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针对飞机在起飞状态和着陆滑跑时对水泥混凝土道面结构产生较大的水平荷载,采用ANSYS软件建立足尺9块道面板三维有限元分析模型,研究了2种典型飞机起飞时轮载作用于6种荷载位置时道面结构的力学响应,并分析了着陆时水平力系数对道面结构响应的影响。结果表明:起飞时,2种机型对道面结构的应力峰值分别变化了0.12MPa和0.05MPa;道面板应力峰值与水平荷载呈线性变化,仅在单轮主起落架作用在荷位1时呈非线性关系;轮载作用于板中和纵缝板边时,水平荷载对道面板应力影响较小;轮载作用于板角和横缝中部时,道面板应力峰值同水平荷载方向有关。
Aiming at the large horizontal load of cement concrete pavement structure during take-off and landing, the three-dimensional finite element model of full-scale 9-panel pavement was established by ANSYS software and the wheel loading The mechanical response of pavement structure at six load locations was analyzed and the effect of horizontal force coefficient on pavement structure response was also analyzed. The results show that the stress peaks of pavement structures vary by 0.12MPa and 0.05MPa respectively at the time of takeoff and the peak stress of the pavement slab changes linearly with the horizontal load. Only when the single-wheel main landing gear acts on the load 1 When the wheel load acts on the slab angle and longitudinal seam edge, the horizontal load has a little effect on the slab stress. When the wheel load acts on the middle of the slab angle and transverse joint, the peak stress of the slab is related to the horizontal load direction.