带裂缝CTB沥青路面路表动态弯沉盆分布特征

doi:10.3969/j.issn.1002-0268.2013.02.001

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Abstract The objective of this study was to discuss the distribution features of dynamic deflection basins of distressed asphalt pavements using the dynamic finite element method. Based on the results obtained by systematic analysis, the criteria used to filter the effective data of falling weight deflectometer (FWD) deflection basins were presented and also verified by in-situ project study. The results demonstrate that the crack width of 0.2 mm is a critical value to determine the existence of contact behavior between crack contact surfaces. The distribution characteristics of dynamic deflection basins display a tremendous difference between intact and cracked pavements. The established criteria, involving surface deflection and surface modulus indicators, are verified to be reasonable and viable for filtering the FWD testing technology.

Key words： road engineering asphalt pavement FWD dynamic deflection basin numerical analysis

Received: 12 January 2013

Fund:Supported by the Natural Science Foundation of Zhejiang Province of China (No.LY12E08002);and the Science Technology Department of Zhejiang of China (No.2013C33023)

Corresponding Authors: QIU Xin, xqiu@zjnu.cn E-mail: xqiu@zjnu.cn

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	QIU Xin
	YOU Qing-long
	YANG Qing

Cite this article:

QIU Xin,YOU Qing-long,YANG Qing. Distribution Characteristics of Dynamic Deflection Basins of Distressed Asphalt Pavements[J]. Journal of Highway and Transportation Research and Development, 2013, 7(4): 1-8.

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http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/10.3969/j.issn.1002-0268.2013.02.001 OR http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/Y2013/V7/I4/1

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