接触网的三维模型力学研究  

Research on 3D Mechanics Model for Catenary

作　　者：武志平 

机构地区：[1]中铁电气化局集团有限公司,北京100085

出　　处：《铁道工程学报》2011年第9期83-87,117,共6页Journal of Railway Engineering Society

摘　　要：研究目的:随着高速铁路的发展,接触网装配需要更加精确,这就需要有精细的接触网力学计算,目前接触网力学模型大多基于二维模型,但这种模型显然是不够真实。所以建立接触网的三维模型的具有现实意义,可以实现更加逼真的力学计算。研究结论:本文通过研究接触网的三维模型,建立了系统的静态平衡方程,通过迭代的方法求解非线性方程组,解决不同负载下的静态平衡问题。通过吊弦长度的计算,研究不同情况下的接触网的平衡位置的变化。这种三维模型能适应弓网动态作用的研究,得到较逼真的仿真模型。通过三跨接触网三维模型计算风偏,验证了模型的准确性。Research purposes： With the development of high -speed railway, the catenary should be assembled with more precision and the mechanics of the catenary should be calculated more precisely. However, the most of the current mechanics models for the catenary are the 2D ones and they can not reflect the actual situation of the catenary exactly. So the calculation of the real mechanics of the catenary can be realized by establishing the 3 D model.Research conclusions：In this paper, the research is done on the 3D model for the catenary and the systematically static balance equation is offered. The non - linear equations are obtained with iteration method to solve the problem of static balances under the different loads. Also the change of the balance positions of the catenary under the different conditions is researched through calculation of the suspension chord length. These three kinds of the 3D model are available for researching the dynamic effect of the pantograph and catenary and with them, the vivid simulation models can be obtained. The model accuracy is tested and verified by calculating the wind yaw with the 3D model for three - span catenary.

关 键 词：接触网 静态计算 三维模型 吊弦长度 

分 类 号：U225.1[交通运输工程—道路与铁道工程]