南京六朝博物馆暨圣和酒店结构设计

Structural design of Nanjing Six Dynasties Museum and Saint Harmony Hotel

南京六朝博物馆暨圣和酒店融合了博物馆和精品酒店两种功能,围绕保护文物遗址展示以及建筑平面功能、立面造型、室内空间的要求,形成楼层平面凹凸不规则、楼板不连续、错层、局部托柱转换、大悬挑等平面竖向多项不规则情况,属特别不规则结构。结构体系采用局部带钢支撑的型钢筋混凝土桁架双重抗侧力体系框架-剪力墙体系,楼盖体系除常规梁板体系外采用宽扁梁-大跨度板楼盖、满天星井字密肋板式变截面预应力梁楼盖体系,基础体系采用考虑支护桩参与作用的桩筏基础。采用PKPM-SATWE和MIDAS Building这两种有限元软件对比分析,使结构主周期避开场地卓越周期,并获得较好的各项计算指标。对关键构件进行性能化设计,对薄弱环节关键节点提出抗震构造措施。运用预应力空心楼板、钢管混凝土柱、型钢混凝土柱、钢桁架等多种组合结构形式,使结构具有良好的延性及抗震性能。

Nanjing Six Dynasties Museum and Saint Harmony Hotel integrates the functions of museums and boutique hotels. According to the requirements of preserving cultural relics exhibition and building plane function, elevation modeling and interior space, there are many plane and vertical irregularities in the structure, including irregular concave and convex floors, discontinuous floor slab, staggered floor, local supporting column conversion, large cantilever and so on. It is a particularly irregular structure. The structural system adopts the frame-shear wall system of double lateral resistance system of partial steel-supported steel reinforced concrete truss, and the floor system adopts wide flat beam and large span plate system and variable section prestressed beam with full well-shaped multi-ribbed plate, besides the conventional beam-slab system. The pile-raft foundation considering the participation of supporting piles was adopted in the foundation system. Two kinds of finite element software PKPM-SATWE and MIDAS Building were used to make the main period of the structure avoid the predominant period of the site and obtain better calculation indexes. Performance-based design of key components was carried out, and seismic structural measures were proposed for key nodes in weak links. Prestressed hollow slab, concrete filled steel tubular column, steel reinforced concrete column, steel truss and other composite structures were used to make the structure have good ductility and seismic performance.