洛阳正大超高层办公楼结构抗震设计

Structural seismic design of Luoyang Zhengda ultra-limit high-rise office building

洛阳正大办公楼为地上51层、地下3层的超高层建筑,该建筑上部结构采用框架-核心筒结构体系,其中框架柱采用方钢管混凝土柱,框架梁采用焊接H型钢梁。介绍了该办公楼结构设计方法和过程,包括结构选型、结构性能设计目标的确定、计算分析等。针对本工程结构的超限情况与性能设计目标,选用多种软件对结构进行了小震弹性反应谱分析、小震弹性时程分析、中震不屈服验算、中震弹性验算、静力弹塑性分析以及大震作用下的动力弹塑性时程分析。计算结果表明,采用多种软件对结构进行计算分析,并采用一定的构造设计措施,能实现结构预定的性能设计目标,同时也提高了结构体系的安全性。

Luoyang Zhengda office building is an ultra-limit high-rise building with 51 floors on the ground and 3 floors underground. The upper part of the structure adopts the frame-core tube structure system, in which the frame column adopts concrete filled square steel tubular column and the frame beam adopts the welding H-shaped steel beam. The design method and process of the building structure were discussed, including the selection of structural system, the confirmation of performance design goals, the calculational analysis and so on. According to the ultralimit situation and performance design goals of the structure, various software was used to check the elastic response spectrum analysis and elastic-plastic time history analysis under frequent earthquake, the non-yielding design, the elasticity and the static elastic-plastic time history analysis under moderate earthquake, and the dynamic elastic-plastic time history analysis under rare earthquake. The results show that using various software to analyze the structure and adopting some strengthening measures can realize the predetermined performance design goals of the structure, improve the security of the structure at the same time.