带摩擦剪切耗能节点的高层建筑斜交网格结构体系抗震性能研究  

Study on seismic performance of diagonal grid structural system with friction shear energy dissipation joint of super high-rise building

作　　者：黄泰赟 边建烽 李兆凡 符景明 程晓艳 翁沉卉 祝志华 HUANG Taiyun;BIAN Jianfeng;LI Zhaofan;FU Jingming;CHENG Xiaoyan;WENG Chenhui;ZHU Zhihua(Beijing Institute of Architectural Design,Beijing 100045,China;Skidmore,Owings&Merrill LLP,Shanghai 200031,China)

机构地区：[1]北京市建筑设计研究院有限公司,北京100045 [2]Skidmore,Owings&Merrill LLP,上海200031

出　　处：《建筑结构》2023年第18期144-149,130,共7页Building Structure

摘　　要：结合建筑外立面的特点,树根互联全国总部&三一集团华南总部超高层建筑采用由24根钢管混凝土斜柱构建的外露斜交网格钢框架+混凝土核心筒+内部24根钢吊柱竖向分区段悬挂承重的结构体系。每5层外框斜柱交汇节点处存在3.2m跨度的马鞍形短梁节点,在侧向作用下,剪切变形显著。将摩擦型材料应用到马鞍形节点处形成摩擦剪切耗能节点,对该结构进行抗震性能化分析,表明马鞍形摩擦剪切耗能节点在设防烈度及罕遇地震作用下能起到一定“保险丝”的作用,参与结构耗能机制,提高第二道抗震防线外框结构的延性,保护外框钢管混凝土柱。Combined with the characteristics of the facade of the building,the super high-rise building of the Rootcloud and SANY Group adopts a structural system of exposed skew grid steel frame constructed by 24 skew columns of concrete filled steel tube(CFST)+concrete core tube+24 steel suspensions in the vertical sections.There are saddle-shaped short beam joints with 3.2m span at the intersection of the skew column of the outer frame in every 5 layers,and the shear deformation is significant under lateral action.The friction material was applied to the saddle-shaped joint to form a friction shear energy dissipation joint.The seismic performance analysis of the structure shows that the friction shear energy dissipation joint can play a certain role of“fuse”under the fortification intensity and rare earthquakes,participate in the energy dissipation mechanism of the structure,improve the ductility of the outer frame of the second seismic line,and protect the outer frame concrete filled steel tube column.

关 键 词：斜交网格 钢管混凝土框架 混凝土核心筒 马鞍形摩擦剪切耗能节点 悬挂钢框架 

分 类 号：TU973.1[建筑科学—结构工程]