上海某医院上部结构抗震设计

Seismic design of a hospital above basement in ShangHai

上海某医院病房楼采用钢框架-钢筋混凝土剪力墙结构体系,楼盖及屋盖采用压型钢板与混凝土组合楼板。病房楼平面布置不规则,裙房上方缩进,竖向刚度变化大、扭转刚度较差,对抗震不利。经过判断,属于超限高层建筑。结构设计通过采用两种不同力学模型的软件,对结构主要指标进行了对比计算,并同时补充弹性时程分析、楼板应力分析以及罕遇地震作用下的静力弹塑性分析,根据分析结果可知该病房楼的抗震设计符合我国抗震规范要求。

A ward building of a hospital in shanghai was designed by using steel frame-reinforced concrete shear wall structure system. Profiled steel sheet-concrete composite floors have been used in its floor diaphragm and roof. The ward building had the disadvantage seismic performance because of its irregular plane arrangement,the top of podiums bounded back,vertical stiffness variation and poor torsional stiffness. After the judgement,it belonged to the super high building.In the procedure of structure design,For comparing the primary results,two different mechanical model softwares have been applied. Elastic time-history analysis,floor stress analysis and pushover analysis of the structure under rare earthquake action have been supplemented. It turned out that the aseismic design of this ward building got a good agreement with the code in China.