Mechanical response analysis on cement concrete pavement structure considering interlayer slip

Document Type

Article

Publication Date

7-1-2023

Department

Department of Civil, Environmental, and Geospatial Engineering

Abstract

To quickly analyze the response characteristics of cement concrete pavement structures, the pavement structure was simplified as a double layer Euler beam on the Winkler foundation. Based on the Euler-Bernoulli beam theory and state-space method, an analytical calculation method for the mechanical response of cement concrete pavement structures considering the interlaminar interface shear slip effect was presented. The correctness of the proposed analytical method was verified by comparing with the numerical results of finite element calculation. In addition, the deformation response of cement concrete pavement structure under the influence of different length of pavement structure and interlayer shear stiffness, and the influence of load on the shear force concentration at the interface were also revealed. The results indicate that different pavement structure lengths for the calculation have a significant influence on the deformation response, and it is recommended that the length should not be less than 10 m. The interlaminar interface shear slip effect can significantly affect the vertical displacement and bending deformation of the cement concrete pavement structure, and the effect will become more and more significant with the increase of the load, which could not be ignored. The increase of interlayer shear stiffness can effectively reduce the influence of load on the deformation response of cement concrete pavement structure.

Publication Title

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition)

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