Thermal Stress Analysis of Concrete Base of Durable Asphalt Pavement

Abstract:

In order to study the influence of some factors on the thermal stress of concrete base of durable asphalt pavement, the thermal field of the pavement structure was analyzed and the thermal stress of cement concrete base was calculated on the basis of threedimensional finite element model.The calculation parameters were determined and the parameter combination was arranged with orthogonality design method. The maximum difference and variance of the calculation results were analyzed. Besides, the thermal stress of concrete base was calculated with arranging parameter combination through uniform design table,and the thermal stress calculation formula was obtained through calculation results regression.

Key words:road engineering; durable asphalt pavement; concrete base; orthogonality design; uniform design; thermal stress calculation formula