基于ANCF的链型悬挂接触网找形及分析  

Analysis on Form-finding of Longitudinal Suspension Catenary Based on ANCF

作　　者：梅桂明[1] 罗群[1] 邱江洋 王江文[1] 黄仲 徐可佳[3] MEI Guiming;LUO Qun;QIU Jiangyang;WANG Jiangwen;HUANG Zhong;XU Kejia(State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu 610031,China;INTESIM(Dalian)Co.,Ltd.,Qingdao 116000,China;School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学轨道交通运载系统全国重点实验室,四川成都610031 [2]英特工程仿真技术(大连)有限公司,山东青岛116000 [3]西南交通大学电气工程学院,四川成都610031

出　　处：《铁道学报》2023年第7期44-54,共11页Journal of the China Railway Society

基　　金：四川省自然科学基金(2022NSFSC0468,2022NSFSC1937)。

摘　　要：为精准获得高速铁路接触网的初始平衡构型,基于绝对节点坐标法建立适用于不同悬挂形式接触网系统的找形模型。完成直链型悬挂接触网的找形,其中吊弦长度、接触线初始构型以及接触网静态刚度结果与参考值相比均显示了良好的一致性;完成对实际线路京津线、武广线接触网模型的找形分析,得到的各参数与参考值基本一致,且吊弦长度随承力索张力的增加;通过吊弦力系平衡建立双层迭代获取半斜链型、斜链型悬挂接触网初始平衡构型,解决其吊弦长度不易计算的问题,在动力学模型稳态下的张力结果与预设值基本相同,验证了模型的正确性与适用性;通过对比分析得到斜链型悬挂接触网具有较大的吊弦长度、定位器作用力以及较小的弹性不均匀度,可为接触网系统的工程设计、施工提供参考。To accurately obtain the initial equilibrium configuration of the overhead contact system of high speed railway,this paper established a form-finding model based on the absolute nodal coordinate formulation suitable for catenary systems with different suspension forms.First,the form-finding of the vertical longitudinal suspension catenary was completed,in which the length of droppers,the initial configuration of contact wire and the static stiffness of the catenary showed good consistency compared with the reference values.Then,the form-finding analysis of the catenary models of Beijing—Tianjin Intercity Railway and Wuhan—Guangzhou High-speed Railway was completed,concluding that the parameters obtained are basically consistent with the reference values,and the length of the droppers increases with the tension of the messenger wire.Next,the initial equilibrium configurations of semi-inclined longitudinal and inclined longitudinal suspension catenary were obtained by establishing a double-layer iteration of the droppers’force system balance,which solved the problem of difficult calculation of the length of droppers.The tension result under the steady state of the dynamic model was the same as the preset value,verifying the correctness and applicability of the model.Finally,by comparison,it is known that the inclined longitudinal suspension catenary has greater dropper length and registration arm force and smaller elastic unevenness,which can provide a reference for the engineering design and construction of the catenary system.

关 键 词：接触网 初始平衡构型 绝对节点坐标法 找形方法 链型悬挂 

分 类 号：U225[交通运输工程—道路与铁道工程]