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29年前设计及建造的26层91m高的北京长富宫中心饭店采用的是纯钢框架结构。介绍了当时该工程的设计概况,并用现行规范及软件对结构做了计算分析,验证了结构可以满足现行规范的要求。同时对同一建筑采用的三种结构形式(钢框架结构、钢框架-支撑结构与钢框架-混凝土剪力墙结构)均进行了弹性及弹塑性分析,对比表明钢抗弯框架具有较好的延性及抗震性能。最后对钢抗弯框架适用的高度范围及加强抗震框架的抗震性能进行了探讨。
The 26-storey 91m-tall Changfeng Palace Beijing hotel, designed and built 29 years ago, uses a steel frame structure. The design overview of the project at that time was introduced, and the structure was calculated and analyzed by the existing codes and software, which verified that the structure could meet the requirements of current codes. At the same time, three kinds of structural forms (steel frame structure, steel frame-support structure and steel frame-concrete shear wall structure) adopted by the same building were analyzed in terms of elasticity and elasto-plasticity. The comparison shows that the steel frame has good ductility And seismic performance. Finally, the applicable height range of steel flexural frame and the seismic performance of reinforced seismic frame are discussed.