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针对斜拉-悬索体系跨度大、刚度小以及对风和车辆作用较为敏感的特点,以一待建空中客车系统为工程背景,在分析风、车、线路三者相互作用的基础上,建立了风-车-线路非线性空间耦合分析模型。对有限元分析软件ANSYS进行二次开发,通过风荷载和车辆荷载的自动加载,实现车辆运行全过程的仿真模拟,从而得到车辆和斜拉-悬索体系的动力响应。实例分析结果表明,斜拉-悬索体系中斜拉索的位置和刚度对车辆的竖向加速度响应有显著的影响。研究结论为大跨度柔性斜拉-悬索体系的进一步优化设计提供了依据。
Aiming at the characteristics of large span, small stiffness and more sensitive to the wind and vehicle’s action of the cable-stayed cable system, based on the background of an airbus system to be built, based on the analysis of the interaction between the wind, the vehicle and the line, Wind - vehicle - line nonlinear coupling analysis model. The secondary development of the finite element analysis software ANSYS is carried out. Through the automatic loading of the wind load and the vehicle load, the simulation of the whole process of the vehicle operation is realized, and the dynamic response of the vehicle and the cable-stayed suspension system is obtained. The case study shows that the position and stiffness of the stay cables in the cable-stayed cable system have a significant impact on the vertical acceleration response of the vehicle. The research conclusion provides the basis for further optimization design of long-span flexible cable-stayed cable system.