钢管K形变径加强节点受力性能研究  

Study on the Mechanical Behavior of Sleeve Reinforced CHS K-joints

作　　者：季荣华[1] 沈程[1] 魏建军[1] 董军[2] 徐进[1] JI Ronghua;SHEN Cheng;WEI Jianjun;DONG Jun;XU Jin(Institute of Construction Engineering Technology,Changzhou Vocational Institute of Engineering,Changzhou 213164,China;New Steel Structure Research Institute,Nanjing Technology University,Nanjing 211816,China)

机构地区：[1]常州工程职业技术学院建筑工程学院,江苏常州213164 [2]南京工业大学新型钢结构研究所,南京211816

出　　处：《建筑钢结构进展》2020年第3期92-98,共7页Progress in Steel Building Structures

基　　金：2015年度江苏省建设系统科技项目(2015ZD38);2017年度江苏省住建厅建设系统科技项目(2017ZD179)。

摘　　要：为了研究K形节点主管变径加强连接在大跨度钢管结构中的受力性能,采用有限元软件ABAQUS对K形变径加强节点进行了3种增强模式的承载力和滞回性能的研究:增加管径及壁厚、整体只增加管径和整体增加管径及壁厚,通过比较对K形变径加强节点的受力性能作出评价;并结合公式法的计算结果,分析产生误差的原因。研究结果表明,K形变径加强节点的承载能力明显优于普通节点的承载能力,具有较好的滞回曲线和骨架曲线,表现出良好的抗震性能,研究结果可为工程设计提供参考依据。To study the mechanical behavior of sleeve reinforced CHS K-joints in large-span steel tubular structures,the finite element software ABAQUS is used to study the bearing capacity and hysteresis performance of the K-joint with three ways of reinforcement:reinforcing sleeve,increasing the overall diameter,and increasing the overall diameter and thickness.Through the analysis,the bearing capacity of reinforced sleeve is evaluated,and the reasons of the errors are analyzed and compared with the formula calculation.The research shows that the bearing capacity of the reinforced sleeve is obviously higher than that of common joints.It has a better hysteresis curve and skeleton curve,and exhibits superior seismic performance.The research results can provide a reference for engineering design.

关 键 词：变径加强节点 滞回曲线 抗震性能 

分 类 号：TU391[建筑科学—结构工程]