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《Journal of Zhejiang University(Engineering Science)》 2007-01
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Dynamic response of reinforced pavements system subjected to moving loads

LIU Fei-yu,ZHAO Guo-xing,CAI Yuan-qiang,SUN Hong-lei(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310027,China)  
The concrete reinforced pavements was simplified as an elastic beam and the reinforced base was treated as a transversely isotropic layer.With considering the influence of porewater in the subgrade,the dynamic response of reinforced pavements subjected to moving loads was studied analytically and numerically under conditions of plane strain.The Biot's full dynamic poroelastic theory was employed under the assumption of an incompressible solid grain and neglecting the apparent mass density.The loading function was presented by a Fourier series expansion.The governing equations of motion were solved by using the boundary condition.The interaction between the beam and the pavement was considered and the vertical displacement of the beam and the pavement at the interface was assumed to be identical.The mechanical behavior of the reinforced pavements was investigated through varying the reinforced ratio,elastic modulus of reinforcement and load speed.Numerical results indicated that the effect of reinforcement on soil was significant when the reinforcing ratio ranged from 0.010 to 0.022.Furthermore,the vertical displacement of reinforced pavements increased with increase in load speed and decreased rapidly after the vertical displacement reached peak.
【Fund】: 国家自然科学基金资助项目(50478081)
【CateGory Index】: U411
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