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(1 中信建筑設(shè)計研究總院有限公司， 武漢 430014；2 武漢地產(chǎn)開發(fā)投資集團(tuán)有限公司， 武漢 430022)
［摘要］琴臺美術(shù)館的下部結(jié)構(gòu)采用板柱-剪力墻結(jié)構(gòu)，上部屋蓋采用仿山地地形的自由曲面混凝土殼體結(jié)構(gòu)，屋蓋殼體同時采用了密肋梁板和實心板2種結(jié)構(gòu)形式。全面介紹了琴臺美術(shù)館的結(jié)構(gòu)布置特點和采用的計算分析手段，對屋蓋受力變形性能進(jìn)行了詳細(xì)分析，重點介紹了2個方面的內(nèi)容：1）中央穹頂?shù)氖芰π阅芎驮O(shè)計；2）支撐屋蓋的細(xì)長鋼骨圓柱的受力性能和設(shè)計。計算分析結(jié)果表明：針對跨厚比較大的板殼穹頂和細(xì)長鋼骨圓柱，應(yīng)采用考慮混凝土開裂的剛度折減模型進(jìn)行二階彈性分析和承載力復(fù)核，以確保結(jié)構(gòu)安全可靠。
［關(guān)鍵詞］琴臺美術(shù)館； 自由曲面；混凝土殼體；穹頂；細(xì)長鋼骨圓柱；剛度折減
中圖分類號：TU375 文獻(xiàn)標(biāo)識碼：A文章編號：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
作者簡介：何小輝，博士，高級工程師，Email：netboyhxh@163.com。
