WARPING STRESS EQUATION AT THE TRANSVERSE JOINT EDGE OF CONCRETE PAVEMENT SLAB BASED ON FEM ANALYSIS

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  • FEM解析に基づくコンクリート舗装版横目地のそり応力式

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In the design of concrete pavement, warping stresses caused by temperature differences of concrete slab should be calculated at the transverse joint edge. However, any such an equation has been not developed in the past. Accordingly, the authors developed a warping stress equation based on the stress analysis by finite element method (FEM). In this FEM analysis, concrete pavement and its transverse joint were expressed by means of a thin plate-Winkler foundation model and a spring joint model, respectively. Multi-regression analysis was applied to the results of the FEM numerical calculations, and consequently, a warping stress equation was obtained. After the comparison between calculated results of the proposed equation and the warping stress equations developed in the past, it was confirmed that the equation was valid and practical.

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