加工方式对输电铁塔螺栓连接节点承载力影响的实验研究  

Experimental Study of Processing Method Effects on Ultimate Bearing Capacity of Transmission Tower Leg Bolted Joint

作　　者：胡飞飞[1] 高长征[1] 王烨迪 刘圣西 张海威 江文强[2] 程思明 安利强[2] 原永亮 HU Feifei;GAO Changzheng;WANG Yedi;LIU Shengxi;ZHANG Haiwei;JIANG Wenqiang;CHENG Siming;AN Liqiang;YUAN Yongliang(Jilin Electric Power Research Institute Co.,Ltd.,Changchun 130021,China;Department of Mechanical Engineering,North China Electric Power University,Baoding,Hebei 071003,China;State Grid Jilin Electric Power Co.,Ltd.,Changchun,Jilin 130021,China)

机构地区：[1]吉林省电力科学研究院有限公司,长春130021 [2]华北电力大学机械工程系,保定071003 [3]国网吉林省电力有限公司,长春130021

出　　处：《结构工程师》2019年第1期180-187,共8页Structural Engineers

基　　金：国家自然科学基金(51408221);河北省自然科学基金(E2015502016)

摘　　要：输电铁塔主材通常由多段角钢通过螺栓连接而成,一旦主材节点发生破坏将造成倒塔事故发生,危及电力系统的安全稳定运行。输电铁塔主材节点多采用冲孔或钻孔方式加工而成,加工方式会影响节点的极限承载能力。针对500 kV输电铁塔中常用的Q345和Q420主材角钢,通过全尺寸节点拉伸实验,研究了冲孔和钻孔对不同螺栓直径、排列方式的螺栓连接节点的破坏载荷和破坏形式的影响,为输电铁塔设计和运行维护提供理论依据。Transmission tower leg usually consists of multi angle steels connected by bolts. Once the principal node failure, it will cause tower collapse and endanger the safety of the tower and the entire power system. The main way of processing nodes is used in punching and drilling,which influence the ultimate bearing capacity of nodes. In this paper, the full-size nodes tensile test were conducted with Q345 and Q420 leg member angle steel which commonly used in the 500 kV transmission tower. The effect of punching and drilling on failure load and failure mode of bolted joint with different diameter and arrangement was studied,which provide a theoretical basis for design and operation of transmission tower.

关 键 词：输电铁塔 主材 螺栓连接节点 加工方式 极限承载力 

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]