| Summary: | 碩士 === 國立成功大學 === 土木工程學系碩博士班 === 96 === To investigate the dynamic response to moving vehicles, a rigid infinite plate on Kelvin foundation subjected to moving load is used to model the pavement. A special case as Winkler foundation when damping ratio equals to zero is considered in this study ,too. Governing equation is derived by using integral transform method. Double Fourier transform and Laplace transform are used to make the governing equation easily to solve.
To calculate the value of deflection equation, an numerical integral method with two dimensional trapezoid rule is used to solve the indefinite integral problem in this study. The convergence and precision of the numerical method are also discussed. The effect of the coefficients of pavement and foundation to the response of the plate is analysed. The effect of moving load under different velocity ratio and foundation with different damping ratio to pavement plate response is concerned, too. As the result, maximum deflection of plate will occur under the center of the applied load when damping is not considered. If damping is included into considering, the effect of distance lag will be excited by the velocity of moving load. Finally, a figure of pavement coefficients versus the response of the plate with dimensionless analysis is established.
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