基于模拟脉动风场的铁路接触网风振响应分析
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摘要
研究了铁路接触网系统在风载下的动态响应特性.首先,采用ANSYS软件建立了腕臂结构的有限元模型,根据找形理论确定了悬挂系统初始形态.其次,采用谐波合成法模拟了运行现场的脉动风场,并对系统在风载荷作用下的动态响应进行了分析.通过与现场实测数据的对比,分析了接触网系统的风致振动响应特点.
The purpose of this paper is to study the dynamic response characteristic of the railway catenary system in condition of wind induced vibration.First,we built finite element model of the catenary support system with software ANSYS.We ensured the original form of the suspended system in according to the form-finding theory and method.Then,based on harmonic synthesis method,we simulated fluctuating wind field,and performed dynamic response simulation under the simulated wind load.Compared with the data of field tests,the response characteristic of the catenary system under wind induced vibration is investigated.
The purpose of this paper is to study the dynamic response characteristic of the railway catenary system in condition of wind induced vibration.First,we built finite element model of the catenary support system with software ANSYS.We ensured the original form of the suspended system in according to the form-finding theory and method.Then,based on harmonic synthesis method,we simulated fluctuating wind field,and performed dynamic response simulation under the simulated wind load.Compared with the data of field tests,the response characteristic of the catenary system under wind induced vibration is investigated.
引文
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[6]刘万群.大跨越输电塔线体系风振响应研究[D].上海:同济大学,2006.
[2]星谷胜.随即振动分析[M].北京:地震出版社,1977.
[3]瞿伟廉.高层建筑和高耸结构的风振控制设计[M].武汉:武汉测绘大学出版社,1991.
[4]赵臣,等.具有空间相关性风场的计算机模拟[J].空间结构,1996,2(2):23-26.
[5]李瑞平,周宁,梅桂明,张卫华.初始平衡状态的接触网有限元模型[J].西南交通大学学报,2009,44(5):732-737.
[6]刘万群.大跨越输电塔线体系风振响应研究[D].上海:同济大学,2006.
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