表面波を用いた舗装構造診断への理論的アプローチ

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  • THEORETICAL APPROACH TO STRUCTURAL EVALUATION OF PAVEMENT BY SURFACE WAVE METHOD

説明

Research on SASW (Spectral analysis of surface wave) has been well known as one of nondestructive testing methods for pavements, which has been extensively conducted at University of Texas since 1980. This method makes use of the dispersion characteristics to estimate pavement structure. However, the area of research in our country is almost nothing. Fundamental research on the surface wave test is presented in this paper.<BR>The objective of this research is to compare four numerical methods to compute phase velocity of layer systems, to examine dispersion characteristics of two layer systems exchanging the layer stiffnesses. and to find the effects of the layer thickness and the stiffness ratio of two layers on dispersion curves.

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