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Key Words: accelerated vehicle simulator, stress and strain, FWD, back calculation, pavement performance

A BASIC STUDY ON THE PAVEMENT BEHAVIORS UNDER THE DIFFERENT TYPES OF LOADS, USING ACCELERATED VEHICLE SIMULATOR

Shigeo HIGASHI,Kazuaki KAMIYA,Ken TOMISAWA,Toshihiro KANAI,Kunihito MATSUI

In the theoretical design procedures, stresses and strains in a pavement should be made clear. Therefore, we carried out the moving load tests on a trial-paving yard, using accelerated vehicle simulator. From a result of our study, the following conclusions were obtained, a) The deeper the position was in the pavement, the wider measured stress was distributed. b) The stress and strain under the moving load were very similar to those under the FWD load. However, the stress and strain of the static load were greater than those of the moving and FWD loads. c) Fatigue in the sub-grade was caused by repeated moving loads. But, the degree of fatigue was not captured by the deflection D0 of FWD load.