1. College of Engineering, Zhejiang Normal University, Jinhua Zhejiang 321004, China;
2. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an Shaanxi 710064, China
Distribution Characteristics of Dynamic Deflection Basins of Distressed Asphalt Pavements
QIU Xin1, YOU Qing-long2, YANG Qing1
1. College of Engineering, Zhejiang Normal University, Jinhua Zhejiang 321004, China;
2. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an Shaanxi 710064, China
摘要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.
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.
基金资助:Supported by the Natural Science Foundation of Zhejiang Province of China (No.LY12E08002);and the Science Technology Department of Zhejiang of China (No.2013C33023)
通讯作者:
QIU Xin, xqiu@zjnu.cn
E-mail: xqiu@zjnu.cn
引用本文:
邱欣, 游庆龙, 杨青. 带裂缝CTB沥青路面路表动态弯沉盆分布特征[J]. Journal of Highway and Transportation Research and Development, 2013, 7(4): 1-8.
QIU Xin, YOU Qing-long, YANG Qing. Distribution Characteristics of Dynamic Deflection Basins of Distressed Asphalt Pavements. Journal of Highway and Transportation Research and Development, 2013, 7(4): 1-8.
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2013, Vol. 7 
