摘要
本文讨论的超限高层结构总高近200m,为B级不规则超限高层建筑,采用钢筋混凝土框架+核心筒的双重抗侧力结构体系,其中25层以下采用了型钢混凝土柱,核心筒在21层和32层做了局部收缩。为确保结构在地震作用下的安全性,采用性能化设计方法,性能目标为D。文本简要介绍了本工程结构性能化设计以及大震动力弹塑性分析的相关过程,对核心筒收缩节点进行了有限元分析,对穿层柱做了屈曲分析等工作,并依据计算结果采取了多种加强措施,确保抗震性能目标的实现。本工程所采用的计算方法和加强措施对类似工程具有一定的参考价值。
A super high-rise building that total height about 200 m is presented in this paper. According to Chinese codes of building,this structure is a class B and transfinite irregular high-rise building. The structure system is frame-core wall reinforced concrete structure. SRC columns are applied in the bellow of 25 th floor,meanwhile,the core wall is shrunk in size at 21 st and 32 nd layers respectively. For the safe of the structure,the level of performance-based seismic design of structure is D. A process of performancebased seismic design and dynamic elasto-plastic analysis of this building under rare earthquakes is introduced,including finite element analysis of joints and buckling analysis for skip-floor columns,and the results are studied and presented herein. The used methods and strengthen measures provide some reference values for other similarly projects.
出处
《工程抗震与加固改造》
北大核心
2016年第1期30-35,共6页
Earthquake Resistant Engineering and Retrofitting
关键词
超限高层
性能化设计
抗震性能
弹塑性时程分析
super high-rise building
performance-based design
seismic performance
elasto-plastic time-history analysis
