接触网上跨输电线断线冲击载荷研究  

A Study on Impact Load from Broken Power Transmission Line over OCS System

作　　者：黎锋[1] 罗明 宦荣华[3] 

机构地区：[1]中铁电气化勘测设计研究院有限公司,天津300250 [2]拟优(上海)软件科技有限公司,上海201601 [3]浙江大学航空航天学院,浙江杭州310027

出　　处：《中国铁路》2017年第3期75-81,共7页China Railway

摘　　要：通过多体系统动力学仿真软件Recur Dyn,建立覆冰输电线和接触网防护结构的柔性多体系统动力学模型,分析覆冰输电线断线后对接触网防护结构及其地面的冲击载荷。研究接触刚度、接触阻尼、摩擦系数等仿真参数对冲击载荷的影响规律。研究表明,由于输电线变形及与防护结构间的摩擦,冲击载荷主要集中在沿输电线的水平方向。研究结果可用于防护结构的强度设计,研究不同接触参数对冲击载荷的影响规律,为防护结构材料和外形选择提供理论依据。By RecurDyn, a multi-body dynamic simulation software, a flexible and multi-body dynamic model involving ice coating power transmission line and OCS protective structure is established to analyze the impact load generated to the OCS protective structure and the ground in case of broken ice coating power transmission line. The effects and rules of impact loads from simulation parameters, e.g. contact rigidity, contact damp, friction coefficient are studied, which show that the impact loads mainly distribute in horizontal direction along the power transmission line due to deformation of transmission line and the friction between the line and the protective structure. The results can be used for the strength design of protective structure and for the study of rules of impact loads from different contact parameters to provide theoretical foundation for material and shape selection of protective structures.

关 键 词：接触网 上跨输电线 断线 冲击载荷 柔性多体系统 动力学仿真软件 

分 类 号：U225[交通运输工程—道路与铁道工程]