On the Design Theory and Method of Continuously Reinforced Concrete Pavement(CRCP)

Continuously reinforced concrete pavement (CRCP) is one of high performance concrete pavement structures. A systematic analysis on CRCP design principles is conducted. In the vehicle load stress analysis, the orthogonal anisotropic membrane model is established by treating the longitudinal bars as continuum, and three dimensional finite element analysis is carried out with considering transverse crack. Two critical load positions are found out. In thermal stress analysis, the calculation model and equilibrium differential equations are established on the basis of researching the bond slip constitutive relation between the reinforced bars and concrete. The analytic solution is derived to calculate the stress and displacement under the temperature drop and concrete shrinkage. The parameter's sensitivity and stress relaxation caused by concrete creep are analyzed. Using numerical methods and analytic methods, the anchor force at CRCP ends is calculated, and the displacement and stress of trech lugs are analyzed, the design parameters are recommended and the design nomograms are provided. The indoor model test is carried out to verify the theoretical values. The method for designing CRCP slab thickness, reinforcement and end structure is provided.