论文部分内容阅读
针对目前刚性道面未考虑道面结构参数、起落架机型及滑跑速度与响应深度之间关系的现状,借助ANSYS软件建立45m×15m×10m的有限元模型,计算了8种面层厚度、6种面层模量、5种基层厚度、5种基层模量和5种土基模量下B737-800动荷载的响应深度,并类比另4种机型的计算结果,分析了起落架构型对结果的影响;同时形成了B737-800起飞过程中响应深度的动态变化曲线.研究结果表明,响应深度随面层厚度、面层模量、基层厚度与基层模量的增大呈线性减小趋势,随土基模量的增大而增大,两者关系服从二次函数,且土基模量对响应深度最为敏感;同时起落架构型对响应深度也有较大贡献;飞机起飞过程中,响应深度呈先小幅增加而后迅速减小的非线性变化.研究结果为机场道面结构参数的选取和场道维护提供了理论依据和参考.
Aiming at the current situation that the rigid pavement is not concerned with the structural parameters of the pavement, the type of the landing gear and the relationship between the running speed and the response depth, a 45m × 15m × 10m finite element model is established by ANSYS software. , Six kinds of surface modulus, five kinds of basement thickness, five kinds of basic modulus and five kinds of soil-based modulus B737-800 dynamic load response depth, and the analogy of the other four models of the calculation results, analysis of the landing gear The results show that the response depth decreases linearly with the increase of the surface layer thickness, surface modulus, base layer thickness and the base layer modulus The small trend increases with the increase of the modulus of the soil foundation. The relationship between them depends on the quadratic function, and the modulus of the soil foundation is most sensitive to the response depth. Meanwhile, the landing gear configuration also contributes greatly to the response depth. , The response depth increases at first and then decreases rapidly.The research results provide the theoretical basis and reference for the selection of airport pavement structure parameters and the maintenance of the track.