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首页> 外文会议>14th International ISTVS conference >The Analysis of Vehicle Speed and Load Effect on PavementStrain
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The Analysis of Vehicle Speed and Load Effect on PavementStrain

机译：车速和载荷对路面应变的影响分析

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The design of higher quality of roads is requested as the increasing ofrntransportation burden, vehicle load and speed. Many researchers studied the damagernmechanics of pavement, but the effects of vehicle speed and load on the pavement strain werernexamined separately. The effects of vehicle speed and load on the road consisting of asphaltrnmixture, granular base and soil subgrade is established and a mathematic model of thernpavement strain relating to vehicle speed and load is constructed using quadratic regressionrnorthogonal design method. The FEA results show that, for a given load, the maximum horizontalrnand transverse tensile strain at bottom of asphalt layer and the vertical compressive strain at toprnof soil subgrade decreases as vehicle speed increased. The ratio between horizontal horizontalrncompressive strain and tensile strain at bottom of asphalt layer increases as the speed isrnincreased. Vehicle speed affects the horizontal strain at bottom of asphalt layer significantly. Thernpavement damage induced by dynamic load of vehicle can be reduced when vehicle speed isrnincreased. The mathematic model of pavement strain related to vehicle speed and loadrnindicates that the relationship between pavement strain and vehicle can be described by vehiclernspeed, load, quadratic effect of speed and the mutual effect between speed and load. Thernanalysis of variance shows that speed, load, quadratic effect of speed and the mutual effectrnbetween speed and load all have significant effect on pavement strain, and speed has thernhighest effect.
机译：随着交通负担，车辆负荷和速度的增加，要求设计更高质量的道路。许多研究人员研究了路面的破坏机理，但分别研究了车速和载荷对路面应变的影响。建立了车速和负荷对沥青混合料，粒状基层和土质路基组成的道路的影响，并采用二次回归正交设计方法建立了与车速和负荷有关的路面应变的数学模型。有限元分析结果表明，对于给定的载荷，随着车速的增加，沥青层底部的最大水平应变和横向拉伸应变以及toprnof路基的垂直压缩应变均减小。随着速度的增加，沥青层底部的水平水平压缩应变与拉伸应变之比增大。车速显着影响沥青层底部的水平应变。当提高车速时，可以减少由于车辆的动态载荷引起的路面损坏。与车速和负荷有关的路面应变数学模型表明，路面应变与车辆之间的关系可以用车速，负荷，速度的二次效应以及速度与负荷之间的相互影响来描述。方差分析表明，速度，载荷，速度的二次效应以及速度与载荷之间的相互影响对路面应变均具有显着影响，速度影响最大。

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