筒体偏置的某高层办公楼结构设计  

Structural design of a high-rise office building with an eccentric tube

作　　者：凌沛春[1] 杨金明[1] 刘赞[1] 张格明[1] Ling Peichun;Yang Jinming;Liu Zan;Zhang Geming(China Academy of Building Research, Beijing 100013, China)

机构地区：[1]中国建筑科学研究院,北京100013

出　　处：《建筑科学》2018年第5期95-99,共5页Building Science

摘　　要：筒体偏置的高层混凝土框架-筒体结构设计难点是控制扭转效应。本文结合工程实例,分析了结构产生扭转的主要因素,提出了减小扭转的结构措施。计算结果表明,筒体偏置的高层建筑只要措施得当,可以有效限制扭转,使之满足规范要求。由于筒体偏置且与外围框架基底压力相差大,为减小差异沉降,使基底反力同上部结构荷载相协调,基础采用变刚度调平进行设计。实测沉降数据显示,基础的变刚度调平设计大幅度地减小了偏置筒体与外围框架间的沉降差。The difficulty in the design of the reinforced concrete frame-core wall building with an eccentric tube is to control the torsion reaction. In this paper,the main factors of the torsion reaction are analyzed,and the structural measures are proposed to reduce the torsion reaction. The calculation results show that the eccentric tube structure which takes reasonable measures can effectively limit torsion reaction and meet the China design codes.As the difference of the base pressure between the eccentric tube and the outer frame is large,in order to reduce the settlement difference and make the base reaction coordinate with the superstructure load,the variable rigidity design of foundation is adopted. The measured settlement data shows that the variable rigidity design of foundation can greatly reduce the settlement difference between the eccentric tube and frame.

关 键 词：筒体偏置 扭转效应 基础变刚度调平 

分 类 号：TU972[建筑科学—建筑设计及理论]