全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

车辆荷载下沥青路面动力响应随机特性及可靠性分析

, PP. 49-55

Keywords: 道路工程,沥青路面,Fourier变换,动力响应,随机特征,可靠度

Full-Text   Cite this paper   Add to My Lib

Abstract:

?为了研究车辆随机荷载作用下沥青路面的动力响应,建立了车辆随机振动模型和车辆随机激励下基层-面层双粘弹性沥青路面动力响应模型,并采用Fourier变换与小波变换相结合的新方法求得了路面随机响应解析解。根据实际车辆参数及道路参数,以路面不平度为初始激励,仿真得到了车辆随机荷载的功率谱密度函数和自相关函数,分析了沥青路面在车辆荷载下的随机动力响应特性,计算了沥青路面动力响应的主要数字特征函数,同时还对沥青路面随机动力响应进行了可靠性设计。结果表明:沥青路面动力响应的均值函数与路面等级无关,而自相关函数、功率谱密度函数及标准差均随着路面等级的下降而增加;采用提出的方法确定不同可靠度下不同等级沥青路面的动力响应值,可避免采用静载荷作为路面设计荷载的不合理性,为沥青路面的可靠性设计与分析提供参考。

References

[1]  刘小云,田润利.移动载荷作用下沥青路面稳态响应与计算[J].力学与实践,2009,31(3):64-68.
[2]  LIU Xiao-yun,TIAN Run-li.Steady Dynamic Response and Calculation on Asphalt Pavement Subjected to Moving Load[J].Mechanics in Engineering,2009,31(3):64-68.
[3]  郑仲浪.重载车辆作用下沥青路面层间力学行为研究[D].西安:长安大学,2010.
[4]  董忠红,吕彭民.移动荷载下粘弹性层状沥青路面动力响应模型[J].工程力学,2011,28(12):153-159.
[5]  KENNEY J T.Steady-state Vibrations of Beam on Elastic Foundation for Moving Load[J].Journal of Applied Mechanics,1954,21(4):359-364.
[6]  CEBON D.Handbook of Vehicle-road Interaction[M].Heereweg:Swets & Zeitlinger,1999.
[7]  孙 璐,邓学钧.移动的线源平稳随机荷载激励下梁的随机响应[J].力学学报,1997,29(3):365-368.
[8]  SUN Lu,DENG Xue-jun.Random Response of Beam Under Moving Random Load in the Line Source Form[J].Acta Mechanica Sinica,1997,29(3):365-368.
[9]  孙 璐,邓学钧.匀速运动的线源荷载激励下无限长梁动力分析[J].应用数学和力学,1998,19(4):341-347.
[10]  HUANG Yang-xian.Pavement Analysis and Design[M].Beijing:China Communications Press,1998.
[11]  DAUBECHIES I.Orthonormal Bases of Compactly Supported Wavelets[J].Communications on Pure and Applied Mathematics,1988,41(7):909-996.
[12]  WANG Ji-zeng,ZHOU You-he,GAO Hua-jian.Computation of the Laplace Inverse Transform by Application of the Wavelet Theory[J].Communications in Numerical Methods in Engineering,2003,19(12):959-975.
[13]  ZHENG Zhong-lang.Study on Interfacial Mechanical Behavior of Asphalt Pavement Under Heavy Vehicle Loading[D].Xi'an:Chang'an University,2010.
[14]  DONG Zhong-hong,LU Peng-min.A Model to Study the Dynamic Response of Visco-elastic Layered System Under Moving Load[J].Engineering Mechanics,2011,28(12):153-159.
[15]  裴建中,吴 浩,陈 勇,等.多轴移动荷载下沥青路面的动态响应特性[J].中国公路学报,2011,24(5):26-31.
[16]  PEI Jian-zhong,WU Hao,CHEN Yong,et al.Dynamic Response Characteristics of Asphalt Pavement Under Multi-axle Moving Load[J].China Journal of Highway and Transport,2011,24(5):26-31.
[17]  LIU Xiao-yun,SHI Chun-juan,CHEN Shui-jing.A Theory Research of Asphalt Pavement Dynamic Response Under Vehicle Random Stimulation[J].Applied Mechanics and Materials,2012,105(1):13-19.
[18]  SUN Lu,DENG Xue-jun.Dynamic Analysis to Infinite Beam Under a Moving Line Load with Uniform Velocity[J].Applied Mathematics and Mechanics,1998,19(4):341-347.
[19]  黄仰贤.路面分析与设计[M].北京:人民交通出版社,1998.
[20]  MONZN L,BEYLKIN G,HEREMAN W.Compactly Supported Wavelets Based on Almost Interpolating and Nearly Linear Phase Filters (Coiflets)[J].Applied and Computational Harmonic Analysis,1999,7(2):184-210.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133