淮州新城国际会展中心抗震性能化设计

Anti-seismic performance-based design of Huaizhou New City International Convention and Exhibition Center

淮州新城国际会展中心结构主体由桁架体系、屋面网格及下部框架支撑(屈曲约束支撑)体系组成。结构存在楼板大开洞、穿层柱、扭转不规则等超限项目,为复杂超限钢结构。根据结构的受力特点,对不同的结构部位提出了相应的抗震性能目标,并采用MIDAS Gen和SAUSAGE软件进行了结构多水准内力分析,通过抗震性能化设计和合理的抗震措施,确保结构具有足够的抗震能力,满足抗震设防要求。采用ANSYS软件进行了关键节点的有限元分析以确保节点的安全可靠。结果表明,结构采用的性能化设计方法和加强措施是安全可靠的,能够实现“三水准”抗震性能设计目标。

The main structure of Huaizhou New City International Convention and Exhibition Center is composed of truss system,roof grid and lower frame-brace(buckling restraint brace)system.The structure is a complex over-limit steel structure,whose out-of-code contents include large holes in the floor,skip-floor columns,and irregular torsion.According to the mechanical characteristics of the structure,corresponding anti-seismic performance-based targets were proposed for different structural parts,and the multi-level internal force analyses of the structure were carried out using MIDAS Gen and SAUSAGE softwares.The anti-seismic performance-based design and reasonable seismic measures were adopted to ensure that the structure has sufficient seismic capacity and meet the requirements of seismic fortification.The finite element analysis of the key nodes was carried out using ANSYS software to ensure the safety and reliability of the nodes.The results show that the anti-seismic performance-based design methods and strengthening measures proposed in the structure are safe and effective,and can achieve the performance-based seismic design goals of“three-level”.