输电塔抗风动力可靠性分析
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摘要
在ANSYS中建立了输电塔线体系的有限元模型,利用Kaimal谱,基于AR法模拟了输电塔线体系各点的风速时程,分析了输电塔体系的风致动力响应,根据首次超越破坏机制,以输电塔顶点位移作为控制变量,采用Poisson过程法与Vanmercke法对比分析了风速重现期为50、100a时不同安全限值的输电塔动力可靠性。结果表明,两种方法计算结果基本一致,而Poisson法计算更简单。
The finite element model of transmission tower line system is established with ANSYS.The AR method is applied to simulate wind speed time histories of transmission tower line system by using Kaimal spectrum.And it analyzes wind induced dynamic response of transmission tower system.According to the first excursion theory,taking the apex displacement of transmission tower as control variable,Poisson method and Vanmercke method are used to analyze the dynamic reliability of transmission tower system under different safety limits,which includes the reliability of design return period 50 and 100 years.The results show that two calculation methods are basically consistent while Poisson method is simple.
The finite element model of transmission tower line system is established with ANSYS.The AR method is applied to simulate wind speed time histories of transmission tower line system by using Kaimal spectrum.And it analyzes wind induced dynamic response of transmission tower system.According to the first excursion theory,taking the apex displacement of transmission tower as control variable,Poisson method and Vanmercke method are used to analyze the dynamic reliability of transmission tower system under different safety limits,which includes the reliability of design return period 50 and 100 years.The results show that two calculation methods are basically consistent while Poisson method is simple.
引文
[1]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]谢强,张勇,李杰.华东电网500kV任上5237线飑线风致倒塔事故调查分析[J].电网技术,2006,30(10):59-63,89.
[3]谢强,李杰.电力系统自然灾害的现状与对策[J].自然灾害学报,2006,15(4):126-131.
[4]中国建筑科学研究院,同济大学,建设部建筑设计院,等.建筑结构荷载规范(GB50009-2001)[S].北京:中国建筑工业出版社,2002.
[5]Simiu E,Scanlan R H.Wind Effects on Structures[M].New York:John Wiley and Sons,1996.
[6]Shinozuka M,Jan C M.Digital Simulation of Ran-dom Precesses and Its Applications[J].Journal ofSound and Vibration,1972,25(1):111-128.
[7]祝贺.多点Kaimal谱激励输电塔脉动风荷数值模拟[J].浙江电力,2008(5):14-16.
[8]上海市建设和交通委员会.高耸结构设计规范(GB50135-2006)[S].北京:中国计划出版社,2007.
[9]李桂青,曹宏,李秋胜,等.结构动力可靠性理论及其应用[M].北京:地震出版社,1993.
[2]谢强,张勇,李杰.华东电网500kV任上5237线飑线风致倒塔事故调查分析[J].电网技术,2006,30(10):59-63,89.
[3]谢强,李杰.电力系统自然灾害的现状与对策[J].自然灾害学报,2006,15(4):126-131.
[4]中国建筑科学研究院,同济大学,建设部建筑设计院,等.建筑结构荷载规范(GB50009-2001)[S].北京:中国建筑工业出版社,2002.
[5]Simiu E,Scanlan R H.Wind Effects on Structures[M].New York:John Wiley and Sons,1996.
[6]Shinozuka M,Jan C M.Digital Simulation of Ran-dom Precesses and Its Applications[J].Journal ofSound and Vibration,1972,25(1):111-128.
[7]祝贺.多点Kaimal谱激励输电塔脉动风荷数值模拟[J].浙江电力,2008(5):14-16.
[8]上海市建设和交通委员会.高耸结构设计规范(GB50135-2006)[S].北京:中国计划出版社,2007.
[9]李桂青,曹宏,李秋胜,等.结构动力可靠性理论及其应用[M].北京:地震出版社,1993.
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