既有网架杆件外包钢管加固技术试验研究  

Experimental research on the reinforcement technology of existing grid members based on outer steel pipe

作　　者：张荣强 刘浩东 律帅驰 张彦龙 李华峰 郭瑞顺 马志斌 闫俊男 Zhang Rong-qiang;Liu Hao-dong;Lu shuai-chi;Zhang Yan-long;Li Hua-feng;Guo Rui-shun;Ma Zhibin;Yan Jun-nan(China Academy of Building Research,Beijing 100013,China;Machinery Industry Ninth Design and Research Institute Co.Ltd,Changchun 130063,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013 [2]机械工业第九设计研究院股份有限公司,吉林长春130063

出　　处：《工程抗震与加固改造》2024年第2期152-156,173,共6页Earthquake Resistant Engineering and Retrofitting

摘　　要：针对既有网架结构中承载能力不足的构件,提出了一种外包钢管的加固方法,该方法通过将外包钢管与杆件两端球节点焊接,使其直接承担网架荷载,并在内外管中间设置衬管以促进二者的共同作用,进而提高加固后杆件的整体承载能力,该加固方法可有效针对网架承载能力不足的杆件进行加固,通过仿真和试验分析,该加固方法具有较好的加固效果和工程实施性。This paper presents a reinforcement method of grid members with steel pipe shells.In proposed strengthened technology,the steel pipe is welded to the ball nodes at both ends of the grid rod to make it bear the load of the grid structure directly,and the liner tubes are set at the gap between the grid rod and the steel tube to increase the ability of them to jointly support loadings and improve the bearing capacity of the reinforced rods,the method can effectively strengthen the rods with insufficient bearing capacity of the grid.Through numerical simulation and experimental analysis,the reinforcement method of grid with outer steel pipe based on liner tube has a good reinforcement effect and engineering implementation.

关 键 词：网架加固 外包钢管 球节点焊接 衬管 

分 类 号：TU746.3[建筑科学—建筑技术科学]