第十届花卉博览会场馆—百花馆(花艺馆)结构设计与分析

Structural design of The 10^(th) China Flower Expo indoor exhibition-Flower Hall

以上海市崇明区第十届花卉博览会场馆—百花馆(花艺馆)为例,介绍了超大长宽比“梭形”平面结构特性、设计要点及加强措施,并对钢支撑、大悬挑雨棚、跃层柱、轻质屋面等关键构件进行重点分析与设计。为准确计算穿层柱受力情况,采用了线弹性屈曲分析的方法确定跃层柱无约束侧的计算长度系数。此外进行了罕遇地震作用下的动力弹塑性分析,分析结果表明各关键构件具有良好的抗震性能,整体结构能够满足根据“三水准”的抗震设防性能化分析的原则确定的抗震设防各阶段的性能化目标。

Taking the exhibition of The 10^(th)China Flower Expo indoor exhibition-Flower Hall in Shanghai’s Chongming District as an example, this paper introduces the characteristics, design points and strengthening measures of the super-large aspect ratio “fuzzy” plane structure. Key components such as steel supports, large cantilevered canopies,columns through stories,lightweight roofs are analyzed and designed.In order to accurately calculate the stress of the through-layer column, the method of linear elastic buckling analysis is used to determine the calculated length coefficient of the unconstrained side of the through-layer column. In addition, dynamic elastoplastic analysis under rare earthquake action is carried out.The results show that each key component has good seismic performance, and the overall structure can meet the performance-based objectives of seismic fortification at each stage determined according to the principle of "three-level" seismic fortification performance-based analysis.