Analytical dynamic displacement response of rigid pavements to moving concentrated and line loads

作者：Sun Lu^*

来源：International Journal of Solids and Structures, 2006, 43(14-15): 4370-4383.

DOI：10.1016/j.ijsolstr.2005.06.105

• slab
• moving load
• critical speed
• complex analysis
• integral transform

This paper presents the formulation of a plate of infinite dimensions (without boundary conditions) on an elastic foundation, subjected to a moving concentrated and line load of constant amplitude and speed, using a triple Fourier transform. The solution is carried out integration by residues. A closed-form solution of displacement field has been obtained for a moving load with subsonic, transonic and supersonic speeds. It is found that the maximum response of the slab occurs beneath the moving load and travels with the load at the same speed. It is also shown that a critical speed exists. If the moving load travels at critical speed, slab displacement becomes infinite in amplitude.

• 出版日期2006-7