Effect of Spacing of Tandem Axle Load on the Dynamic Response of Rigid Pavement Resting on Pasternak Foundation
摘要
This paper presents the effect of tandem axle load on the dynamic response of rigid pavement incorporating dowel bars resting on an elastic foundation. A finite element method-based analytical solution algorithm, developed in FORTRAN 90/95, is used for this analysis. Finite beam elements are used to discretize the concrete pavement. The two-parameter Pasternak foundation model is used to model the underlying soil. The Newmark-Beta integration method is used to solve the dynamic equilibrium equation. The results obtained from the proposed algorithm have been compared with those in the existing literature, and a good agreement was found between them. The effect of the spacing of tandem axle load with varying parameters, such as modulus of subgrade reaction and shear modulus of soil with defined pavement thickness, is evaluated and compared. The velocity of the load is varied, and the corresponding critical velocity and maximum deflection are evaluated.