Dynamic Time Domain Backcalculation of LTPP Test Sites
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概要
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A time domain backcalculation program is developed, and it is used to predict the response of the FWD test from LTPP test sections. The advantage of a time domain analysis is that it can use the time history data directly and is less affected by the error data. The Newmark scheme is used for the time integration, and the pattern search approach of optimization is adopted to perform the backcalculation. First, the backcalculations based on the synthetic data generated by the finite element program show a good agreement between the predicted and given material properties. Then, the backcalculation is performed to analyze the FWD data from the LTPP database; the difference between the predicted and measured data is small. Finally, the backcalculation properties are used to predict the dynamic response of the FWD test in which the deflection data was not used for backcalculation analysis; the results show that the predictions and the test results agree very well.
- Eastern Asia Society for Transportation Studiesの論文
Eastern Asia Society for Transportation Studies | 論文
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