摘要
主要对输电塔交叉斜材平面外稳定计算问题进行探讨。对美国ASCE 10-15、中国GB 50017—2017《钢结构设计标准》和DL/T 5154—2012《架空输电线路杆塔结构设计技术规定》等标准中的相关规定进行对比分析表明:在交叉斜材一拉一压受力情况下,GB 50017—2017对于计算长度的修正较DL/T 5154—2012要小;在交叉斜材同时受压情况下,两者对于计算长度的修正水平基本一致。然后基于交叉斜材均是偏心受力构件的情况推导了考虑交叉斜材受力相关性的计算长度修正计算式。
The calculation of out-of-plane stability of cross-bracing web members in transmission tower was discussed in the paper.The comparative analysis of relevant provisions in Design of Latticed Steel Transmission Structures(ASCE 10-15),Standard for Design of Steel Structures(GB 50017—2017)and Technical Code for the Design of Tower and Pole Structures of Overhead Transmission Line(DL/T 5154—2012)showed that in the tension and compression system,the correction of calculated length in GB 50017—2017 was smaller than that in DL/T 5154—2012.In the compression and compression system,the correction level of calculated length was basically the same.Then,based on the fact that the cross-bracing web members were all eccentrically stressed members,the formulas for calculating the length of cross-bracing web members considering the force correlation were derived.
作者
李喜来
俞登科
段松涛
李正良
潘祖杰
LI Xilai;YU Dengke;DUAN Songtao;LI Zhengliang;PAN Zujie(Electric Power Planning&Engineering Institute Co.,Ltd.,Beijing 100120,China;School of Civil Engineering,University of Chongqing,Chongqing 400045,China;East China Electric Power Design Institute Co.,Ltd.,Shanghai 200001,China)
出处
《钢结构（中英文）》
2019年第10期68-72,共5页
Steel Construction（Chinese & English）
关键词
输电塔
交叉斜材
平面外稳定
长细比
transmission tower
cross-bracing web member
out-of-plane stability
slenderness ratio
