考虑导线影响的输电塔侧向简化抗震计算方法

英文篇名：Simplified Aseicmic Calculation Method Considering Effects of Lines on Transmission Tower
中文刊名：振动工程学报
英文刊名：Journal of Vibration Engineering
作者：李宏男 ; 石文龙 ; 贾连光
英文作者：Li Hongnan (National Key Lab. of Coasted and Offshore Engineering ; Dalian University of Technology Dalian ; 116024) Shi Wenlong Jia Lianguang (Department of Civil Engineering ; Shenyang Architectural and Civil Engingeering Institute Shenyang ; 110015)
中文关键词：输电铁塔 ; 侧向振动 ; 抗震计算 ; 导线影响
英文关键词：transmission tower ; out-of-plane vibration ; aseicmic calculation ; effects of line
出版日期：2003-06-15
机构：大连理工大学海岸与近海工程国家重点实验室,沈阳建筑工程学院土木工程系,沈阳建筑工程学院土木工程系大连,116024 ,沈阳,110015 ,沈阳,110015
年：2003
期：02
出版单位：振动工程学报

摘要

根据作者提出的侧向振动时高压输电塔体系的简化抗震计算模型 ,导出了振动方程 ,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 ,给出了输电塔体系侧向振动时考虑导线影响的界限 ,提出了输电塔 -导线体系侧向振动的简化抗震计算方法。
In this paper, the generalized equation of motion for the coupled system of transmission tower and the conductors in out-of-plane vibration and its computational method are given according to the simplified model developed. A computer program written by authors is used to calculate the seismic responses of the system under the action of earthquake. The results show that the effects of the lines on the high voltage transmission tower increase with the span between two towers. Furthermore, the limit of the span of transmission lines is proposed based on the calculation and analysis of the seismic responses of transmission towers. Finally, the simplified method of aseicmic calculation for the engineering design is presented for the coupled system of transmission tower-conductors in out-of-plane vibration.

引文

1　Am ericanSociety ofCivilEngineersCom mittee onElec-tricalTransmissionStructures.L oadings for electricaltransmission structures.ASCE Journal ofStructuralDi-vision.1982;108(5):1088—1105
    2　AmericanSociety ofCivilEngineers.Guidelines for elec-trical transmission line structural loading.ASCE Manu-als andReports onEngineeringPracticeNo.74,NewYork1991
    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,et al.L ongitudinal load analysis of transm is-sion line system s.IEEE Transactions onPowerAppara-tus andSystems,1997;PAS-96(5):1657—1665
    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/T5092-1999).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.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.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.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.北京:水利电力出版社,1992
    10国家电力工业部.电力设施抗震设计规范(GB50260-96).北京:中国计划出版社,1996