(1 中信建筑设计研究总院有限公司， 武汉 430014；2 武汉地产开发投资集团有限公司， 武汉 430022)

［摘要］琴台美术馆的下部结构采用板柱-剪力墙结构，上部屋盖采用仿山地地形的自由曲面混凝土壳体结构，屋盖壳体同时采用了密肋梁板和实心板2种结构形式。全面介绍了琴台美术馆的结构布置特点和采用的计算分析手段，对屋盖受力变形性能进行了详细分析，重点介绍了2个方面的内容：1）中央穹顶的受力性能和设计；2）支撑屋盖的细长钢骨圆柱的受力性能和设计。计算分析结果表明：针对跨厚比较大的板壳穹顶和细长钢骨圆柱，应采用考虑混凝土开裂的刚度折减模型进行二阶弹性分析和承载力复核，以确保结构安全可靠。 

［关键词］琴台美术馆； 自由曲面；混凝土壳体；穹顶；细长钢骨圆柱；刚度折减 

中图分类号：TU375 文献标识码：A文章编号：1002-848X(2021)14-0026-08

Structural analysis and design of the Qintai Art Museum 

HE  Xiaohui1,  WANG  Xin1,  WEN  Siqing1,  CHEN  Tao2,  HUANG  Cheng2,  DU  Kang2 

(1 CITIC General Institute of Architectural Design and Research Co., Ltd., Wuhan 430014， China；2 WuHan Realestate Group Co., Ltd., Wuhan 430022， China) 

Abstract:The lower structure of Qintai Art Museum adopts a slab-column shear wall structure, and the upper roof adopts a free form surface concrete shell structure similar to the mountain, in which the two structural forms of ribbed beam slab and solid slab are used meantime. The structural layout characteristics of Qintai Art Museum  and the calculation and analysis methods adopted were comprehensively introduced, and the mechanical deformation performance of the roof was also analyzed in detail. Two aspects were mainly presented: 1) the mechanical performance and design of the central dome; 2) the mechanical performance and design of the slender steel reinforced concrete (SRC) circular column supporting the roof. The calculation and analysis results show that the second order elastic analysis considering the stiffness reduction model due to concrete cracking should be done for the the shell dome with large ratio of thickness to span and the slender SRC circular column, which further used to check the bearing capacity and ensure the safety and reliability of the structures.  

Keywords: Qintai Art Museum; free form surface； concrete shell； dome； slender steel reinforced concrete circular column； stiffness reduction

作者简介：何小辉，博士，高级工程师，Email：netboyhxh@163.com。