不均匀飞机轮载作用下沥青道面结构力学响应

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摘要为了研究不均匀飞机轮载作用下沥青道面结构力学响应，基于机轮条纹状接触面积假设和轮胎花纹，确定了轮胎的竖向应力函数，再结合已有研究确定了轮胎的纵、横向接触应力，计算获得了A380-800，B747-400，B777-300ER三维非均布接触应力；基于三维有限元分析模型，得到飞机三维非均布轮载作用下的道面结构力学响应，并分析了三种机型的力学响应的差异。研究结果表明：在三维非均布荷载作用下沥青道面的力学响应大于在均布竖向荷载下的力学响应；荷载的不均匀性对于沥青道面力学响应的影响沿沥青道面面层向土基逐渐减小；在三维非均布荷载作用下，沥青道面的力学响应受飞机的最大滑行质量、起落架构型、胎压、机轮个数等因素影响；随着沥青混合料模量增大，各力学响应参数的变化率也逐渐减小。
关键词：机场工程；不均匀荷载；沥青道面；有限元分析；力学响应

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	游庆龙1
	黄之懿1
	马靖莲2
	赵志3
	毕洁夫1
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关键词 ：机场工程, 不均匀荷载, 沥青道面, 有限元分析, 力学响应

Abstract：In order to study the mechanical response of asphalt pavement structure under the action of non-uniform aircraft wheel load, based on the hypothesis of wheel stripy contact area and tire pattern, the vertical stress function of tire was determined, and then the longitudinal and transverse contact stress of tire was determined based on existing research, the three-dimensional non-uniform contact stress of A380-800, B747-400 and B777-300ER was calculated; based on the three-dimensional finite element analysis model, the mechanical responses of aircraft pavement structure under three-dimensional non-uniform wheel load are obtained, and the differences of mechanical responses of three types of aircraft are analyzed. The results show that the mechanical response of asphalt pavement under three-dimensional non-uniform load is greater than that under uniform vertical load. The influence of load inhomogeneity on the mechanical response of asphalt pavement decreases gradually from asphalt pavement to soil foundation. The mechanical response of asphalt pavement is affected by the maximum taxiing mass of aircraft, landing gear configuration, tire pressure, number of wheels and other factors under three-dimensional non-uniform load. With the increase of modulus of asphalt mixture, the change rate of mechanical response parameters decreases gradually.
Key words: Airport engineering; Non-uniform load; Asphalt pavement; Finite element analysis; Mechanical response.

Key words： Airport engineering Non-uniform load Asphalt pavement Finite element analysis Mechanical response.

收稿日期: 2021-11-10 出版日期: 2023-01-15

引用本文:

游庆龙1,黄之懿1,马靖莲2,赵志3，毕洁夫1，4. 不均匀飞机轮载作用下沥青道面结构力学响应[J]. 振动与冲击, 2023, 42(1): 292-300.
YOU Qinglong1, HUANG Zhiyi1, MA Jinglian2, ZHAO Zhi3, BI Jiefu1,4. Mechanical response of asphalt pavement structure under non-uniform aircraft wheel load. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(1): 292-300.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I1/292

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