黄浦文化中心大跨钢框架-支撑体系结构抗震超限设计

Seismic over-limit structural design of long-span steel frame-brace system for Huangpu Cultural Center

黄浦文化中心包括1000座剧院、300座多功能厅以及5个影厅,上部结构平面及空间关系复杂,建筑立面沿竖向层层退台,造成结构构件竖向不连续等等。本文针对结构特点分析超限情况,提出相应结构设计措施及对策,以确保整体结构设计的安全可靠和经济性。计算采用YJK和ETABS软件对结构进行小震弹性反应谱分析;采用ABAQUS软件对结构进行大震动力弹塑性分析;对转换桁架单榀模型及穿层柱进行细化分析。结果表明,结构抗震超限设计达到预定的抗震性能目标,确保了结构的安全可靠。

Huangpu Cultural Center consists of 1000-seats theater,300-seats multifunctional hall and 5 movie theatres.The super-structure has complex plane and spatial layouts.The set-back along the elevation causes vertical discontinuity of structural members.The over-limit situation is analyzed according to the structural characteristics,and the corresponding structural design measures and countermeasures are put forward to ensure the safety,reliability and economy of the overall structural design.YJK and ETABS software were used to analyze the elastic response of frequent earthquakes spectrum.ABAQUS software was used to analyze the elasto-plastic response of rare earthquakes.A detailed analysis of a single frame model of transfer truss and through layer column was carried out.The results show that the seismic overlimit design achieves the target of seismic performance and ensures the safety and reliability of the structure.