大型双槽渡槽结构振动特性分析
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摘要
根据大型双槽渡槽的结构特点，应用薄壁梁段有限元法，考虑了渡槽横向弯扭耦合振动、约束扭转变形和盆式橡胶支座等对渡槽结构动力作用的影响；对实际工程中某大型渡槽进行了振动特性分析，研究了该渡槽设计水位变化对大型渡槽模态的影响，探讨了该大型渡槽在几种工况下的模态变化范围，所得结果可为该大型渡槽的抗震设计提供依据。
Based on structural characteristics of large-scale double cell aqueduct, this paper considers the influences of aqueduct transversal bending-twisting vibration, restraint twisting deformation, rubber supports of basin shape on structural dynamic action with use of shell-beam element method. Vibration characteristics analysis is conducted for some large-scale double cell aqueduct. Influence of designed water level on the mode of the aqueduct is investigated. Variation scopes of mode of the aqueducts in a few cases are studied. The computation results lay the foundation of seismic design of the large-scale aqueduct.
Based on structural characteristics of large-scale double cell aqueduct, this paper considers the influences of aqueduct transversal bending-twisting vibration, restraint twisting deformation, rubber supports of basin shape on structural dynamic action with use of shell-beam element method. Vibration characteristics analysis is conducted for some large-scale double cell aqueduct. Influence of designed water level on the mode of the aqueduct is investigated. Variation scopes of mode of the aqueducts in a few cases are studied. The computation results lay the foundation of seismic design of the large-scale aqueduct.
引文
[1]王博,李杰.大型渡槽结构模态分析[J].地震工程与工程振动, 2000,20(3)
[2]杜晓伟.大型渡槽动力建模研究[D].郑州:郑州工业大学,2000
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[4]曾庆元.弹性系统动力学总势能不变值原理[J].华中理工大学学报,2000,28(1):l—3.
[5]殷学纲,陈淮,寒开林.结构振动分析的子结构方法[M].北京:中国铁道出版社,1991
[6]BatheKJ.Finite element proceduresin engineering analyssis[M].London:Prentice—Hall.Inc.1982.
[2]杜晓伟.大型渡槽动力建模研究[D].郑州:郑州工业大学,2000
[3]郭在田.薄壁杆件的弯曲与扭转[M].北京:中国建筑工业出版社, 1989
[4]曾庆元.弹性系统动力学总势能不变值原理[J].华中理工大学学报,2000,28(1):l—3.
[5]殷学纲,陈淮,寒开林.结构振动分析的子结构方法[M].北京:中国铁道出版社,1991
[6]BatheKJ.Finite element proceduresin engineering analyssis[M].London:Prentice—Hall.Inc.1982.
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