Structural Evaluation of Pavement by Backcalculation

机译：通过反算计算路面结构

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A new method of structural evaluation (W-BALM) has been developed using the histories of impulsive force and surface deflections measured by falling weight deflectometers (FWD). It is assumed that pavement is composed of a multilayered half-space with Voigt type material characteristics. Surface deflections are obtained by analytically solving a wave propagation problem using Hankel transformation and fast Fourier transform (FFT). Voigt model parameters of pavement layers are determined such that computed surface deflections coincide with measured by using the Gauss-Newton method. The results are compared with those from BALM (static Back Analysis for Layer Moduli) and those from D-BALM (Dynamic Back Analysis for Layer Moduli). It is found that W-BALM and D-BALM yield similar results but differ from the results of BALM.

机译：已经开发了一种新的结构评估方法（W-BALM），该方法使用了落锤重量计（FWD）测得的冲击力和表面变形的历史记录。假定路面由具有Voigt型材料特性的多层半空间组成。通过使用Hankel变换和快速傅里叶变换（FFT）解析地解决波传播问题，可以获得表面挠度。确定路面层的Voigt模型参数，以使计算出的表面挠度与使用高斯-牛顿法测得的值一致。将结果与BALM（针对层模量的静态反向分析）和D-BALM（针对层模量的动态反向分析）的结果进行比较。发现W-BALM和D-BALM产生相似的结果，但与BALM的结果不同。

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来源
《Proceedings of 5th China-Japan workshop on pavement technologies》|2009年|p.260-264|共5页
会议地点 Xian(CN);Xian(CN)
作者
MATSUI Kunihito; OZAWA Yoshiaki; HIGASHI Shigeo;
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作者单位

College of Science and Engineering,Tokyo Denki University,Japan,350-0394;

Century Techno Inc.Japan,103-0001;

Research Institute,Kajima Road Co.Ltd,Japan,182-0036;

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会议组织
原文格式 PDF
正文语种 eng
中图分类路基、路面工程;
关键词
Backcalculation; FWD; Hankel transformation; FFT; Multilayered half-space; Voigt model; Wave propagation;

机译：反算; FWD; Hankel变换; FFT;多层半空间; Voigt模型;波传播;

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Structural Evaluation of Pavement by Backcalculation

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