Abstract:In order to determine the pavement structure applicable to the roads in the central area of Gansu International Land Port, five typical pavement structure combinations are determined according to the local climate and pavement types. The pavement performances are characterized by the parameters such as road surface deflection, bottom tensile stress of the semi-rigid base layer, permanent deformation of the asphalt layer, low-temperature cracking index, fatigue life of the semi-rigid base layer, and pavement cost. Five typical pavement structures are comprehensively evaluated by fuzzy mathematics. The results show that the deflection value of pavement structure III is the smallest, the overall strength of the pavement is better. The bottom tensile stress of subbase layer of structure I is the minimum, and the cracking resistance of base layer is the best. The fatigue life of subbase layer of structure I is the greatest with higher anti-fatigue performance. Structure IV has the lowest cost and better economy. The comprehensive evaluation shows that the comprehensive performance of the structure V is the best, and the comprehensive evaluation result is 0.95. According to the climatic environment and traffic characteristics of the roads in the central area of Gansu International Land Port, the pavement structure most suitable for this area is the structure V.