某高层酒店采用框架核心筒结构,结构存在塔楼偏心布置、平面尺寸突变、竖向刚度不连续、平面凸凹不规则和楼板不连续等超限不规则项。采用基于性能目标的抗震设计方法,并对关键部位和构件提出抗震性能目标。利用SATWE和ETABS有限元软件,对结构进行了多遇地震作用下的弹性时程分析,设防地震作用下的楼板应力分析和罕遇地震作用下的静力弹塑性分析。计算结果表明:结构体系具有良好的承载能力和延性,实现了预先设定的性能目标。 A high-rise hotel adopts the framework core tube structure, which has overrun and irregular items such as eccentric layout of the tower, abrupt change in plane size, discontinuous vertical stiffness, irregular irregularities in the plane, and discontinuity in the floor. The seismic design method based on the performance target was adopted, and the seismic performance targets were put forward for key parts and components. Using SATWE and ETABS finite element software, the elastic time-history analysis of the structure under multiple earthquakes was performed. The stress analysis of the slab under the effect of earthquake prevention and the static elastoplastic analysis under the action of rare earthquake were performed. The calculation results show that the structural system has good bearing capacity and ductility and achieves the preset performance goals.