【摘要】 北方某些地区不停航施工昼夜温差较大，机场道面板在浇筑成型到使用阶段在板顶板底产生较大温差，施工结束后投入使用受天气状况影响，同时道面板受到温度应力与飞机荷载影响，为了分析温度—荷载耦合作用下机场水泥混凝土道面应力状态，建立温度—荷载耦合作用下的机场刚性道面三维有限元模型，使用顺序耦合对不同温度梯度作用下，不同机型和临界荷位及道面板厚度对道面板耦合作用敏感性进行分析。结果表明：道面板厚度对板边应力的影响最大，其他依次为机型、荷载作用位置以及温度梯度；道面板位移：纵边>板角>横边，增加道面板厚度最多能降低道面板板底24%的耦合应力。更多还原

【Abstract】 In some northern regions where construction continues without flight interruptions, significant temperature differences between day and night cause large temperature gradients between the top and bottom surfaces of airport pavement slabs from the casting to the usage stage. After construction, the pavement slabs experience both temperature stress and aircraft loads, affected by weather conditions. To analyze the stress state of cement concrete airport pavements under the combined effects of temperature and load, a three-dimensional finite element model of rigid airport pavement was developed. Sequential coupling was used to study the sensitivity of pavement slabs to different temperature gradients, aircraft types, critical load positions, and slab thicknesses. The results show that the influence on edge stress follows this order: slab thickness > aircraft type > load position > temperature gradient. In terms of slab displacement, the longitudinal edge moves the most, followed by the slab corner, and then the transverse edge. Increasing slab thickness can reduce the coupling stress at the bottom of the slab by up to 24%.更多还原