【摘要】 兰州云天皇冠酒店为屈曲约束支撑框架-核心筒混合结构,属超限高层建筑。介绍了工程的特点及结构布置情况,针对结构平面布置不对称和高度超限的情况,对比了结构分别采用普通支撑和屈曲约束支撑时的弹塑性性能。结果表明,在小震作用下,屈曲约束支撑处于弹性状态,为结构提供支撑刚度;在罕遇地震作用下,部分屈曲约束支撑达到屈服状态,为结构提供耗能能力。通过采用屈曲约束支撑,既减轻了结构地震反应,又达到设计的预期性能目标且满足规范的要求。更多还原

【Abstract】 Lanzhou Yuntian Huangguan Hotel is a super-high hybrid structure with buckling-restrained braces(BRB) and it ranks the high-rise building beyond code limits.The characteristics and structural arrangement were introduced.The influences of BRB and conventional braces on the structure were analyzed.The results show that when subjected to frequent earthquake,the BRB are still in elastic state,and can provide stiffness for the main structure.When subjected to rare earthquake,a number of BRB are in post-yielding state,and can provide the additional energy dissipation capacity for the main structure.The results also show that the BRB work as an anti-lateral force component in elastic phase and as an energy dissipation member in plastic phase.The work state and performance of the structure with BRB can meet the design goals of performance and satisfy criterion requirements.更多还原