成都大魔方演艺中心大陀螺主体结构设计与分析  

Main structural design and analysis on the main venue of Chengdu Large Magic Cube Performing Arts Center

作　　者：蒋本卫 

机构地区：[1]华东建筑设计研究总院,上海200002

出　　处：《建筑结构》2014年第7期37-42,共6页Building Structure

基　　金：国家科技支撑计划资助(2011BAJ09B01)

摘　　要：成都大魔方演艺中心大陀螺主体结构为陀螺造型,结构设计采用钢筋混凝土框架-剪力墙结构体系,用悬挑桁架实现结构平面的逐层外挑。通过对结构的受力特点以及不规则情况的分析,提出了针对性的加强措施,并对拉弯构件采用有粘结预应力混凝土构件。针对这种特殊的结构体系,分析了楼板刚度和施工后浇带对结构主要构件受力的影响,结果表明,对不同的构件受力影响有所不同,设计时取各种情况下的包络结果作为关键构件的设计依据。罕遇地震作用下的弹塑性分析表明,主体结构能达到预定的抗震性能目标。The main structure of the main venue of Chengdu Large Magic Cube Performing Arts Center likes a gyro. The structural design adopts the reinforced concrete frame-shear wall structural system, the cantilever truss is used to achieve the layer-by-layer cantilever. The loading features and the irregularity of the structure were analyzed and some strengthening measures were taken, and the prestressed technology was adopted for the tension-flexure member. For this particular structural system, the mechanical behavior of the key components under without floor stiffness and with post-poured strip was studied. The results indicate that the influence is different in any components, so that the envelope results of all models were considered during the design course. The elasiic-plastic analysis under the rare earthquake indicates that the main structure can meet the requirements of the seismic performance objectives.

关 键 词：悬挑桁架 预应力混凝土 楼板刚度 施工后浇带 弹塑性分析 

分 类 号：TU393.3[建筑科学—结构工程]