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天津泰达市民广场金字塔由双管桁架形成的巨型菱形网格钢结构以及在菱形网格内设置的索杆桁架幕墙支承体系组成。对金字塔钢结构及采用的正交斜放索网幕墙支承体系的受力机理进行了研究,按照金字塔各锥面面外刚度的强弱分别采用了双向鱼腹式索杆桁架与单层正交索网幕墙支承体系。提出了金字塔钢结构与内置塔楼采用螺旋弹簧连接的结构设计方案,重点研究了这一模型的地震效应及风振响应,获得了结构在地震作用下螺旋弹簧的最优刚度取值。最后分析了结构设计中特殊节点的受力机理,并提出了节点的设计与构造方法。
Tianjin TEDA Civic Plaza pyramid from the double-tube truss formed by a large diamond-shaped grid steel structure and the grid installed in the diamond wire rod truss curtain wall support system. The mechanical mechanism of the pyramid steel structure and the orthogonal oblique cable mesh curtain wall support system was studied. According to the strength of the out-of-plane stiffness of the pyramid, the bi-directional fishbone rod truss and the single-layer orthogonal Cable network wall support system. The structural design of the pyramid steel structure and the built-in tower with a coil spring is put forward. The seismic effect and wind-induced vibration response of the model are studied emphatically. The optimum stiffness of the coil spring under the earthquake action is obtained. Finally, the stress mechanism of the special node in the structural design is analyzed, and the design and construction methods of the node are proposed.