Dynamic Response of Thick Concrete Pavement Resting on the Kelvin Foundation under Fraffic Load
To study the dynamic response law of thick pavement resting on the Kelvin foundation due to a moving load,the thick concrete pavement is modelled as an infinite laminated slab with finite width,the traffic load is modelled as a local rectangular uniform load on the pavement.Dynamic responses of the pavement due to the traffic load are first derived in the form of integral function based on the laminated plate theory,trigonometric series and Fourier transformation technique in the wavenumber and frequency domain.The response results of the pavement are finally obtained using numerical inverse Fourier transformation method.The results show that the distributions of pavement's deflection,bending moment and shear force in the longitudinal direction are almost symmetric when load velocity is small.When the load velocity continues to increase,the distribution becomes asymmetric and the amplitudes of deflection,bending moment and shear force decrease continuously.The effect of load frequency on the dynamic response of pavement is similar to that of load velocity.Furthermore,when the center of traffic load approaches the end of pavement in the transverse direction,the dynamic response increases slightly at first and then rapidly reduces in the end.
万方数据
维普
