杭州支付宝大楼悬臂桁架钢管混凝土柱节点试验与研究  

Experiment and Study on the Concrete-filled Steel Tube Column Joints of Cantilever Truss of Hangzhou Alipay Building

作　　者：贾斌[1,2] 袁静 杨彬[1] 张其林[1] 李兆杨 

机构地区：[1]同济大学土木工程学院,上海200092 [2]四川省建筑科学研究院,四川成都610081 [3]阿里巴巴(中国)有限公司,浙江杭州311100

出　　处：《施工技术》2015年第6期98-103,共6页Construction Technology

摘　　要：杭州支付宝大楼上部结构采用多层钢框架-钢筋混凝土抗震墙体系,通过防震缝划分为A,B,C 3个独立结构单元。为研究A区悬臂桁架中钢管混凝土柱节点的承载能力及可靠性,设计了缩尺比1∶4的节点模型并进行静载试验,对节点关键部位的应力和变形进行了监测分析。试验表明节点发生屈服或局部屈曲时的承载力高于设计荷载,同时也进行了有限元数值模拟分析。研究表明试验结果与理论分析吻合得较好,验证了节点具有较大的强度储备,经优化后能够满足实际工程需要。Hangzhou Alipay Building is a multi-storey building, the main structure of this building is the steel framework-RC seismic wall system. The structure of this building is completely divided into three independent zones with seismic joints, denoted as zonesIA,B,C. The joints studied in this paper locate in the steel cantilever truss of zone-A building. Reduced-scale experiment on the steel cantilever truss joints was carried out to verify its reliability and bearing capacity. The stress and deformation of specimens were investigated during monotonous loading process. It is indicated that the truss joints＇ local buckling and yield at the loading class is higher than design load. The finite element model was buih and was in good agreement with experiment result. Both the experiment and numerical results demonstrate that the truss joints have sufficient strength reservation and its performance will be qualified with the practical engineering after optimization design.

关 键 词：混凝土 钢管混凝土 柱节点 缩尺模型 试验研究 有限元分析 

分 类 号：TU392.3[建筑科学—结构工程]