摘要
输电塔结构构件的轴心受压稳定承载力往往是构件设计的控制因素。在目前输电塔构件的加固方案中,利用增大截面来提高轴心受压稳定承载力的方法应用非常广泛。对于输电塔交叉斜材,往往无法全长加固。本文针对该类无法全长增大截面的构件加固后的弯曲稳定承载力进行理论分析与有限元模拟研究。结果对比发现,本文基于能量法与边缘屈服准则得到的承载力显式公式与有限元分析结果接近,更方便于工程应用。
The axial compression stability bearing capacity of transmission tower structural members is often the controlling factor in the design. Among the reinforcement methods of power transmission tower members, increasing the cross-section is widely used. For the cross bracing of transmission tower, it is often impossible to reinforce the full length.This paper conducts theoretical analysis and finite element simulation research on the stability bearing capacity of partially enlarged section of member. By comparison, it is found that the explicit formula of bearing capacity obtained in this paper based on the energy method and the edge yield criterion is quite close to the finite element analysis result,which is more convenient for engineering applications.
作者
董义义
吴海兵
曾二贤
王思宇
DONG Yiyi;WU Haibing;ZENG Erxian;WANG Siyu(China Electric Power Planning&Engineering Institute Co.,Ltd.,Beijing 100011,China;Central Southern China Electric Power Design Institute,Wuhan 430013,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S02期1363-1366,共4页
Building Structure
关键词
构件加固
稳定承载力
能量法
边缘屈服准则
steel structure reinforcement
bearing capacity
energy method
edge yield criterion
作者简介
董义义,博士,工程师,Email:yydong@eppei.com;通信作者:吴海兵,硕士,工程师,Email:whb5785@csepdi.com。
