考虑刚度折减的多棱锥型套接钢管杆挠度及附加弯矩研究  

Study on deflection and additional bending moment of slip-joint connection for multi-pyramidal steel pole considering stiffness reduction

作　　者：潘峰 陈远 蔡勇 包玉南 徐锃 PAN Feng;CHEN Yuan;CAI Yong;BAO Yu-nan;XU Zeng(Zhejiang Electric Power Design Institute,Hangzhou 310012,China;Department of Civil Engineering,Dalian Maritime University,Dalian 116026,China;State Grid Zhejiang Electric Power Company,LTD,Hangzhou 310007,China)

机构地区：[1]中国能源建设集团浙江省电力设计院有限公司,杭州310012 [2]大连海事大学土木工程学系,大连116026 [3]国网浙江省电力有限公司,杭州310007

出　　处：《计算力学学报》2023年第6期1008-1015,共8页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(51878607)资助项目。

摘　　要：多棱锥型钢管杆广泛应用于城市周边输电线路,管与管之间通常采用法兰连接,套接连接应用不大。鉴于目前对于多棱锥型套接钢管杆挠度的计算方法研究相对较少,本文根据梁的挠曲线微分方程理论,结合套接节点刚度折减,推导出在常见荷载(弯矩M、水平力P和均布力q)作用下多棱锥型套接钢管杆挠度和附加弯矩的计算方法。最后,选取典型套接钢管杆进行对比分析,得出了一些重要结论。本文对套接钢管杆挠度计算进行细致的研究,可作为输电线路钢管杆套接连接设计的参考。Multi-pyramid steel pipe poles are widely used in transmission lines around cities.A flange connection is usually used for pipe to pipe connection,and slip-joint connection is not widely used.In view of the relatively few research on the calculation method of deflection of multi-pyramid steel pipe poles,this paper will derive the common load (bending moment M,horizontal force P and uniformly distributed force q) according to the theory of differential equation of the deflection curve of a beam and the reduction of stiffness of a slip-joint joint and additional bending moment of a multi-pyramid slip-joint steel poles.Finally,typical nested steel pipe rods are selected for comparative analysis,and some important conclusions are drawn.This paper makes a detailed study on the deflection calculation of slip-joint steel poles,which can be used as a reference for the design of slip-joint connections of steel poles of transmission lines.

关 键 词：输电线路 拔梢钢管杆 套接 截面惯性矩 挠度 附加弯矩 

分 类 号：TU311[建筑科学—结构工程]