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邯郸文化艺术中心包括博物馆、大剧院、城规馆和图书馆,采用钢筋混凝土框架-剪力墙结构与钢结构的混合结构。博物馆和图书馆利用多层结构高度形成巨型悬挑钢桁架,将部分楼层整体悬挑。外围钢桁架为空间曲面,结构形式复杂。大剧院上方的椭球形顶盖采用双向正交钢管桁架体系形成双层网壳结构。壳体平面尺寸为108m×85m,高度为22.5m。结构内部空旷,楼板开洞较大,楼板标高复杂,造成楼板不连续。结构刚度分布不均匀。巨型悬挑钢桁架和转换结构造成抗侧力构件竖向不连续。整体结构属于复杂超限工程。针对结构特点,采用基于性能的设计方法,对重点部位制定了性能目标。采取了加厚楼板、设置楼板暗撑、加强墙体约束等抗震加强措施。采用多种程序分析了结构在不同地震水准作用下的弹性或弹塑性响应。补充了楼板应力分析、重要剪力墙应力分析、钢结构稳定分析、防止连续倒塌分析、壳体单独模型分析等。结果表明,结构能够实现设计性能目标,具有良好的抗震性能。
Handan Culture and Arts Center, including museums, theaters, urban planning agencies and libraries, the use of reinforced concrete frame - a combination of shear wall structure and steel structure. Museums and libraries use multi-storey structures to form giant cantilevered steel trusses that partially overhang part of the floor. The steel truss is a space surface with complicated structure. The ellipsoidal dome above the Grand Theater adopts a bidirectional orthogonal steel pipe truss system to form a double-layer reticulated shell structure. Shell plane size of 108m × 85m, height of 22.5m. The interior of the structure is open, the floor hole is large, and the elevation of the floor is complex, resulting in the floor discontinuity. Structural stiffness distribution is not uniform. Giant cantilevered steel truss and conversion structure caused vertical resistance member vertical discontinuity. The overall structure is a complex overrun project. In view of the structural characteristics, a performance-based design method is adopted, and performance targets are set for the key parts. Adopted to thicken the floor, set the floor slab, strengthen the wall restraint and other seismic strengthening measures. Various procedures were used to analyze the elastic or elasto-plastic response of the structure under different seismic levels. Complement the floor stress analysis, stress analysis of the important shear wall, steel structure stability analysis, to prevent continuous collapse analysis, shell separate model analysis. The results show that the structure can achieve the design performance objectives, with good seismic performance.