摘要
某钢筋混凝土高层因建筑使用功能需要,连续多层楼板大面积缺失,局部形成跃层柱。且建筑底层由于层高较高,成为软弱层。经判定本工程为平面及竖向不规则的超限高层建筑。本文详细介绍了针对结构各项不规则所采取的措施,以及为重要构件制定的性能化设计目标。为准确计算跃层柱受力情况,采用了线弹性屈曲分析的方法确定跃层柱无约束侧的计算长度系数。此外还对结构进行了设防烈度作用下的构件承载力、变形计算和楼板应力分析,以及罕遇地震作用下的静力弹塑性分析。各项分析结果表明,结构具有较好的抗震性能,能满足既定的设防目标。
To fulfill the architectural goal of large space,large areas of slabs through successive stories of this concrete tall building are cancelled,which makes some skip-floor columns.In addition,the first story is comparatively high,making it a weak story.Thus the structure is classified as code-exceeded high-rise building which is irregular in both plane and elevation.This paper introduces measurements taken to solve the irregular problems and the seismic performance objectives made for crucial structure members.Using linear-elastic buckling analysis,the effective length coefficient of columns through stories can be calculated.Besides,the structure capacity,deformation and slab stress under moderate earthquake as well as the static elastic-plastic analysis under severe earthquake were carried out.Analysis results show that the structure can perform well under target earthquakes.
作者
杨扬
YANG Yang(Tongji Architectural Design(Group)Co.,Ltd.,Shanghai 200092,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S01期107-112,共6页
Building Structure
关键词
大空间
跃层柱
超限高层
计算长度系数
large space
skip-floor column
code-exceeded high-rise building
effective length coefficient
