Calculation And Analysis Of Statocs And Dynamics In Continuously Reinforced Concrete Pavement

Continuously reinforced concrete pavement (CRCP) is a kind of concrete pavement in which the longitudinal reinforcing steel is continuous throughout its length and has no intermediate transverse expansion or contraction joints. CRCP has many advantages, such as higher strength of whole pavement, longer service life, better riding quality, less maintenance work and so on. It had been widely used for the main line of highway and airport pavement in the United States and European countries. Some preliminary application has also been done in our country. But the theoretical study and construction technology is not perfect, especially, dynamic analysis of CRCP subjected to moving loads has not been discussed. static and dynamic behaviors of CRCP under traffic loads is systematically Studied by the theoretical analysis and measurement of experimental road in the thesis. The thesis is an important part of the scientific project?The Research of Design Theory and method for CRCP?(No.59778047)sponsored by national natural science fi.inds.Based on the theory of composite materials and the structural characteristics of CRCP, CRCP is treated as though laminated composite plates. The engineering elastic constants of CRCP are elaborated, and the governing differential equations of both symmetric reinforced plate and unsymmetrical reinforced plate are all established for the analysis of static and dynamic behaviors in CRCP. The static solution for displacements and stresses of CRCP with unsymmetrical reinforced in tow dimension and simply supported edges is obtained by using triangular series and Fourier transformation. The general solution for the symmetric reinforced pavement under partial vertical load derived by means of the method of dividing piece and superposition.The reliability and reasonableness of the solutions are discussed through analytic degeration and finite element methods. The influence laws of reinforced ratio reinforced position and foundation coefficient on the deformation are studied with numerical analyses.According to orthotropic plate theory, dynamic Reponses of CRCP subjected to moving load is achieved by using constant wave method and integral transformation. On account of the energy wastage in foundation deformation, dynamic responses of CRCP on viscoelastic foundation under transient and moving load are analysed by making use of viscoelasticity and the formulae are presented to research the behaviors of CRCP. The effects of transient load period, moving load speed and foundationcoefficient on dynamic responses are discussed and they are compared with the results under static load. The dynamic property of vehicle-pavement interactions is investigated in actual datum on pavement rougbness~ vehicle speed and Some other parameters of vehicle. Lastly, the theoretical analysis correctness and calculation reasonableness are fwther verified on the basis of actual measuring results of CRCP experiment road, Every solution in the thesis are translated into computer programme and can been conveniently applied in practice. Which puts forward some theoretical bases for the design and assessment of CRCP.