(中国中元国际工程有限公司， 北京 100089)

［摘要］某工程采用钢管混凝土柱、钢梁、钢筋桁架楼承板、钢筋混凝土剪力墙组成的混合框架剪力墙结构体系，由于建筑使用功能和客观条件的限制，结构存在扭转不规则、偏心布置、凹凸不规则、楼板不连续等特点；此外，建筑还在多处采用了穿层柱、托柱转换梁、斜柱转换等结构形式，属于体型不规则的超限高层结构。对结构的不规则特性采取了一系列的抗震性能化设计措施，结构按整体模型和切块模型进行包络设计，并对结构整体进行了罕遇地震作用下动力弹塑性分析，利用ANSYS对复杂节点的承载力进行了有限元分析。计算结果表明，结构设计可靠，满足预期的抗震性能目标。

［关键词］超限高层建筑； 抗震性能化设计； 包络设计； 动力弹塑性分析； 有限元分析

中图分类号：TU972+.9文献标识码：A文章编号：1002-848X(2020)05-0066-05

Structural design and analysis of an out-of-code high-rise building

Wang Yu, Shu Tianming, Zu Qing

(China IPPR International Engineering Co., Ltd., Beijing 100089, China)

Abstract:A mixed frame shear wall structural system composed of concrete-filled steel tubular column, steel beam, steel bar truss deck  and reinforced concrete shear wall was used in a project. Due to the limitations of the building′s function and objective conditions, the structure had the characteristics of irregular torsion, eccentric layout, irregular concave convex and discontinuous floor slab. In addition, the structural forms such as cross-layer column, supporting column transfer beam and inclined column transfer were also used in the building, and it belonged to a kind of out-of-code high-rise structure with irregular shape. A series of performance-based seismic design measures were taken for the irregular characteristics of the structure. The envelope design of the structure was carried out based on the whole model and the block model, and the dynamic elasto-plastic analysis of the whole structure under the rare earthquake was carried out, and the finite element analysis of the bearing capacity of the complex joint was carried out by using ANSYS. The calculation results show that the structural design is reliable and meets the expected seismic performance targets.

Keywords:out-of-code high-rise building; performance-based seismic design; envelope design; dynamic elasto-plastic analysis; finite element analysis