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将沥青面层抗反射裂缝疲劳寿命和水泥混凝土板弯拉疲劳强度作为复合式机场道面的设计依据,基于复合式机场道面荷载应力、温度应力及抗反射裂缝疲劳寿命的计算式,借鉴民用航空运输机场水泥混凝土道面结构设计方法和公路水泥混凝土路面结构设计方法,提出了以荷载与温度综合疲劳弯拉应力和沥青面层反射裂缝疲劳寿命为设计指标的复合式机场道面结构设计方法,以单层、双层、三层的面层结构组合方案进行对比设计。设计结果表明:面层采用双层的改性沥青混凝土方案时综合疲劳应力为4.84 MPa,抗反射裂缝疲劳寿命为699 362次,满足设计要求,是一种经济可靠的结构组合方案,因此,设计方法可行。
Based on the fatigue life of antireflective crack of asphalt pavement and bending fatigue strength of cement concrete slab as the design basis of composite airport pavement, based on the calculation formulas of load stress, temperature stress and fatigue life of antireflection crack in composite airport pavement, Air transport airport cement concrete pavement structure design method and highway cement concrete pavement structure design method, a composite airport pavement structure design method based on comprehensive fatigue bending stress of load and temperature and fatigue life of reflective cracking on asphalt pavement is proposed , To single-layer, double-layer, three-layer structure of the surface of the portfolio design comparison. The design results show that the composite asphalt concrete with double-layer modified asphalt concrete has a total fatigue stress of 4.84 MPa and an anti-reflection crack fatigue life of 699 362 times, which meets the design requirements and is an economical and reliable structural combination scheme. Therefore, Method is feasible.