装配式钢结构箱形柱塞焊-芯筒式法兰连接性能试验研究  

EXPERIMENTAL STUDY ON THE PERFORMANCE OF ASSEMBLED STEEL-STRUCTURE BOX-SHAPED COLUMN FLANGE CONNECTION ACHIEVED BY PLUG WELDING-CORE SLEEVE

作　　者：张艳霞 金博文[1] 黄哲文 刘梓洋 江锟 ZHANG Yan-xia;JIN Bo-wen;HUANG Zhe-wen;LIU Zi-yang;JIANG Kun(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing Energy Conservation&Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京建筑大学北京节能减排与城乡可持续发展省部共建协同创新中心,北京100044

出　　处：《工程力学》2022年第2期110-122,共13页Engineering Mechanics

基　　金：北京市教委科研项目(KZ201910016018);国家自然科学基金项目(51778036);长江学者和创新团队发展计划项目(IRT_17R06)。

摘　　要：为解决装配式钢结构中箱形柱全熔透焊接节点施工工序复杂、现场施工效率低、人工成本高的问题,提出一种箱形柱塞焊-芯筒式法兰连接节点及其设计方法。设计了3组不同构造形式的塞焊-芯筒式法兰连接节点、1组无芯筒法兰连接节点和1组无连接箱形柱构件,并对其进行了拟静力试验研究。试验结果表明:相较于无芯筒法兰连接节点,塞焊-芯筒式法兰连接节点初始刚度提高16.6%,最大承载力平均提高9.97%,芯筒的设置能够大幅提升节点的力学性能;相比于10.9级高强螺栓,12.9级高强螺栓较大的预拉力使法兰板间挤压力增大,限制法兰板间开口,提高了节点的整体刚度;设置法兰板加劲肋能够保护法兰与柱壁的焊缝,对节点的力学性能有较小提升;塞焊-芯筒式法兰连接节点与无连接箱形柱构件具有相近的滞回性能,结构设计时可按刚接进行计算,并且相较于传统焊接节点施焊简便,可以在实现现场高效装配的同时控制工程成本。In order to solve the problems of a complicated construction procedure,low construction efficiency and high labor costs of the box-shaped columns with full penetration welded connection in assembled steel-structure,an assembled box-shaped column flange connection achieved by plug welding-core sleeve and its design method were proposed.It is designed to conduct the pseudo-static tests for three different forms of flange connections achieved by plug welding-core sleeve(PWCS),a connection with flange(FC),and a box-shaped column without connection(BCWC).The tests results indicated that:the initial rigidity of PWCS was increased by 16.6%and the maximum bearing capacity was increased by 9.97%compared to FC.The mechanical properties of the connection can be significantly improved by the setting of the core sleeve.Compared with 10.9s high strength bolts,the employment of bolts with larger pretension of 12.9s high strength can increase the extrusion force between flange plates,restrict the opening between flange plates,and improve the overall rigidity of the connection.The stiffeners can effectively prevent weld from cracking between the flange and column and,slightly improve the mechanical properties.It can be concluded that PWCS possesses similar mechanical properties compared with that of BCWC,and it can be designed as a rigid connection when applied in actual engineering.Besides,PWCS can be assembled efficiently on site,and the engineering costs can be controlled appropriately.

关 键 词：钢结构 箱形柱 塞焊-芯筒式法兰连接 试验研究 力学性能 

分 类 号：TU391[建筑科学—结构工程]