1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an Shaanxi 710064, China;
2. College of Engineering, Zhejiang Normal University, Jinhua Zhejiang 321004, China
Study on Damping Characteristic Parameters and Dynamic Deflection Distribution of Asphalt Pavements
YOU Qing-long1, QIU Xin2, YANG Qing2
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an Shaanxi 710064, China;
2. College of Engineering, Zhejiang Normal University, Jinhua Zhejiang 321004, China
摘要To attain the data of effective dynamic deflection basin utilized to implement modulus backcalculation of asphalt pavement, by dynamic finite element method, the solution method of damping coefficients of pavement structural layers is discussed, the estimation model of subgrade damping coefficients is established, and the influence of testing loading's dynamic effect and discontinuous contact behavior between structural layers on distribution features of surface dynamic deflection basin is investigated. The results demonstrate that (1) subgrade damping coefficient is a main factor affecting surface dynamic deflection distribution, which is mainly controlled by subgrade modulus, while influence of other structural parameters on subgrade damping coefficients is negligible; (2) when the asphalt pavement is imposed by static and dynamic loadings, the distribution features of dynamic deflection basin has a dynamic deflection basin for the same asphalt pavement; (3) performing back calculation of modulus parameters of structural layers should consider the actual FWD loading characteristics and the interface contact behaviors.
Abstract：To attain the data of effective dynamic deflection basin utilized to implement modulus backcalculation of asphalt pavement, by dynamic finite element method, the solution method of damping coefficients of pavement structural layers is discussed, the estimation model of subgrade damping coefficients is established, and the influence of testing loading's dynamic effect and discontinuous contact behavior between structural layers on distribution features of surface dynamic deflection basin is investigated. The results demonstrate that (1) subgrade damping coefficient is a main factor affecting surface dynamic deflection distribution, which is mainly controlled by subgrade modulus, while influence of other structural parameters on subgrade damping coefficients is negligible; (2) when the asphalt pavement is imposed by static and dynamic loadings, the distribution features of dynamic deflection basin has a dynamic deflection basin for the same asphalt pavement; (3) performing back calculation of modulus parameters of structural layers should consider the actual FWD loading characteristics and the interface contact behaviors.
基金资助:Supported by the Natural Science Foundation of Zhejiang Province of China (No.LY12E08002);the Public Technology Research Projects of Zhejiang Province Technology Hall (No.2013C33023)
通讯作者:
YOU Qing-long, youqinglong0730@163.com
E-mail: youqinglong0730@163.com
引用本文:
游庆龙, 邱欣, 杨青. 沥青路面阻尼特征参数及路表动态弯沉盆分布特征研究[J]. Journal of Highway and Transportation Research and Development, 2014, 8(2): 1-6.
YOU Qing-long, QIU Xin, YANG Qing. Study on Damping Characteristic Parameters and Dynamic Deflection Distribution of Asphalt Pavements. Journal of Highway and Transportation Research and Development, 2014, 8(2): 1-6.
[1] MASON M. Guide for Mechanistic-empirical Design of New and Rehabilitated Pavement Structures, NCHRP 1-37A[R]. Washington, D. C.:Transportation Research Board, 2004.
[2] WEI Cui-ling, WANG Fu-ming, ZHOU Jing. Dynamic Analysis of FWD Nondestructive Test Data[J]. Chinese Journal of Geotechnical Engineering,1999, 21(4):495-497. (in Chinese)
[3] DAVIES T G, MAMLOUK M S. Theoretical Response of Multilayer Pavement Systems to Dynamic Nondestructive Testing[J]. Journal of the Transportation Research Board, 1985, 1022:1-7.
[4] ROESSET J M, SHAO K Y. Dynamic Interpretation of Dynaflect and Falling Weight Deflectometer Tests[J]. Journal of the Transportation Research Board, 1985, 1022:7-16.
[5] SEBAALY B E, MAMLOUK M S, DAVIES T G. Dynamic Analysis of Falling Weight Deflectometer Data[J]. Transportation Research Record, 1986, 1070:63-68.
[6] CHANG D W, KANG Y V, ROESSET J M, et al. Effect of Depth to Bedrock on Deflection Basins Obtained with Dynaflect and Falling Weight Deflectometer Tests[J]. Journal of the Transportation Research Board, 1992, 1355:8-16.
[7] NAZARIAN S, BODDAPATI K M. Pavement-Falling Weight Deflectometer Interaction Using Dynamic Finite-Element Analysis[J]. Journal of the Transportation Research Board, 1995, 1482:33-43.
[8] LEE Y C, KIM Y R, RANJI S. A Dynamic Analysis-Based Approach to Determine Flexible Pavement Layer Moduli Using Deflection Basin Parameters[J]. Journal of the Transportation Research Board, 1998, 1639:36-42.
[9] HAO Da-li. Evaluation and Analysis on Pavement Performance[D]. Xi'an:Chang'an University, 2006. (in Chinese)
[10] LIANG Xin-zheng, WANG Fu-ming, KONG Xian-jing. Analysis for Result of Subgrade Modulus Backcalculation[J].Chinese Journal of Geotechnical Engineering, 2000, 22(5):619-621. (in Chinese)
[11] QIU Xin, LING Jian-ming, FANG He, et al. Mechanism Analysis of Damping Effect on Dynamic Deflection of Asphalt Pavement[J]. Mechanics in Engineering, 2008, 30(6):51-55. (in Chinese)
[12] QIU Xin, YOU Qing-long, YANG Qing. Distribution Characteristics of Surface Dynamic Deflection Basin of CTB Asphalt Pavement with Cracking[J]. Journal of Highway and Transportation Research and Development, 2013, 30(2):1-8. (in Chinese)
[1]
李宁, 马骉, 李瑞, 司伟. 基于PUMA的单级和多级加载模式下级配碎石性能研究[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 1-12.
[2]
许海亮, 任合欢, 何兆才, 何炼. 车路耦合条件下沥青混凝土路面变形特性时域分析[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 13-19.
[3]
杜健欢, 艾长发, 黄超, 郭玉金, 蒋运兵. 界面水对沥青复合小梁疲劳性能的影响试验[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 1-7.
[4]
姚国强, 言志信, 龙哲, 翟聚云. 基于岩质边坡相似材料的锚固界面剪应力分布规律研究[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 8-15.
[5]
刘泽, 何矾, 黄天棋, 蒋梅东. 车辆荷载在挡土墙上引起的附加土压力研究[J]. Journal of Highway and Transportation Research and Development, 2019, 13(1): 16-23.
[6]
邱欣, 徐静娴, 陶钰强, 杨青. 路面结冰条件判别标准及SVM预测分析研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(4): 1-9.
[7]
高伟, 崔巍, 李秀凤. 半刚性基层表面抗冲刷性能试验与分析[J]. Journal of Highway and Transportation Research and Development, 2018, 12(4): 10-17.
[8]
张向东, 任昆. 煤渣改良土路基的动弹性模量及临界动应力试验研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(4): 25-32.
[9]
刘栋, 尚小亮, 杨西海. 垃圾焚烧炉渣中可溶盐对水泥稳定材料性能的影响[J]. Journal of Highway and Transportation Research and Development, 2018, 12(4): 18-24.
[10]
李龙海, 杨茹. 多次加铺的复合道面疲劳寿命分析[J]. Journal of Highway and Transportation Research and Development, 2018, 12(3): 7-15.
[11]
蔡旭, 李翔, 吴旷怀, 黄文柯. 基于旋转压实的水泥稳定再生集料设计方法研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(3): 1-6.
[12]
李金路, 冯子强, 吴佳杰, 魏姗姗, 葛智. 环境及疲劳荷载作用下碳纳米管水泥基复合材料压敏性能研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(3): 16-21.
[13]
田小革, 韩海峰, 李新伟, 吴栋, 魏东. 半刚性路面中双层半刚性基层的倒装效应[J]. Journal of Highway and Transportation Research and Development, 2018, 12(3): 22-27.
[14]
邢磊, 雷柏龄, 陈忠达, 戴学臻. 彩色沥青路面胶凝材料的制备技术[J]. Journal of Highway and Transportation Research and Development, 2018, 12(2): 1-6.
[15]
方薇, 陈向阳, 杨果林. 带齿格栅加筋挡墙工作机理的数值模拟研究[J]. Journal of Highway and Transportation Research and Development, 2018, 12(2): 7-13.
2014, Vol. 8 
