摘要
针对加速加载试验系统(APT)研发过程中遇到的加载轮的间距大小以及由此带来的路面疲劳破坏差异性问题,本文通过对路面结构进行有限元建模,施加不同轮胎间距的荷载,进行一次加载计算分析和200万次循环加载疲劳计算分析,以此来比较采用不同轮胎间距的双轮荷载进行加速加载实验时对路面破坏的差异性。计算结果表明,加载双轮轮胎间距的微小变化,在一次加载的情况下对路面破坏差异微小,多次循环加载时对路面的疲劳破坏差异性较大。本文的研究结果不仅对APT的研发提供标准化参数具有指导意义,对现有的不同APT设备在进行试验数据比较和分析时也具有一定的参考价值。
According to the accelerated loading test system （APT） damage difference problems encountered during the development of the loading wheel gap size and the resulting fatigue, this paper through the finite element model of pavement structure, loading different tire spacing, a loading calculation of calculation anal- ysis and 2000000 cycles of fatigue loading, wheel load on to compare different tire interval were accelerated loading experiment on the pavement damage of difference. The calculation results show that the change of loading, small two-wheeled tyre spacing, in a loading condition of pavement damage to small differences, many cyclic loading fatigue damage to the road of difference. The results of this study not only research and development of APT provides standardized parameters have instructive significance for different APT, the existing equipment in test data comparison and analysis also has certain reference value
出处
《交通节能与环保》
2013年第2期96-100,共5页
Transport Energy Conservation & Environmental Protection
关键词
道路工程
沥青路面
疲劳破坏
轮胎间距
差异性
road engineering
asphalt pavement
fatigue failure
tire interval
difference
