某TOD商务区办公楼结构设计  

Structural design on an office building of TOD business district

作　　者：董越 段永飞 孙洪波 郭家旭 DONG Yue;DUAN Yongfei;SUN Hongbo;GUO Jiaxu(China Architecture Design&Research Group,Beijing 100044,China)

机构地区：[1]中国建筑设计研究院有限公司,北京100044

出　　处：《建筑结构》2022年第4期46-51,共6页Building Structure

摘　　要：某TOD商务区办公楼地块项目由大底盘地下室、上部多层商业及3栋高层办公楼组成,结构出地面部分设置3道结构缝,将塔楼与裙房分开。以A塔楼为例进行方案比选,对比分析结果表明:钢管混凝土框架-混凝土核心筒结构体系可有效增大办公区内部的净高空间,减小外框架柱尺寸,提高装配率,施工周期短,建造成本可控,适合此类高层办公楼选用。A、B两栋塔楼之间的连廊采用两端滑动的方式搁置在塔楼屋顶层,支座采用铅芯橡胶支座。计算分析了多种工况作用下连廊与下部塔楼之间的相对位移,分析结果表明:罕遇地震作用下,连廊与主楼之间的相对位移未超出铅芯橡胶支座允许滑移量。风荷载作用下,铅芯橡胶支座滑移量处在一个较小的范围以内。介绍了南北两个地块之间悬索屋顶的连桥结构构件布置方式,并分析了其在典型工况下的索力变化,分析结果表明:吊索施工时,应以控制索长为主,索力为辅。A TOD business district office building is composed of a large chassis basement,upper multi-storey commercial building and three high-rise office buildings.Three structure cracks were set out of the ground to separate the tower from the podium.Taking tower A as an example for scheme comparison,the analysis results show that concrete filled steel tube(CFST)frame-concrete core tube structure can effectively increase the clear height space in the office area,reduce the size of frame column,improve the assembly rate,and shorten the construction period and construction cost is controllable and it is suitable for this kind of high-rise office building.The corridor between the two towers of A、B is placed on the roof by sliding at both end.The lead rubber bearing was adopted.The relative displacement between the corridor and the lower tower under various working conditions was calculated and analyzed.The analysis results show that the relative displacement between the corridor and the main building does not exceed the allowable bearing slip under the rare earthquake,and the bearing slip is in a small range under the action of wind load.The members layout of the connecting bridge structure of suspension-cable roof between the north and south blocks was introduced,and the change of cable force under typical working condition was analyzed.The analysis results show that the control cable length should be the main factor and cable force should be the auxiliary factor in sling construction.

关 键 词：钢管混凝土框架-混凝土核心筒 铅芯橡胶支座 连体结构 滑动连接 悬索结构 

分 类 号：TU398.7􀆰[建筑科学—结构工程]