基于移动载荷的弓网系统动态响应特性研究

Research on Dynamic Response Characteristics of Pantograph Catenary System Based on Moving Load

中国高速铁路俨然成为我国一张格外亮眼的名片。随着列车运行速度的不断提高,接触网和受电弓动态取流问题变得尤为重要。本文基于Workbench计算环境,以我国宁启二期铁路的弓网系统为研究对象建立了相邻间隔周期的受电系统动力学模型。该模型充分考虑支撑梁、支撑弦刚度特性和受电线材质特性。并通过力学边界设置,模拟移动载荷对该系统的影响,以实现对弓网系统在受电弓通过时的动态模拟。并提取了相关节点的响应特性,以此研究弓网系统在动载荷作用下的实际状态,为后续设计、研究提供支撑。

Chinese high-speed railway has developed into a bright name card for China.With the acceleration of railway speed,the issue of contact line and dynamic diversion of the pantograph has become more and more important.On the basis of the computing environment of Workbench,the article studies the pantograph-OCS system of the second phase of Nanjing-Qidong Railway and establishes a dynamic model of electroreceiving system between adjacent periods.This model takes full consideration of stiffness features of support beam and support string as well as the texture features of lines with power.By setting dynamic boundaries,the research simulates motive load on the system to accomplish dynamic simulation of the pantograph-OCS system on occurrence of pantograph.Besides,the research extracts reaction features at key points to explore the actual features of the pantograph system while loaded,which lays a foundation for later designs and researches.