The vibration of a coupled pavement and unsaturated ground system subjected to a moving traffic load is semi-analytically studied. The pavement is modeled as an infinite Kirchhoff plate, and the unsaturated ground is presented by an unsaturated poroelastic half-space. The traffic load of a truck is simplified as a combination of 10 rectangular loads. The governing equations of the pavement-ground system are solved in the frequency domain using double Fourier transform. Subsequently, the results in the time domain are obtained by fast inverse Fourier transform. The effects of saturation of unsaturated soil, drainage condition, truck speed, axle load, pavement thickness, and elastic modulus on the dynamic responses of the system are studied. It is discovered that the increase in the saturation of unsaturated soil results in significant increases in the magnitudes of vertical displacement, acceleration, and pore air pressure. Additionally, the effects of other parameters significantly affect the dynamic responses of pavement-unsaturated poroelastic ground systems.

半解析研究了交通荷载作用下的人行道与非饱和地面耦合系统的振动。路面被建模为无限的Kirchhoff板，并且不饱和地面由不饱和多孔弹性半空间表示。卡车的交通负载简化为10个矩形负载的组合。使用双重傅里叶变换在频域中求解人行道-地面系统的控制方程。随后，通过快速傅里叶逆变换获得时域中的结果。研究了非饱和土的饱和度，排水条件，卡车速度，车轴载荷，路面厚度和弹性模量对系统动力响应的影响。发现不饱和土壤饱和度的增加导致垂直位移，加速度和孔隙气压的大小显着增加。此外，其他参数的影响会显着影响路面不饱和多孔弹性地面系统的动力响应。