输电塔-导线耦联体系模型的振动台试验研究
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摘要
进行了大跨越输电塔-导线耦联体系的振动台试验,用以检验所提出的输电塔-导线耦联体系理论计算模型和方法的合理性和正确性。试验结果表明,在纵向和侧向振动情况下,最大加速度地震反应的理论值和试验值的误差均在可以接受的范围以内,说明所提出的输电塔-导线耦联体系的理论计算模型是合理的。从理论计算结果和试验结果的误差分析可知,侧向振动情况下的输电塔理论计算模型要比纵向情况下的精确一些。导线对输电塔地震反应的影响较大,在实际计算中不可忽略。塔架与导线之间存在的耦联作用越显著,导线对输电塔地震反应的影响越大。
In this paper,a shaking table test of coupled system of transmission lines and towers is carried out to demonstrate the validity of the theoretical computational model of transmission tower systems proposed by the authors.The results show that the errors between theoretical and experimental maximum accelerations are acceptable in both in-plane and out-of-plane cases of vibration,which indicates the theoretical computational model is reasonable.The out-of-plane model is found more accurate than the in-plane one by analyzing the errors and comparing the theoretical calculation with the results of test.The effects of transmission lines on the seismic response of the transmission towers are obvious and can not be ignored.The stronger the coupling effects between lines and towers are,the greater the effects on the seismic response of the transmission towers will be.
In this paper,a shaking table test of coupled system of transmission lines and towers is carried out to demonstrate the validity of the theoretical computational model of transmission tower systems proposed by the authors.The results show that the errors between theoretical and experimental maximum accelerations are acceptable in both in-plane and out-of-plane cases of vibration,which indicates the theoretical computational model is reasonable.The out-of-plane model is found more accurate than the in-plane one by analyzing the errors and comparing the theoretical calculation with the results of test.The effects of transmission lines on the seismic response of the transmission towers are obvious and can not be ignored.The stronger the coupling effects between lines and towers are,the greater the effects on the seismic response of the transmission towers will be.
引文
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[2]American Society of Civil Engineers.Guidelines for Electrical Transmission Line Structural Loading[R].ASCE Manuals and Reports on Engineering Practice No.74,New York,1991.
[3]杨骊先.高压输电线路柔性腹杆铁塔的计算分析[J].工程力学,1996,13(增刊):46～51.Yang Lixian.Calculation and analysis for transmission tower with flexible web number[J].Engineering Mechanics,1996,13(Sup.):46～51.(in Chinese)
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[6]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.Li Hongnan,Lu Ming,Wang Qianxin.Simplified aseismic calculation for large-span self-supporting transmission tower system[J].Earthquake Engineering and Engineering Vibration,1990,10(2):81～89.(in Chinese)
[7]李宏男,石文龙,王苏岩.高压输电塔-导线耦连体系的简化抗震计算方法[J].特种结构,2002,19(3):58～61.Li Hongnan,Shi Wenlong,Wang Suyan.Simplified seismic calculation method for coupled system of transmission lines and their supporting towers[J].Special Structures,2002,19(3):58～61.(in Chinese)
[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.Li Hongnan,Wang Qianxin.Dynamic character of large-span transmission tower system[J].China Civil Engineering Journal,1997,30(5):28～36.(in Chinese)
[9]李宏男,石文龙,贾连光.考虑导线影响的输电塔侧向简化抗震计算方法[J].振动工程学报,2003,16(2):234～237.Li Hongnan,Shi Wenlong,Jia Lianguang.Simplified aseicmic calculation method considering effects of lines on transmission towers[J].Journal of Vibration Engineering,2003,16(2):234～237.(in Chinese)
[10]李宏男,石文龙,贾连光.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[J].振动与冲击,2004,23(2):1～7.Li Hongnan,Shi Wenlong,Jia Lianguang.The effect of lines on transmission tower system and simplified calculation method[J].Journal of Vibration and Shock,2004,23(2):1～7.(in Chinese)
[2]American Society of Civil Engineers.Guidelines for Electrical Transmission Line Structural Loading[R].ASCE Manuals and Reports on Engineering Practice No.74,New York,1991.
[3]杨骊先.高压输电线路柔性腹杆铁塔的计算分析[J].工程力学,1996,13(增刊):46～51.Yang Lixian.Calculation and analysis for transmission tower with flexible web number[J].Engineering Mechanics,1996,13(Sup.):46～51.(in Chinese)
[4]Mozer J D.Longitudinal load analysis of transmission line systems[J].IEEE Transactions on Power Apparatus and Systems,1977,PAS-96(5):1657～1665.
[5]国家电力公司华东电力设计院.DL/T5092-1999,《110～500KV架空送电线路设计技术规程》[S].北京:中国电力出版社,1999.East China Electric Power Design Institute.DL/T5092-1999,“Technical code for designing110～500KV overhead transmission lines”[S].Beijing:China Electronics Publishing House,1999.(in Chinese)
[6]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.Li Hongnan,Lu Ming,Wang Qianxin.Simplified aseismic calculation for large-span self-supporting transmission tower system[J].Earthquake Engineering and Engineering Vibration,1990,10(2):81～89.(in Chinese)
[7]李宏男,石文龙,王苏岩.高压输电塔-导线耦连体系的简化抗震计算方法[J].特种结构,2002,19(3):58～61.Li Hongnan,Shi Wenlong,Wang Suyan.Simplified seismic calculation method for coupled system of transmission lines and their supporting towers[J].Special Structures,2002,19(3):58～61.(in Chinese)
[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.Li Hongnan,Wang Qianxin.Dynamic character of large-span transmission tower system[J].China Civil Engineering Journal,1997,30(5):28～36.(in Chinese)
[9]李宏男,石文龙,贾连光.考虑导线影响的输电塔侧向简化抗震计算方法[J].振动工程学报,2003,16(2):234～237.Li Hongnan,Shi Wenlong,Jia Lianguang.Simplified aseicmic calculation method considering effects of lines on transmission towers[J].Journal of Vibration Engineering,2003,16(2):234～237.(in Chinese)
[10]李宏男,石文龙,贾连光.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[J].振动与冲击,2004,23(2):1～7.Li Hongnan,Shi Wenlong,Jia Lianguang.The effect of lines on transmission tower system and simplified calculation method[J].Journal of Vibration and Shock,2004,23(2):1～7.(in Chinese)
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