| Continuously Reinforced Concrete Pavement (CRCP) is one of high performance pavement structure with enough continuously steel bars in the longitudinal direction. With the exclusion of transverse expansion or contraction joints of Portland Concrete Pavement, CRCP has more advantages including better riding quality, higher bearing capacity, longer service life and less maintenance work. CRCP accords with the trend of highway transportation of containerization, heavy load and large traffic volume, and it has a vast application in high-grade highways in the future. This paper is an important part of the scientific project ~search of design theory and method for CRCP?(authorized number: 59778047) sponsored by national natural science funds. In the CRCP design principles, the author conducts- a comprehensive analysis of load stress, thermal stress, anchor end structure and pavement reliability. The construction techniques are studied on the base of building test roads, the following long-term observation and field tests.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 analyses is carried out with the consideration transverse crack. Through a great deal of calculation for different load position, two critical load positions are found out under the different length of transverse crack spacing - the central part in longitudinal joint and in the transverse crack of one side. Base on the sensitivity analysis of parameters, the relation of crack spacing, steel percentage and its location is studied. The different response of displacement and stress between CRCP and JCCP is compared and analyzed with the purposes of proper design for slab thickness.According to the bond-slip constitutive relation between the reinforced bar and concrete and the linear calculation model between the subgrade and concrete, the equilibrium differential equations are established for the analysis of the thermal stress in CRCP. The analytic solution is derived and the formula is provided to calculate the CRCP stress and displacement at critical position under the temperature drop and shrinkage. Through the numerical analysis, the relation between the internal stress and the external performance such as transverse crack spacing and width is discussed when the steel percentage is changed. Based on the creep expression of concrete, the formulas are presented to calculate the thermal and shrinkage relaxation stress on considerations of the linear or sine annual temperature variation by direct integration. The relaxation-modified coefficient is present to revise the elastic stress in CRCP.In terms of the different models of the friction force from the subgrade, the anchor force at CRCP ends is calculated using the analytical method and section interative method. The displacement and stress in trench lugs are analyzed by FEM and matrix displacement method. Though the sensitive analysis for parameters, thedesign values are recommended and a nomogram for displacement, design moment of lugs and pavement slab is provided. The indoor model test using organic glass is carried out and the displacement, stress, earth pressure as well as its distribution type are measured to verify the theoretical values.The crack spacing of CRCP changes randomly and has a significant impact on the pavement durability and performance. The direct integration method is used to analyze the reliability for crack spacing and width. The results show that the main factors that affected the reliability are the design crack spacing and the variability of parameters. This paper presents a nomogram for reliability calculation.Though building the CRCP test road, the key technique ?reinforcement installation is studied and solved successfully. The construction procedure, quality requirements and temperature control measures are presented. The field performance of CRCP is studied and evaluated through long-term observation, surveys and field...
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