既有网架受拉球节点托板加固技术试验研究  

Experimental research on the reinforcement technology of tensile spherical nodes in existing grid structures by welding steel support plates

作　　者：张彦龙 李华峰 郭瑞顺 马志斌 闫俊男 康艳博 刘浩东 李孟青 Zhang Yan-long;Li Hua-feng;Guo Rui-shun;Ma Zhi-bin;Yan Jun-nan;Kang Yan-bo;Liu Hao-dong;Li Meng-qing(Machinery Industry Ninth Design and Research Institute Co.Ltd,Changchun 130062,China;China Academy of Building Research,Beijing 100013,China)

机构地区：[1]机械工业第九设计研究院股份有限公司,吉林长春130062 [2]中国建筑科学研究院有限公司,北京100013

出　　处：《工程抗震与加固改造》2024年第2期146-151,共6页Earthquake Resistant Engineering and Retrofitting

摘　　要：针对既有网架结构下弦受拉球节点加固问题,提出一种基于临杆焊接托板的加固方法。该方法综合考虑了受拉球节点与杆件的材质、空间结构以及尺度效应的影响,通过将球节点周围相邻杆件焊接托板进行加固,使得该方法便于施工,且能够普遍适用于各类受拉球节点的加固工程,并通过模型试验验证和仿真研究,焊接托板后的节点域承载能力大幅提升,加固效果良好,为既有网架受拉球节点加固提供了新思路。The method of welded steel support plates to adjacent rods is proposed to reinforce the tensile spherical nodes of grid structures.The method comprehensively considers the material,space structure and scale effect of bolted spherical nodes and members,Because the support plates are welded to adjacent rods of bolted spherical nodes,this method is easy to operate and can be widely applied to reinforcement projects of various tensile spherical nodes.Through simulation and experimental verification,the bearing capacity of the node domain after welding support plates is greatly improved,which can achieve a good reinforcement effect.This method provides a new idea for the reinforcement of tensile spherical joints.

关 键 词：受拉球节点 托板 临杆焊接 节点域 

分 类 号：TU746.3[建筑科学—建筑技术科学]