220kV支持式管型母线结构抗震性能

英文篇名：Seismic Behavior of Supported Tubular Bus Structure in 220 kV Substation
中文刊名：电力建设
英文刊名：Electric Power Construction
作者：谢韬 ; 孙启林 ; 林康立 ; 袁广林 ; 张锐 ; 舒前进
英文作者：XIE Tao 1 ; SUN Qilin 2 ; LIN Kangli3 ; YUAN Guanglin2 ; ZHANG Rui3 ; SHU Qianjin2 (1.Xuzhou Power Supply Company ; Jiangsu Electric Power Company ; Xuzhou 221005 ; Jiangsu Province ; China ; 2.School of Mechanics & Civil Engineering ; China University of Mining and Technology ; Xuzhou 221008 ; Jiangsu Province ; China ; 3.Xuzhou Survey Design Center ; State Power Economic Research Institute ; Xuzhou 221005 ; Jiangsu Province ; China)
中文关键词：支持式管型母线 ; 地震烈度 ; 抗震性能
英文关键词：supported tubular bus ; seismic intensity ; seismic behavior
出版日期：2013-03-01
机构：江苏省电力公司徐州供电公司;中国矿业大学力学与建筑工程学院;国网北京经济技术研究院徐州勘测设计中心;
年：2013
期：03
出版单位：电力建设

摘要

为了研究管型母线结构在地震中的安全性,以220kV支持式管型母线结构为研究对象,采用有限元模态分析手段和时程计算方法,研究了结构在不同地震烈度下的振动响应特征,并计算了关键部位的主应力。计算结果表明:220kV支持式管型母线结构的前10阶自振频率为1～3Hz,处于地震波的卓越周期内,地震时结构容易出现共振;支柱绝缘子的最大弯矩都出现在底部,断裂破坏也最可能出现在这一部位;当地震荷载的烈度为7度及以下时,支柱绝缘子的最大拉应力小于陶瓷材料的设计极限应力,结构处于安全状态;在烈度为8度及以上的地震荷载作用下,会有部分位置的支柱绝缘子因受力超出材料的极限应力而发生断裂,结构处于危险状态。
In order to analyze the security of tubular bus in earthquake, taking the supported tubular bus structure in 220 kV substation as a research object, the vibration response characteristics of the structure under different seismic intensity are studied, and the principal stress at key position is calculated, by using the finite element model and time-history method. The analysis results show that the first ten natural frequencies of supported bus structure are 1～3 Hz, which are in the predominant period of seismic wave and are prone to resonance during earthquake in its structure. The maximum moment of post insulators happens at its bottom, which makes it easily to be broken. If the seismic intensity is less than or equal to 7 degree, the whole structure is safe because the tensile stress of post insulators is less than the ultimate strength of ceramic. However, if the seismic intensity is equal to or greater than 8, there will be fracture with some post insulators due to the exceeded stress, which may make the structure in danger.

引文

[1]文波,牛荻涛,赵鹏.变电站抗震性能研究综述[J].工程抗震与加固改造,2007,29(6):73-77.
    [2]张子引,袁兆祥,胡明.输变电工程抗震设计研究报告[R].北京:国网北京经济技术研究院,2009.
    [3]贺海磊,郭剑波,谢强.电气设备的地震灾害易损性分析[J].电网技术,2011,35(4):25-28.
    [4]Song J H,Kiureghian A D.Seismic response and reliability of electrical substation equipment and system[R].PEER,2005.
    [5]Stearns C,Filiatrault A.Electrical substation equipment Interaction:experimental rigid conductor studies[R].PEER,2004
    [6]Dastous J B,Kiureghian A D.Application guide for the design of flexible and rigid bus connections between substation equipment subjected to earthquakes[R].PEER,2010.
    [7]谢强,朱瑞元.汶川地震中支持式管型母线破坏机理分析[J].电力建设,2010,31(3):8-12.
    [8]Song J H,Kiureghian A D.Generalized bouc-wen model for highly asymmetric hysteresis[J].Journal of Engineering Mechanics,2006,132(6):610-618.
    [9]刘洪文.材料力学[M].5版.北京:高等教育出版社,2011:356-365.
    [10]GB50260—96电力设施抗震设计规范[S].北京:中国电力出版社,1996.
    [11]张伯艳,方诗圣,范知好.高压电气设备的抗震计算[J].中国电力,2001,34(1):44-47.