CD Tesis
Evaluasi Struktur Perkerasan Lentur Dengan Metode Empiris Dan Mekanistik-Empiris
The evaluation stage of the old pavement is very important for road rehabilitation decision making. Empirical methods such as AASHTO 93 have become a long-term reference used in Indonesia. necessary to compare the suitability of the empirical design with the mechanistic-empirical which can predict the damage model based on the analysis of the loading of the wheels and the quality of the material. This study aims to determine the condition of the old pavement through repetition of standard axle loads to experience fatigue cracks and rutting, determine the need for thick layers of overlay empirical methods (AASHTO 93) and mechanistic-empirical (KENPAVE Computer Program), and the influence of variations subgrade resilient modulus to the response of the pavement structure. The road studied is the Kubang Raya-Simpang-Panam road section. The pavement structure consists of a surface layer with a thickness of 10 cm which is analyzed by viscoelastic modeling, a top layer of foundation 20 cm, a foundation below 30 cm which is assumed to be a subgrade layer with a thickness reviewed to a depth of 1 m from the surface analyzed by modeling non-linear elastic divided into 3 segments according to deflection data < 30 %. The research begins with processing deflection data obtained from field investigations with the Falling Weight Deflectometer, the output of the backcalculation process with the AASHTO 93 formula and ELMOD software in the form of subgrade resilient modulus and modulus of elasticity which are used for overlay analysis of both methods. The axle load equivalent traffic data were analyzed using the AASHTO 93 method and used for the analysis of both methods. From the analysis, it was found that the old pavement was damaged in the initial year of planning as seen from the structural number effective and the repetition value that was able to be held below the existing traffic requirements. The value of adding a pavement layer using the KENPAVE Computer Program is 18 cm, 33 cm, 10 cm compared to 17 cm, 24.9 cm, 14.70 cm cm, the AASHTO method 93 or it is stated that the added layer of pavement with the mechanistic-empirical method is thicker than the empirical method. For the option of optimizing the addition of added pavement layers, improvement of the resilient modulus of subgrade can be done which can be seen in the smaller strain trend when the modulus of the subgrade is greater
Keywords : Backcalculation, AASHTO 93, KENPAVE, Mechanistic-Empirical, Modulus Resilient.
Tidak tersedia versi lain