输电铁塔大规格角钢轴压稳定系数研究  

Research on Axle Load Stability Coefficient of Large Size Angle Steel of Power Transmission Tower

作　　者：王亚东[1] 杨景胜[1] 冯衡[1] 吴海洋[1] 柯嘉[1] 

机构地区：[1]中南电力设计院,湖北武汉430071

出　　处：《广东电力》2015年第8期101-105,共5页Guangdong Electric Power

摘　　要：依托于在武汉大学进行的大规格高强度角钢承载力试验,分析了长细比为35、40、45、50、55这5种大规格高强度角钢构件的稳定系数。对比了试验测得的大角钢承载力与通过各国规范计算出的承载力,并将试验得到的柱子曲线与有限元模拟和不同规范中柱子曲线进行对比分析;采用数值回归方法,利用试验数据计算得到大角钢稳定系数推荐的计算方法,并评价了该方法的可靠性。结果表明,对大角钢承载力进行"无量纲化"处理后,大角钢仍表现出良好的"超强性能";同时认为中国现行标准规范中的b类柱子曲线用于大角钢构件的稳定承载力计算偏于保守。Based on experiment on bearing capacity of large size and high strength angle steel conducted by Wuhan university, stability coefficients of constructional elements of five kinds large size and high strength angle steels with respective slender ratio of 35,40,45,50 and 55 were analyzed.Bearing capacity measured by the experiment and that worked out according to standards of various countries was compared,column curve from the experiment and that from finite element simulation and different standards was compared and analyzed as well.Calculation method for stability coefficient of large size angle steel was worked out by means of experimental data and using numerical regression method of which reliability was evalua-ted.Results indicate that after nondimensionalization treatment was processed for bearing capacity of large size angle steel, the large size angle steel still had super performance.Meanwhile,it was considered to be conservative to use b typed column curve in Chinese existing standards for calculating stability bearing capacity of constructional element of the large size angle steel.

关 键 词：大规格高强角钢 轴压承载力 稳定系数 有限元分析 

分 类 号：TM753[电气工程—电力系统及自动化]