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Structural Engineering and Mechanics Volume 52, Number 4, November25 2014 , pages 829-841 DOI: https://doi.org/10.12989/sem.2014.52.4.829 |
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Theoretical analysis of overlay resisting crack propagation in old cement concrete pavement |
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Baofeng Pan, Yuanyuan Gao and Yang Zhong
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| 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. | ||
| Key Words | ||
| fourier transform; dislocation density function; singular integral equation; stress intensity factor; overlay | ||
| Address | ||
| Baofeng Pan and Yang Zhong: Faculty of Infrastructure Engineering, Dalian University of technology, Dalian Liaoning 116024, China Yuanyuan Gao: College of Civil Engineering and Mechanics, Yan Shan University, Qinhuangdao Hebei 066004, China | ||