中科院量子创新研究院科研楼复杂结构设计

Complex structural design of scientific research building of QIRI of CAS

中科院量子创新研究院科研楼为复杂超限高层建筑。建筑形体复杂,中部45m跨度的跨河部分和西侧出挑15m的悬臂部分需要在不影响建筑功能的前提下实现,这对结构提出了挑战。建筑平面和竖向均存在多项不规则,采取性能化设计方法进行抗震设计,针对各项不规则提出了分析和设计措施。分析了诸多因素对于大跨度和长悬臂部位钢桁架受力的影响:施工方案与安装顺序、楼板刚度、次结构杆端约束、关键节点形式等。根据分析结果指导主体结构施工安装顺序、提高关键构件的安全度、减少对次结构的承载力需求。

The research building of the institute of quantum innovation of the Chinese Academy of Sciences(CAS)is a complex and out-of-code high-rise building.The complex shape of the building,45 m span across the river in the middle and 15 m cantilever out of the west need to be achieved without affecting the building function,which poses a challenge to the structure.There are many irregularities in the plane and vertical of the building.The performance-based design method was adopted for seismic design,and the analysis and design measures were put forward for the irregularities.The influence of many factors on the stress of long span and large cantilever steel truss were analyzed,including construction scheme and installation sequence,floor stiffness,sub-structure end restraint,key joint type,et al.According to the analysis results,the construction and installation sequence of the main structure was guided,the safety of the key structure was improved,and the bearing capacity of the secondary structure was reduced.