导线对输电塔体系纵向振动的影响界限及简化抗震计算方法
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摘要
根据作者提出的纵向振动时高压输电塔体系的简化抗震计算模型 ,导出了一般振动方程 ,编制了高压输电塔体系抗震计算考虑导线影响的计算程序。经大量的输电塔体系地震反应分析 ,得出了导线的影响随跨度的增加而增大的结论。分析结果表明 ,按现行《电力设施抗震设施规范》设计的大跨越输电塔体系在强震作用下是偏于不安全的。最后 ,给出了输电塔体系纵向振动时考虑导线影响的界限 ,提出了输电塔 -导线体系纵向振动的简化抗震计算方法。
A calculation program compiled is used to calculate the effects of lines on the in_plane vibration of high voltage transmission towers under the excitation of earthquake according to the simplified model of aseismic calculation of transmission tower presented by the authors.The results show that the effects of the lines are intensified as the span between two transmission towers increases and the span limit is determined according to the analysis of earthquake responses of transmission towers.At the end,the simplified method of aseismic calculation is presented for the in_plane vibration of the transmission tower_lines system.
A calculation program compiled is used to calculate the effects of lines on the in_plane vibration of high voltage transmission towers under the excitation of earthquake according to the simplified model of aseismic calculation of transmission tower presented by the authors.The results show that the effects of the lines are intensified as the span between two transmission towers increases and the span limit is determined according to the analysis of earthquake responses of transmission towers.At the end,the simplified method of aseismic calculation is presented for the in_plane vibration of the transmission tower_lines system.
引文
1 AmericanSocletyofCivilEngineersCommitteeonElectricalTrans missionStructures:LoadingsforElectricalTransmissionStructures,ASCEJournalofStructuralDivision.1982,108(5)
2 AmericanSocietyofCivilEngineers:GuidelineforElectricalTrans missionLineStructuralLoading,ASCEManualsandReportsonEn gineeringPractice,1991(74),NewYork
3 杨骊先等.高压输电线路柔性腹杆铁塔的计算分析.工程力学,1996,13(增刊):46—51
4 MozerJD ,etal.LongitudinalLoadAnalysisofTransmissionLineSystems,IEEETransactionsonPowerApparatusandSystems,1977,PAS—96(5)
5 国家电力公司华东电力设计院.《110～500KV架空送电线路设计技术规程》(DL/T 5092—1999).北京:中国电力出版社,1999
6 王前信,陆 鸣,李宏男.输电塔-电缆体系的合理抗震计算简图[J].地震工程与工程振动,1989,9(3):73—87
7 李宏男,陆 鸣,王前信.大跨越自立式高压输电塔-电缆体系的简化抗震计算[J].地震工程与工程振动.1990,10(2):81—89
8 李宏男,王前信.大跨越输电塔体系的动力特性[J].土木工程学报,1997,30(5):28—36
9 张殿生.电力工程高压送电线路设计手册[M].北京:水利电力出版社,1992
10 中华人民共和国电力工业部.《电力设施抗震设计规范》(GB 50260—96).北京:中国计划出版社,1996.
2 AmericanSocietyofCivilEngineers:GuidelineforElectricalTrans missionLineStructuralLoading,ASCEManualsandReportsonEn gineeringPractice,1991(74),NewYork
3 杨骊先等.高压输电线路柔性腹杆铁塔的计算分析.工程力学,1996,13(增刊):46—51
4 MozerJD ,etal.LongitudinalLoadAnalysisofTransmissionLineSystems,IEEETransactionsonPowerApparatusandSystems,1977,PAS—96(5)
5 国家电力公司华东电力设计院.《110～500KV架空送电线路设计技术规程》(DL/T 5092—1999).北京:中国电力出版社,1999
6 王前信,陆 鸣,李宏男.输电塔-电缆体系的合理抗震计算简图[J].地震工程与工程振动,1989,9(3):73—87
7 李宏男,陆 鸣,王前信.大跨越自立式高压输电塔-电缆体系的简化抗震计算[J].地震工程与工程振动.1990,10(2):81—89
8 李宏男,王前信.大跨越输电塔体系的动力特性[J].土木工程学报,1997,30(5):28—36
9 张殿生.电力工程高压送电线路设计手册[M].北京:水利电力出版社,1992
10 中华人民共和国电力工业部.《电力设施抗震设计规范》(GB 50260—96).北京:中国计划出版社,1996.
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