多工况下输电铁塔结构系统可靠度计算  

METHOD FOR SYSTEM RELIABILITY OF TRANSMISSION TOWER STRUCTURE IN VARIOUS CONDITIONS

作　　者：陈卫东[1] 李建操[2] 于艳春[1] 孙刚[1] 夏开全[3] 

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨150001 [2]滁州学院地理信息与旅游学院,安徽滁州239000 [3]国网北京电力建设研究院,北京100055

出　　处：《工程力学》2013年第B06期180-183,共4页Engineering Mechanics

基　　金：中央高校基本科研业务费项目(HEUCFZ1126)

摘　　要：研究了如何在符合国家相关规范规定的前提下,利用可靠性基本理论对输电铁塔结构系统进行可靠性分析。建立了考虑屈曲破坏的安全余量方程;推导了不同工况下失效模式间相关系数的计算公式;将PNET法应用于多工况下铁塔结构系统可靠度计算;系统归纳了针对铁塔结构系统的可靠性分析方法;最后对ZM2型输电铁塔进行了结构系统可靠性分析实例计算。The reliability of structural system about transmission tower has been analyzed based on the theory of reliability in this paper. The equation of safety margin considering buckling failure has been derived. The method of calculation about correlation coefficient among failure modes has been found in various conditions. The reliability of structural system about transmission tower has been calculated in PNET in various conditions. The calculation of reliability index about structural system of transmission tower has been summarized systematically. The reliability of ZM2 transmission tower designed by State Research Institute of Electric Power Construction Network in Beijing has been calculated using the new procedure. The feasibility of the calculation of reliability index about structural system of transmission tower has been confirmed.

关 键 词：桁架结构 输电铁塔 系统失效概率 可靠性 多工况 

分 类 号：TB114.3[理学—概率论与数理统计]