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文章针对水泥混凝土路面板底脱空的特点,建立了板角、板边脱空的力学分析模型,根据交通等级和公路等级进行疲劳和动载修正,提出了脱空板荷载疲劳应力的计算方法。研究了脱空尺寸及交通等级对脱空应力的影响关系,按照钢筋混凝土设计理论,确定了不同脱空状态板体补强设计时所需的配筋量。
In this paper, according to the characteristics of emptying of cement concrete pavement bottom, mechanical analysis model of plate angle and slab edge void is established, fatigue and dynamic load correction are made according to traffic grade and highway grade, and the calculation method of load fatigue stress of freeboard is proposed . The effect of void size and traffic grade on the voidage stress was studied. According to the design theory of reinforced concrete, the amount of reinforcement required to reinforce the design of plate body under different void conditions was determined.