@inproceedings{0cffabeaba044363bd4f8541a352cc63,
title = "A new dynamic method for FWD inverse analysis and its application in CRCP pavement",
abstract = "A new method in the article is presented to predict the pavement layer moduli using field measurements of Falling Weight Deflectometer (FWD). To improve the computational efficiency of the layer-condition assessment, one type of spectral element is proposed to develop the dynamic analysis of 3D multi-layered system subjected to an impulsive load. Each layer in the structure is simulated as two-noded layer spectral element or one-noded spectral element in the frequency domain. In order to identify the parameters of layered structures, a nonlinear optimization method called Powell hybrid algorithm is employed. The optimization procedure is performed in the frequency domain and aims at minimizing the discrepancy of the measured and calculated transfer function. In the case of the inverse calculation, it was verified that the Powell's algorithm had obtained stable and efficient convergences at the angle frequencies ranging from 10 Hz to 80 Hz. The new dynamic method was applied in the Continuously Reinforced Concrete Pavement(CRCP) project which has four layers. Compared with static method, it proved that the inversed-analytical results of the new dynamic method is more accurate and stable.",
author = "Wu, {Chun Ying} and Liu, {Xue Yan} and A. Scarpas and Ge, {Xiu Run}",
year = "2007",
language = "British English",
isbn = "9780415448802",
series = "Advanced Characterisation of Pavement and Soil Engineering Materials - Proceedings of the International Conference on Advanced Characterisation of Pavement and Soil Engineering Materials",
pages = "939--947",
booktitle = "Advanced Characterisation of Pavement and Soil Engineering Materials - Proceedings of the International Conference on Advanced Characterisation of Pavement and Soil Engineering Materials",
note = "International Conference on Advanced Characterisation of Pavement and Soil Engineering Materials ; Conference date: 20-06-2007 Through 22-06-2007",
}