摘要
对某带伸臂加强层的型钢混凝土框架-核心筒超高层结构进行了动力弹塑性时程分析及相关振动台试验,研究该种结构体系的抗震性能及构件损伤情况。研究表明:加强层有效地加强了结构的抗侧刚度,大震作用下结构的层间位移角均能满足1/100的规范限值要求;加强层会引起结构局部刚度、承载力突变,有限元分析与试验结果均表明结构损伤较多出现在加强层附近范围以及结构的底部几层,但损伤可以控制在可接受的范围内;试验研究表明加强层斜撑破坏主要集中在节点区域,斜撑对结构刚度影响很大,应重点加强斜撑节点部位的设计。
The dynamic elastoplastic time-hilayer analysis and related shaking table tests were carried out for a super high-rise steel reinforced concrete frame-corewall structure with outriggers in strengthened layers,to study the seismic performance and damage of the structural system.The results show that the strengthened layer can effectively strengthen the lateral stiffness of the structure,and the displacement angle of the structure can meet the requirements of 1/100 of the code limit value under the rare earthquake action.The strengthened layer can cause the local stiffness and bearing capacity of the structure to change abruptly,and the finite element analysis and test results show that the structural damage mostly occurs in the vicinity of the strengthened layer and the bottom layers of the structure,but the damage can be controlled in the acceptable range.The experimental study shows that the main failure of diagonal bracing is in the joint area,and the diagonal bracing has a great influence on the structural stiffness,so the design of the joint should be strengthened.
作者
江韩
赵学斐
JIANG Han;ZHAO Xuefei(Nanjing Yangtze River Urban Architectural Design Co.,Ltd.,Nanjing 210006,China)
出处
《建筑结构》
CSCD
北大核心
2020年第15期113-117,84,共6页
Building Structure
关键词
超高层结构
型钢混凝土框架-核心筒
加强层
振动台试验
抗震性能
super high-rise structure
steel reinforced concrete frame-corewall structure
strengthened layer
shaking table test
seismic performance
