大跨度悬索式管桥风振响应分析  

Wind-induced Response Analysis of Long Span Suspension Pipe Bridge

作　　者：王世圣[1] 张宏[2] 

机构地区：[1]石油大学(山东),山东省东营市257061 [2]石油大学(北京)

出　　处：《油气储运》2003年第1期27-29,共3页Oil & Gas Storage and Transportation

摘　　要：按照悬索式管桥的实际结构特点 ,建立了三维有限元模型。应用专业有限元分析程序 ,对悬索式管桥进行了模态分析 ,得到了结构的前二十阶固有频率和模态振型 ,通过对各阶振型的分析 ,掌握了悬索式管桥的振动形态。在模态分析的基础上 ,采用几何非线性有限元的分析方法 ,对悬索式管桥进行了横向风共振分析。分析结果表明 ,在横向风载荷作用下 。Three-dimension finite element model is built according to the actual structural characteristic of suspension pipe bridge. Model analysis of it is made by spec ial finite element software for calculation. Through modal analysis of suspensi on pipe bridge, its preceding 20 modes are obtained,and its mode shape of every mode is known. On the basis of the modal analysis, the nonlinear finite element is used to analyze the dynamic response of suspension pipe bridge to cross wind excitation. The result shows that the possibility ofdamage of suspension pipe br idge under cross wind load action is small. Some conclusion obtained in the pape r will be used as a reference for relevant engineers.

关 键 词：大跨度 悬索式管桥 风振响应分析 油气管道 有限元 模态分析 共振分析 

分 类 号：TE973.4[石油与天然气工程—石油机械设备]