输电铁塔结构平行轴布置承压构件计算方法研究  

RESEARCH ON CALCULATION METHOD OF PARALLEL AXIS LAYOUT COMPRESSION MEMBERS OF TRANSMISSION TOWER STRUCTURES

作　　者：韩军科[1] 李正[1] 朱昌建[2] 邢海军[1] HAN Junke;LI Zheng;ZHU Changjian;XING Haijun(China Electric Power Research Institute, Beijing 100192, China;Research Center of Tower Mast Structure, College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China)

机构地区：[1]中国电力科学研究院,北京100192 [2]南京工业大学土木工程学院塔桅结构工程研究中心,南京211800

出　　处：《钢结构》2018年第3期68-72,10,共6页Steel Construction

摘　　要：对平行轴布置承压构件的塔架进行试验研究,开展平行轴受力构件与其支撑横材刚度比对承载力影响规律的分析研究。结果表明:对平行轴布置承压构件而言,杆件承载能力受端部支撑的影响,但随着长细比的增大,端部支撑的影响逐渐减小;平行轴布置的K型节点斜材承载能力与横材和斜材的线刚度比有关,随着横材与斜材线刚度比的增大,斜材稳定承载力变化逐渐趋于平稳;现行相关规范缺少对平行轴布置的K型节点斜材设计方法的相关规定,在此基础上提出了平行轴布置承压构件稳定承载力计算方法,与试验结果吻合较好,计算方法合理。The experimental research on the tower with parallel axis layout compression members was carried out. The influence of the stiffness ratio of the parallel axia layout bearing members and its supporting transverse members on the bearing capacity was analyzed. The results showed that： for parallel axis layout compression members,the bearing capacity was affected by the end support,but with the increase of slenderness ratio,the influence of end support decreased; parallel axis to the arrangement of K-joint inclined material bearing capacity was related to the linear stiffness ratio of transverse and oblique materials,as the linear stiffness ratio of the transverse and oblique materials increased,the stable bearing capacity of oblique material gradually leveled off. The current specifications of parallel axis layout K-joint design method of oblique material is still unsafe,on the basis of this,the stable bearing capacity calculation method of parallel axis layout compression members was improved,the calculated results agreed well with the test results.

关 键 词：输电铁塔 平行轴布置构件 承载力计算 试验研究 节点刚度 

分 类 号：TU391[建筑科学—结构工程]