特高压Y型截面角钢输电塔设计研究  

Study on Y-type angle steel tower applied in UHV transmission line

作　　者：章东鸿[1] 崔磊[1] 

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广东广州510600

出　　处：《空间结构》2015年第4期54-59,共6页Spatial Structures

摘　　要：由于双拼十字角钢截面受力不均及经济性较差,本文提出采用角钢焊接钢板的Y型组合截面设计特高压铁塔.经过构件有限元分析、构件与铁塔真型试验,获得Y型截面合理的轴心受压承载力计算方法,Y型截面角钢轴心受压承载力可按钢结构规范b类柱子曲线及相关弯扭失稳折算公式进行计算,相比双拼十字角钢节省输电塔材料量约7%.Due to the uneven stress and low cost-effectiveness of double cross angle cross section,this paper puts forward a Y-type composite section with angle steel welding steel plate for UHV Tower.Through finite element analysis,along with the component and the tower model test,calculation method of bearing capacity of axially loaded Y section is obtained.Bearing capacity of Y type steel axial compression can be calculated according to code of steel structures B column curves and flexural-torsional buckling conversion formula,which saves the transmission tower material amount to about 7% compared to double cross angle.

关 键 词：Y型角钢 轴心受压 弯扭失稳 屈曲模态 试验分析 

分 类 号：TU391[建筑科学—结构工程] TM75[电气工程—电力系统及自动化]