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Latin American applied research

versión On-line ISSN 1851-8796


GAO, Y. Theoretical analysis of overlaid cement concrete pavement with crack. Lat. Am. appl. res. [online]. 2015, vol.45, n.2, pp. 133-137. ISSN 1851-8796.

In this paper, overlaid Portland cement concrete (PCC) with crack subjected to vehicle load is considered based on theoretical analysis. In order to build efficient model, PCC is reduced to an elastic plate on Winkler foundation. Fourier integral transform, residue theorem and Lobatto-Chebyshev integration formula are used to obtain the analytical solutions on the stress and strain fields of the pavement and stress intensity factors of the crack tip. Stress intensity factors are numerically calculated. The stress intensity factors of the crack tips(b) in the pavement with 10cm thickness overlay are reduced heavily, especially for I type crack. Overlay thickness is very significant factor that effect the value of stress intensity factor of I type crack, rather than II type crack. However, stress intensity factors are less affected by elastic modulus of overlay material

Palabras llave : Cement Concrete Pavement; Crack; Pavement Overlay; Fracture Mechanics; Stress Intensity Factor.

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