|
Abstract The characteristics of porous elastic medium subjected to harmonic strip moving load are investigated analytically in the context of generalized thermoelastic theory by introducing relaxation time. The material of foundation，obeying Biot¢s dynamic poroelastic theory，is idealized as a uniform，fully saturated poroelastic half- space stratum. The coupled thermo-hydro-mechanical governing equations are derived by modifying Biot¢s dynamic poroelastic theory. The general solutions of temperature increment，stress，displacement and pore water pressure are obtained by employing Fourier transform. Considering the heat source acted on the surface of foundation and mixed boundary condition，analytical solutions in the form of integral are derived using the inverse method. Numerical results are obtained by using inverse Fourier transform and adaptive quadrature algorithm. The calculating results can be degenerated to the corresponding classical Flamant solution of static problem. Furthermore，the influence of the different heat source conditions on the temperature increment，stress，displacement and pore water pressure is discussed. Computing results show that the temperature increment is slightly affected by the heat source condition；and the distributions of stress，displacement and pore water pressure are obviously influenced by the heat source.
|
|
Received: 26 July 2009
|
|
|
|
