State Between The Layers Of Composite Pavement To Analyse And Study

At present, the airport paving asphalt concrete pavement on old cement concrete road pavement become a main way of pavement reinforcement or improve the function. Due to construction factor, the mechanical parameters varies between the two materials, the road combination condition of interlayer is not the ideal state of completely continuous. Many studies have shown that the destruction of the compound pavement structure has combined with the deterioration of the situation. Therefore, how to analyze the road combination condition of interlayer about composite pavement with a state to prevent the airport early damage, formulate repairment in order to ensure safe operation of the airport is of great significance. There is no the related parameters and evaluation standard about the road combination condition of interlayer. According to the above situation, this paper has carried out the following research.Use coulomb model simulation the different combination condition of interlayer about compound pavement and with the method of numerical simulation analysis the condition of deflection deformation characteristics in different pavement structure parameters(cement concrete road face, asphalt layer thickness and material parameters, combining with the state,foundation reaction between modulus);Then through using the method of univariate analysis and multivariate analysis, using deflection basin shape index as characterization of parameters of combination condition of interlaye; Then with the methods of multivariate nonlinear regression,get the analysis model based on deflection testing deflection shape index, its reliability will be proved by direct shear test and field test.in view of combination condition of interlayer not considered in the present airport composite pavement analysis and the calculation of equivalent thickness,Deflection basin shape index is proposed as one of the indicators of composite pavement analysis model of equivalent thickness. Thus greatly improve the reliability of airport composite pavement analysis and calculation...