摘要
为探究高电压等级设计标准以及各自设计标准下超、特高压交直流同塔多回线路杆塔构件的可靠度水平,依照现行规范GB 50545—2010及规范GB 50790—2013,采用一次二阶矩方法(FOSM)对河西走廊即将实施的±800kV/750kV交直流同塔多回线路杆塔进行了详细的可靠度计算。分析结果表明:大风工况下±800kV设计标准时的构件可靠度指标均值为3.588;各自设计标准下的构件可靠度指标均值为3.341;Q345类型钢材的构件可靠度指标略高于Q420钢材构件;同一类型钢材下的厚度等级对构件的可靠度指标有明显影响。
To explore the members'reliability of extra and ultra-high voltage AC and DC tower under high voltage grade design criterion and respective design criterion,the FOSM was used to analyze the reliability of ±800kV/750kV AC and DC tower with multi-circuit lines in Hexi Corridor according to current national code GB 50545—2010 and GB 50790—2013.The result indicates that the average reliability indexes of members are 3.588 under ±800kV design criterion and 3.341 under respective design criterion in wind load condition;the reliability index of members with Q345 rolled steel is larger than that of members Q420 rolled steel;the rank of thickness of same rolled steel affects to the reliability indexe of members.
作者
安利强
张海威
江文强
An Liqiang;Zhang Haiwei;Jiang Wenqiang(Department of Mechanical Engineering,North China Electric Power University,Baoding 071003,China)
出处
《建筑结构》
CSCD
北大核心
2019年第23期107-112,共6页
Building Structure
基金
国家自然科学基金项目(51675179)
国家自然科学基金青年基金项目(51408221)
