关键词: 道路工程, 半刚性沥青路面, 有限元分析, 温度场, 耦合场

Abstract: Based on the serious problems of rutting and transverse cracks on semi-rigid asphalt pavement in Turpan, the analysis on the mechanical response of the semi-rigid asphalt pavement in coupling field was carried out. The three-dimensional finite element model of semi-rigid asphalt was established by ANSYS finite element software. The temperature load such as solar radiation heat was applied and the vehicle load was also applied at the same time. The mechanical response of Turpan semi-rigid asphalt pavement in coupling field was researched, which was aimed to provide some suggestions for designation of semi-rigid base asphalt pavement structure in Turpan. Analysis results show that the thickness of asphalt layer has a significant impact on the shear stress of the asphalt layer and tensile stress of the semi- rigid basement, and it is suggested that the asphalt layer thickness value in Turpan is 16cm~18cm; the maximum shear stress of the asphalt layer and the maximum tensile stress of the semi-rigid basement occur in the range of 7~13 o’clock, which are increased by 4.5% and 5.8% respectively.

Key words: highway engineering, semi-rigid asphalt pavement, the finite element analysis, temperature field, coupling field