2017 International Conference on Transportation Infrastructure and Materials (ICTIM 2017) ISBN: 978-1-60595-442-4 Dynamic Analysis of Rigid Pavement Resting on two Parametric Foundation Naveen Kumar Kedia 1 and Sanjeev Kumar Suman 2 1 M.Tech (Transportation Engineering, NIT PATNA), naveen.kedia@outlook.com 2 Assistant Professor (Civil Engineering Department, NIT PATNA), sksuman@nitp.ac.in ABSTRACT: In our present work we have considered the effect of time varying sinusoidal load generated through the quarter truck model moving with the constant velocity on the rigid pavement. The effect in the terms of deflection generated on the pavement is considered on the two and one parameter model for both dynamic and the static case and the results are compared. The finite element procedure is applied for the dynamic analysis of the rigid pavement in which the pavement is represented as finite beam elements of different lengths. The underlying soil medium is represented by the Pasternak model in which soft subgrade soil is modeled by the spring and Dashpot elements and the base course is modeled by the shear layer. The trapezoidal method is used for the solution of the dynamic equation with the help of which nodal displacements were generated. Furthermore, a time dependent response is also generated to compare the displacement with and without considering damping in the structure. Software like Mat Lab, Etabs and Sap2000 were used for the analysis purpose. The conclusion of our work is that, the maximum deflection of the pavement decreases with the increase in the subgrade modulus and thickness of the beam for same length and shear modulus value. Similarly, the maximum deflection also decreases for the same subgrade modulus, increasing shear modulus and keeping the length constant. The pavement response generated in terms of displacement for damped and un-damped case clearly showed that the displacement was more in later case. The maximum deflection generated in the dynamic case is more than the static case thus we can say that the dynamic analysis is important for the design of the pavement INTRODUCTION The core purpose of this paper is to highlight the importance of dynamic loads on the rigid pavement by comparing the displacement generated for static and dynamic conditions. To give weightage to our results pavement displacement is calculated for various combinations of length, thickness, shear modulus and subgrade modulus. The initial development in the procedure of the pavement analysis is based on the closed form solution which is obtained from the static analysis of structure of the pavement in which the pavement loads are assumed to be static and constant. However, there exist considerable differences between the static and dynamic responses generated. Engineers have been investigating the potential hazards of the dynamic load in the recent years which is now a problem of widespread practical significance. The importance of moving mass found practical application in the field of transportation, aerospace engineering, railways, bridges, etc. The majority of engineering structures are subjected to the load which vary with time and space. Increase in the traffic load and the speed of the vehicle has caused the engineer for the more detailed study of the pavement structures. The effect of dynamic load is more apparent in the case of the thin slab. The