Influence of Void to Load Stresses of Rigid Airport Pavement

Abstract:

Through the establishment of ABAQUS 3D-FEM model， the contrast between test deflection basin curve and calculate deflection basin curve, a more precise method is proposed to calculate void parameters. It analyses the influence of all kinds of void to loading stresses of airport cement concrete pavement. The result shows that in finite element software calculation pavement deflection, the replacement of pulse load by static load has little effect on the calculation results, the subgrade of void region is not completely divorced from the surface, and its response modulus has certain discount from original value, influence of void to loading stresses of airport cement concrete pavement reaches 80%.