Dynamic response of pavements on poroelastic half-space soil medium to a moving traffic load
Dynamic response of pavements on poroelastic half-space soil medium to a moving traffic load
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DOI：
10.1016/j.compgeo.2008.03.007
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发表时间：
2009
影响因子：
5.3
通讯作者：
Yuanqiang Cai;Z. Cao;Honglei Sun;Changjie Xu
中科院分区：
文献类型：
--
作者：
Yuanqiang Cai;Z. Cao;Honglei Sun;Changjie Xu
本文研究了移动交通荷载作用下路面系统的稳态响应。交通荷载采用四个矩形荷载压力来模拟，刚性和柔性路面系统均视为半空间土介质上的无限大板。板和多孔弹性半空间之间的接触表面被假定为是光滑的和完全可渗透的。板的分析采用Kirchhoff小挠度薄板理论，而孔隙弹性半空间的分析采用毕奥的完全动力孔隙弹性理论。利用板与多孔弹性半空间的协调条件，得到了路面系统的频域波数域解。通过快速傅里叶逆变换，得到了时域解。此外，加载速度，土壤的渗透性，板的抗弯刚度对路面系统的响应的影响进行了研究。数值结果表明，这些参数对路面系统的动力响应有显著的影响。
This paper presents an investigation of the steady-state response of pavement systems subjected to a moving traffic load. The traffic loads are simulated by four rectangular load pressures, and the rigid and flexible pavement systems are regarded as an infinite plate resting on a poroelastic half-space soil medium. The contact surface between the plate and the poroelastic half-space is assumed to be smooth and fully permeable. Kirchhoff small-deflection thin-plate theory is employed to analyze the plate, while Biot’s fully dynamic poroelastic theory is used to characterize the poroelastic half-space. The frequency wave-number domain solution of the pavement system is obtained by the compatibility condition between the plate and the poroelastic half-space. By applying the inverse fast Fourier transform, the time domain solution is obtained. Also, the influences of the load speed, the permeability of the soil, and the flexural rigidity of the plate on the response of the pavement system are investigated. The numerical results show that the influences of these parameters on the dynamic response of the pavement system are significant.