（中信建筑设计研究总院有限公司，  武汉 430014）

［摘要］武汉梦时代广场室内乐园为包含了急速过山车、旋转木马等大型游乐设备的超限项目，主体结构采用框架-剪力墙结构体系，基础采用平板式（带柱墩）筏板基础。结构存在扭转不规则、楼板不连续、局部不规则、多重复杂等超限项； 介绍了抗震性能化设计原则，并对结构进行罕遇地震动力弹塑性时程分析； 阐述了结构设计中的关键问题，如加强层刚度突变问题、大洞口楼板应力问题、大跨度钢-混凝土组合桁架设计、舒适度分析、跃层柱屈曲稳定分析。对加强层短柱及矮墙采取了加强措施，增强其在罕遇地震下的变形能力； 对大洞口周边楼板进行了有限元分析，根据罕遇地震下的楼板应力进行加强； 对跃层柱进行了线性屈曲分析、考虑罕遇地震作用的柱自身稳定承载力分析以及考虑几何初始缺陷的非线性分析，以保证跃层柱的稳定承载能力。

［关键词］武汉梦时代广场室内乐园；   大跨度钢-混凝土组合桁架；  加强层；  舒适度；  屈曲稳定分析

中图分类号：TU398-7文献标识码：A文章编号：1002-848X(2020)17-0040-06

Main structural design of Wuhan Dream Plaza Indoor Amusement Park

XIE Xianyi, LI Ping, QIU Jian, NIE Qiling

(Citic General Institute of Architectural Design and Research Co., Ltd., Wuhan 430014, China)

Abstract:Wuhan Dream Plaza Indoor Amusement Park is an out-of-code project including large-scale amusement equipment such as rapid roller coasters and merry-go-rounds. The main structure adopts frame-shear wall structure system, and the basic  adopts a flat plate (with pillar pier) raft foundation. The structure has out-of-limit items such as torsion irregularities, discontinuous floor slabs, partial irregularities and multiple complexities. The design principles of seismic performance were introduced, and dynamic elasto-plastic time history analysis under rare earthquakes were carried out. The key issues in the structural design were explained, such as the sudden change of the stiffness of the stiffener, the stress of the large opening floor, the design of the long-span steel-concrete composite truss, the comfort analysis and the buckling stability analysis of the jumper column. The reinforcement measures were taken for the reinforced short columns and low walls to enhance their deformation ability under rare earthquake. The finite element analysis of large opening floor slab was carried out, and the floor slab was strengthened according to the floor stress under rare earthquakes. The linear buckling analysis, the analysis of the stable bearing capacity of the column itself considering the effects of rare earthquakes, and the nonlinear analysis considering the geometric initial defects were carried out on the jumper column to ensure its stability bearing capacity.

Keywords:Wuhan Dream Plaza Indoor Amusement Park; long-span steel-concrete composite truss; strengthened story; comfortable degree; buckling stability analysis

作者简介：谢先义，硕士，高级工程师，一级注册结构工程师，Email:xxy10368639@163.com。