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文章对黄土地区路面超载现状进行了调研分析,针对超重轴载对单轴双轮和三轴双轮设计荷载工况下混凝土面板应力和疲劳寿命以及超载工况下混凝土面板应力和疲劳寿命进行了分析。结果表明:相同轴重条件下,由于叠加效应,三轴双轮荷载产生的板内应力大于单轴双轮;在超重轴载作用下,混凝土面板内产生的应力增大,混凝土面板疲劳寿命大幅度降低。
In this paper, the status quo of road surface overloading in loess area is investigated and analyzed. According to the stress and fatigue life of concrete slab under unilateral and double-wheel and tri-axle double-wheel design loads and the stress and fatigue life of concrete slab under overload condition, analysis. The results show that under the same axial load, the stress in the plate produced by three-axis double-wheel load is greater than that in the uniaxial and double-wheel due to the superposition effect. Under the overload of axial load, the stress generated in the concrete plate increases and the fatigue life of the concrete plate is large The rate of decrease.