DYNAMIC EFFECT OF MOVING LOAD ON ASPHALT PAVEMENT

Jozef Melcer, Gabriela Lajčáková

Last modified: 2017-02-28

Abstract


The roads represent the transport structures subjected to intensive dynamic effect of moving vehicles. The knowledge of the development of the strain and stress states in time is needed during the solution of various engineering tasks. One possibility how to obtain such information is to utilize the possibilities of numerical simulation methods of real processes. This advance demands the creation of vehicle computing models and pavement computing models. In this contribution the pavement computing model created on the theory of endless beam on elastic foundation is introduced. The equations of motion are derived in the form of differential equations. The equations of motion are solved numerically in the environment of program system MATLAV. The results following the influence of various parameters (speed of vehicle motion, stiffness of subgrade, modulus of elasticity) on the values of pavement vertical deflections and the values of contact forces are introduced. Some results obtained by numerical way can be confronted with the results of experimental tests. The outputs from numerical solution in time domain can be transformed into frequency domain and subsequently employ for the solution of another tasks, for example analysis of noise situation or technical seismicity induced by transport.

Keywords


dynamics, moving load, asphalt pavement, numerical solution

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