淡江大學機構典藏:Item 987654321/44905
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    题名: Dynamic Interpretation for Impulsive Deflection Test on Flexible Pavements
    作者: Chang, Der-wen;Chang, Chia-ling
    贡献者: 淡江大學土木工程學系
    关键词: Impulsive tests;Deflection;Dynamic analysis;Data interpretation;Pavement
    日期: 1998-06
    上传时间: 2013-03-12 11:14:31 (UTC+8)
    出版者: 臺北市:中華民國力學學會
    摘要: In this study, a computer program DBFWD is developed for data analysis of Falling Weight Deflectometer (FWD) test on flexible pavements. To backcalculate the layer moduli of the pavement, a number of iterative backcalculation schemes were employed with the forward analysis of the Green's flexibility influence functions. The temperature and the moisture influences on material moduli of the asphalt surface and the subgrade soils were considered in the analysis. As the result, the iterative scheme based on the peak deflection ratios was selected to backcalculate the layer moduli of local pavements. Owing to the correction procedure used in the program, interpretations with four original deflections were found more accurate than those with equivalent number of modified deflections. Comparisons of program DBFWD with other static backcalculation programs on theoretical and experimental deflections indicated that dynamic interpretation is more effective in providing the layer modulus information. Despite of the requirements of accurate inputs of the layer thickness and the testing load for the analysis, a generalized application of the program needs to be clarified with model road test in demand.
    關聯: 力學=The Chinese Journal of Mechanics Series A 14(2),頁91-100
    DOI: 10.1017/S1727719100000113
    显示于类别:[土木工程學系暨研究所] 期刊論文

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