防屈曲支撑在高烈度区医院建筑中的应用

Application of buckling restrained brace in the hospital building in high-intensity area

某高烈度区医院需要有大空间手术室且分散分布,造成结构复杂,设计指标难以达到要求,且构件截面过大。通过Pushover静力弹塑性分析,对比分析了普通支撑结构体系和防屈曲支撑体系,分析结果表明采用防屈曲支撑能使梁柱截面大大减小,层间位移和扭转满足要求;防屈曲支撑在大震下不会受压退出工作,可提供稳定的承载力和耗能能力;采用防屈曲支撑方案,可降低总造价,增加建筑使用面积。

A six-storey framework hospital building design of high-intensity areas was explored,for hospital building features-requiring large operating room and scattered distribution.Buckling restrained brace system is more appropriate than other systems,of which the advantages and disadvantages of several structural systems were analyzed.By Pushover static analysis,a comparative analysis between the general support structure system and buckling restrained brace system was carried out,and the results show that the beam cross-section can be greatly reduced,and the displacement and reverse can meet the specification.Meanwhile,buckling restrained brace will not quit working under big earthquake,and can improve the seismic performance of structures.Using of buckling restrained brace,which has a wide range of application,can reduce the total cost and increase building usable area.