论文部分内容阅读
基于Biot波动理论和广义热弹性理论,对简谐线源荷载(力荷载和热荷载)作用下的热-流-固耦合地基的动力响应问题进行了研究。将地基看成是均质各向同性、完全饱和的多孔半空间介质,利用无量纲化和Fourier变换方法对热-流-固耦合控制方程进行简化,得到了变换域内应力分量、位移分量、温度分布及超孔隙水压力的一般解,并利用Fourier逆变换得到了相应的积分形式解答。通过数值计算对按热-流-固耦合理论、饱和多孔弹性理论和热弹性理论得到的结果进行了比较,同时分析了热-流-固耦合条件下热荷载激振频率对竖向应力、竖向位移、温度分布以及超孔隙水压力的影响。
Based on the Biot wave theory and the generalized thermoelastic theory, the dynamic response of the thermo-fluid-solid coupling foundation under the harmonic source load (force and thermal load) is studied. The foundation is considered as a homogeneous isotropic and fully saturated porous half-space medium. The governing equations of heat-fluid-solid coupling are simplified by the dimensionless and Fourier transform methods, and the stress components, displacement components, temperature Distribution and excess pore water pressure of the general solution, and the use of inverse Fourier transform obtained the corresponding integral form of solution. The numerical results are compared with those obtained by thermo-fluid-solid coupling theory, saturated porous elasticity theory and thermo-elastic theory. The effect of thermal load-excitation frequency on vertical stress, Effect on displacement, temperature distribution and excess pore water pressure.