怡亨当代艺术会馆结构设计

Structural design of Yiheng Modern Art Centre

怡亨当代艺术会馆项目为大跨度复杂连体结构,地上部分由两栋塔楼及两个空中连廊组成。两栋塔楼均为单跨结构,在7～9层、15～17层分别设有3层高连体结构,将两栋塔楼连为一体,使塔楼和连廊共同受力、共同工作。上连廊主要受力体系由两道连接于塔楼之间的两道空腹桁架组成,跨度约为38m;下连廊与上连廊相比,体型基本一致,但向外旋转了9°左右。根据风洞试验数据,对整体结构计算分析并取包络进行设计,对整体结构进行了小震、中震、大震等多工况下静力分析及罕遇地震作用下的弹塑性时程分析,对关键复杂节点进行了节点应力分析,结果表明结构具有良好的抗震性能。

Yiheng Modern Art Centre is a large-span complex conjoined structure with two towers and two air corridors. Both towers are single-span structures. There are two three-floor-height conjoined structures in 7～9 floors and 15～17 floors respectively, connecting two towers together. Two towers and two air corridors work together. The main force system of the upper corridor consists of two open-web trusses connected between the towers, with a span of about 38 m. Compared with the upper corridor, the lower corridors are basically the same, but rotate outwards by about 9°. According to the wind tunnel test data, the overall structure was calculated and analyzed, and the envelope design was conducted. The static analysis of the whole structure under frequent earthquake, fortification earthquake and rare earthquake was conducted as well as elastic-plastic time-history analysis of the whole structure under rare earthquake. The joint stress analysis of key complex nodes was carried out. The results show that the structure has good seismic performance.