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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。
Cloud Crown Crown Hotel Lanzhou buckling constrained support framework - the core tube hybrid structure, is an overrun high-rise buildings. The characteristics of the project and the layout of the structure are introduced. According to the asymmetry of the layout of the structure and the height overrun, the elastic-plastic properties of the structure when the structure is supported by ordinary support and buckling restraint respectively are compared. The results show that under the action of small earthquake, the buckling restrained brace is in elastic state and provides the supporting stiffness for the structure. Under the action of rare earthquakes, the buckling restrained brace reaches the yielding state and provides energy dissipation for the structure. By using the buckling restraint support, not only the seismic response of the structure is reduced, but also the designed performance target and the requirements of the specification are met.