Paper Details

In a developing nation like India, the construction and improvement of high quality roads plays animportant role. Highway pavement design plays an important role in the DPR projects. The satisfactory performance ofthe pavement will result in higher savings in terms of vehicle operating costs and travel time, which has a bearing on theoverall economic feasibility of the project. Stresses in concrete pavement slabs are induced by wheel loads and byvarious temperature. The intensity and nature of stresses developed at different locations of the slab are dependent uponvarious factors, viz. magnitude of load, lateral placement of wheel loads, flexural strength of slab, temperature stresses,moisture, humidity and location of joints. Excessive stresses at the bottom of the concrete slab pavement produce crack.The design of rigid pavements have followed mechanistic-empirical (M-E) principles from the beginning. In M-E designmethods, the slab thickness is determined by considering the fatigue failure of the slab due to damage cause bycumulative axel load passes. The input parameters related to sub-grade support, material characteristics, traffic loadand climate. This paper discusses about the design methods that are traditionally being followed and examines thestresses. The stresses is calculated by three methods first - as per Westergaard and Bradbury approach, Second - usingIIT-RIGID as per IRC guidelines which currently followed in field practice it is fatigue damage analysis approach. Third– By finite element method using software Ever Fe. It is observed that the stresses calculated from Westergaard is 4.85MPa, Stress calculated using IIT-Rigid is 3.13 MPa and stresses available from finite element method using SoftwareEver FE is 2.396. The analysis results shows that stresses calculated form IIT-Rigid is more conservative.

Sakhiya Arjun, Parmar Hardik, Ghava Jaydeep, Sejpal Jaydeep, “Stress Computation In Rigid Pavement”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 7, Issue 8, pp. 87-97, August 2020.