变量分布模型对杆塔构件可靠度影响  

Influence of Variable Distribution Model on Transmission Tower Component Reliability

作　　者：廖邢军 黄兴 辜良雨 李钟 王波 张迪 

机构地区：[1]西南电力设计院有限公司,四川成都610021

出　　处：《广东电力》2018年第2期100-106,共7页Guangdong Electric Power

基　　金：中国电力工程顾问集团有限公司基金项目(DG1-T03-2017)

摘　　要：输电杆塔可靠度分析所涉及随机变量的取值缺乏统一标准,根据输电杆塔及其所受风荷载的特点,尤其是考虑风振效应的影响,改进了杆塔可靠度计算所需的变量分布模型,并基于此改进模型对杆塔构件可靠性指标进行校准,再与基于其他变量模型得到的校准结果进行对比。结果表明:基于不同变量模型得到的构件可靠性指标值有明显区别,且构件可靠性指标对风荷载变量模型参数的敏感性较高,因此通过民用建筑统计资料所推断的变量参数不适用于输电杆塔结构。In viewof lack of unified standards for randomvariables for analysis on reliability of he transmpaper introduces improved variable distribution model for reliability calculation according characteristics of the transmission tower and its wind loads especially influence of wind vibration effecl. It calibrates reliability nents based on this improved model and compares calibration results obtained from other variable models. Corresponding re-sults indicate there are significant differences among reliability indexes from these models anindexes on parameters of variable models of wind loads are highes. It indicates variable parameture statistics are not appropriate for transmission tower structure.

关 键 词：构件可靠度 变量分布模型 可靠性指标 输电塔 荷载 

分 类 号：TM753[电气工程—电力系统及自动化]