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高速公路服务区路面频繁受到车辆施加的水平力的作用,超薄水泥混凝土(UTW)路面抗水平力破坏性能强,但将UTW用于服务区新建路面需要有针对性地进行路面设计。在分析服务区交通特性和UTW受力特性的基础上修正了轴载等效换算公式;引入超细粉煤灰(UFA)等量取代部分水泥,设计出的UTW板水泥混凝土满足结构要求;通过直接剪切试验和拉拔试验对比了不同层间结合措施的效果,优选出先洒改性沥青再压入碎石的层间结合措施,将其用于UTW与其下沥青混凝土层之间,并通过试验确定了碎石的最佳粒径和用量。试验路的成功实施证明UTW是能够用于服务区新建路面的。
The road surface in the service area of the expressway is frequently affected by the horizontal force exerted by the vehicle. The anti-horizontal force of the ultra-thin concrete road (UTW) pavement is very destructive. However, it is necessary to design the pavement using the UTW for the new pavement in the service area. Based on the analysis of the traffic characteristics of the service area and the force characteristics of the UTW, the axle equivalent equivalent formula was modified; the equivalent amount of ultrafine fly ash (UFA) was substituted for part of the cement, and the designed concrete wall of the UTW board met the structural requirements; The direct shear test and the pullout test compare the effect of different layer bonding measures, preferably the first layer of sprinkled modified asphalt and then into the gravel inter-layer binding measures, it will be used between the UTW and the next asphalt concrete layer, and through Test to determine the best size and amount of gravel. The successful implementation of the test road proved that UTW can be used for new pavement in the service area.