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下穿U型道路在行驶车辆作用下的动力响应

Dynamic responses of U-type road under moving vehicles
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摘要 为了解下穿U型道路在车辆荷载作用下的动力特性,通过对车辆、下穿U型道路振动系统的分析,将车-路耦合振动问题分解成两个独立的运动体系,即车辆振动子系统和道路振动子系统.利用车轮和路面的位移协调方程来考虑车路的接触,在空间整体车辆模型振动微分方程推导的基础上,考虑路面不平度的三维空间分布,对路面不平度非一致激励下U型道路的动力响应进行研究.结果表明,当路面平顺时,车-路耦合作用力波动很小;随着路况的变差,车-路耦合作用力迅速增大;在路面不平度的非一致激励下,左右轮作用力存在明显差异.车辆行驶速度对动载系数的影响较小,路面不平度对动载系数的影响较大.路况较差时,应考虑车辆荷载的冲击效应. To analyze tile dynamic characteristics of U-type road under moving vehicles, the coupled vibration problem is decomposed into two independent motion system, i.e. vehicle vibration subsystem and road vibration subsystem. The displacement coordination equation of wheel and pavement is used to consider the contact of vehicle and road. Based on the formula derivation of vehicle vibration differential equation, the dynamic responses of U-type road is analyzed and studied with the 3-D spatial distribution of road surface roughness considered. The results show that the fluctuation of vehicle-road coupling force is small when the road surface is smooth. The vehicle-road coupling force increases rapidly with the deterioration of road conditions. The forces of left wheel and right wheel is different under the non-uniform excitation of road surface roughness. Vehicle speed has little effect on the dynamic load coefficient comparing with road surface roughness. The impact of vehicle load should be considered under poor road conditions.
出处 《哈尔滨工业大学学报》 EI CAS CSCD 北大核心 2014年第2期109-114,共6页 Journal of Harbin Institute of Technology
基金 国家自然科学基金资助项目(50779032)
关键词 下穿U型道路 车一路耦合振动 三维路面重构 动载系数 U-type road vehicle-road coupling vibration 3-D pavement reconstruction dynamic load coefficient
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  • 1孟美丽,高海彬.封闭式路堑U形槽结构的设计和计算[J].铁道建筑,2011,51(8):81-83. 被引量:9
  • 2李虹.公路U形封闭式路堑优化设计方法探讨[J].铁道标准设计,2011,31(9):27-29. 被引量:4
  • 3HARDY M S A, CEBON D. Response of continuous pavements to moving dynamic load [ J ]. Journal of Engineering Mechanics, 1993,119 (9) : 1762-1780.
  • 4周玉民,谈至明,刘伯莹.1/4车-路耦合动力学模型研究[J].同济大学学报(自然科学版),2012,40(3):408-413. 被引量:11
  • 5张锋,冯德成,凌贤长,王子玉,朱占元.春融期重载车辆-路面-路基垂向动力分析模型[J].中国公路学报,2011,24(4):7-14. 被引量:10
  • 6CEBON D. Handbook of vehicle-road interaction [ M ]. Lisse : Swets & Zeitlinger Publishers, 1999.
  • 7SUN L. Dynamic displacement response of beam-type structures to moving line loads [ J ]. International Journal of Solids and Structures, 2001, 38(48/49): 8869-8878.
  • 8KIM S M, MI2CULLOUGH B F. Dynamic response of plate on viscous winkler foundation to moving loads of varying amplitude[ J]. Engineering Structures, 2003, 25 (9) : 1179-1188.
  • 9DODDS C J, ROBSON J D. The description of road surface roughness [ J ]. Journal of Sound and Vibration, 1973.31(2), 175-183.
  • 10AU F T K, CHENG Y S, CHEUNG Y K. Effects of random road surface roughness and long-term deflection of prestressed concrete girder and cable-stayed bridges on impact due to moving vehicles [ J ]. Computers and Structures, 2001,79(8) :853-872.

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