南水北调双槽渡槽结构动力特性有限元分析
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摘要
为研究大型双槽渡槽的动力特性,采用通用有限元软件SAP2000对南水北调中线工程中的老张庄渡槽整体结构建立空间有限元分析模型,采用模态分析方法分析计算了渡槽墩体前12阶的自振频率与振动模态,得到了渡槽在3m设计水深和无水2种工况下的振动特性,整个过程和结果均达到了预期效果,为大型双槽渡槽结构的抗震分析提供了参考依据。
In order to study dynamic characteristics of the large-scale double-channel aqueduct,the spatial finite element analysis model of the Laozhangzhuang aqueduct in middle route of the South-to-North Water Diversion Project is established with software SAP2000.The modal analysis method is applied to calculate the frequency and modal of the first 12 steps for two cases,which includes conditions of design depth of three meters and without water.The whole process and the results achieve the desired effect,which provides reference basis for the large-scale double-channel aqueduct seismic analysis.
In order to study dynamic characteristics of the large-scale double-channel aqueduct,the spatial finite element analysis model of the Laozhangzhuang aqueduct in middle route of the South-to-North Water Diversion Project is established with software SAP2000.The modal analysis method is applied to calculate the frequency and modal of the first 12 steps for two cases,which includes conditions of design depth of three meters and without water.The whole process and the results achieve the desired effect,which provides reference basis for the large-scale double-channel aqueduct seismic analysis.
引文
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[2]白新理,王丽芳,姚峰.考虑流固耦合的矩形渡槽动力分析[J].华北水利水电学院学报,2009,30(5):33-36,47.
[3]陈庆涛,李根,张鹏飞,等.考虑流固耦合的大型渡槽地震响应分析[J].水电能源科学,2010,28(2):89-91.
[4]熊红霞,邓玉梅.飞鸟式钢管混凝土拱桥自振特性的模态分析[J].交通科技,2007(4):1-3.
[5]徐建国.大型渡槽结构抗震分析方法及其应用[D].大连:大连理工大学,2005.
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