant computer program was developed,and the one-dimensional thermal consolidation behaviour of saturated soil was investigated by comparing with the consolidation solution without thermal effect.The results show that the behaviour of thermal consolidation is affected greatly by the loading time,the temperature increase and the rate of heat conduction.Due to the influence of temperature,the excess pore-water pressure dissipates more quickly and the settlement of ground decreases in the process of thermal consolidation.The average consolidation degrees defined by settlement and by pore-water pressure are different.