前海法治大厦上部结构设计

Superstructrure design of Qianhai Justice Mansion

前海法治大厦16.5m高度处的东西两侧设置悬挑跨度17.4m的大悬挑结构;建筑内部第2,3层为通高大厅,形成35.8m跨度的大空间结构。采用带斜拉杆的钢框架-核心筒结构。设计中采取结构自平衡控制、加强核心筒刚度、控制结构水平位移及拉杆应力等策略,利用斜拉杆将上部8层框架结构重力荷载传至落地筒体、框架柱。重点介绍该结构体系的选型和结构设计策略、重力作用下的传力路径、舒适度分析、施工顺序的合理确定和模拟、拉杆张拉应力控制、节点设计及结构在各种作用下的工作性能。

There are 17.4m-span large cantilever structure set at the level of 16.45m on both the west and east side of the Qianhai Justice Mansion. The second and third layers of the building are through the high space inside the building to create an open hall with the large space structure spanning 35.8m span. The structure adopts steel frame-corewall structure with oblique tensile rods. In the design, strategies were adopted including the self-balancing control of the structure, strengthening the rigidity of the corewall, controlling the horizontal displacement of the structure and the stress of the tensile rod. The gravity load of the upper 8 layers of frame structure was transferred to the ground corewall and frame columns by the oblique tensile rods. The structural system selection and structural design strategy were introduced emphatically as well as force transmission path under the influence of gravity, serviceability analysis, reasonably determination and simulation of the construction sequence, rod tensile stress control, joint design and working performance of the structure under various loads.