武汉广电全媒体中心主体结构设计
Structural design on main structure of Wuhan Multi-media Centre
边建烽 1黄泰赟 1符景明 1庄信 1黄贺堃 1祝志华 1张建兴 1杜元增1
作者信息
- 1. 北京市建筑设计研究院股份有限公司,北京 100045
- 折叠
摘要
武汉广电全媒体中心建筑体型复杂,具有大悬挑、大跨度转换等不规则项.针对项目特点,简要介绍了项目的结构体系,对正常使用状态下的大悬挑转换、单层双向索网幕墙等结构重难点的设计进行了阐述.同时,针对各层薄弱复杂连接楼盖,在地震作用下进行分塔模型与整体模型的分析对比.结果表明:通过利用顶部异形空间桁架和楼层大跨度连廊形成东西塔弹性对撑的自平衡效应,有效削减单层双向索网幕墙索力对主体结构的附加作用效应,同时为幕墙提供具有足够刚度的约束边界;对于双向同向下凹的大跨屋盖,利用造型的几何悬垂效应,采用单层双向悬垂受力钢网格结构,实现建筑和结构有机结合;地震作用下,采用取消薄弱连接楼盖的分塔模型和整体模型对竖向构件进行包络设计,提高竖向抗侧力构件的安全度.
Abstract
The building shape of Wuhan Multi-media Centre is complex,with irregular items such as large cantilever and large-span conversion.According to the characteristics of the project,the structural system of the project was briefly introduced,and the design of the key and difficult points of the structure such as the large cantilever conversion and single-layer two-way cable net curtain wall under normal use were expounded.At the same time,for the weak and complex connection floors of each layer,the analysis and comparison of the sub-tower model and the overall model were carried out under the action of earthquake.The results show that the self-balancing effect of the elastic support of the east and west towers is formed by using the top special-shaped space truss and the large-span corridor of the floor,which effectively reduces the additional effect of the cable force of the single-layer two-way cable net curtain wall on the main structure,and provides a constraint boundary with sufficient stiffness for the curtain wall.For the large-span roof with two-way concave in the same direction,the single-layer two-way overhanging steel grid structure is adopted to realize the organic combination of building and structure by using the geometric overhanging effect of modeling.Under the action of earthquake,the envelope design of vertical members was carried out by using the sub-tower model and the whole model without weak connection floor,so as to improve the safety of vertical lateral force resisting members.
关键词
武汉广电全媒体中心/悬挑结构/单层双向网格屋盖/单层双向索网幕墙Key words
Wuhan Multi-media Centre/cantilever structure/single-layer two-way grid roof/single-layer two-way cable net curtain wall引用本文复制引用
出版年
2024
NETL
NSTL
万方数据