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http://dx.doi.org/10.12989/sem.2014.52.4.829

Theoretical analysis of overlay resisting crack propagation in old cement concrete pavement  

Pan, Baofeng (Faculty of Infrastructure Engineering, Dalian University of technology)
Gao, Yuanyuan (College of Civil Engineering and Mechanics, Yan Shan University)
Zhong, Yang (Faculty of Infrastructure Engineering, Dalian University of technology)
Publication Information
Structural Engineering and Mechanics / v.52, no.4, 2014 , pp. 829-841 More about this Journal
Abstract
The main purpose of this study is to determine the effect of overlay on the crack propagation. In order to simplify the problem, a cement concrete pavement is modeled as an elastic plate on Winkler foundation. To derive the singular integral equations, the Fourier transform and dislocation density function are used. Lobatto-Chebyshev integration formula, as a numerical method, is used to solve the singular integral equations. The numerical solution of stress intensity factor at the crack tip is derived. In order to examine the effect of overlay for resisting crack propagation, numerical analyses are carried out for a cement concrete pavement with an embedded crack and a concrete pavement with an asphalt overlay. Results show the significant factors that influence the crack propagation.
Keywords
fourier transform; dislocation density function; singular integral equation; stress intensity factor; overlay;
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