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（中國(guó)建筑西北設(shè)計(jì)研究院有限公司， 西安 710018）

［摘要］南陽市博物館、圖書館項(xiàng)目為大底盤多塔連體復(fù)雜結(jié)構(gòu)。博物館、圖書館均采用帶支撐的鋼筋混凝土框架結(jié)構(gòu)，結(jié)構(gòu)底部大底盤平面超長(zhǎng)，各單塔結(jié)構(gòu)存在樓面大開洞、錯(cuò)層、外周設(shè)大傾角斜柱等不規(guī)則情況；博物館與圖書館頂部設(shè)置大跨異形空間連體鋼結(jié)構(gòu)，采用一端剛接一端彈性連接，其受力及節(jié)點(diǎn)構(gòu)造均較復(fù)雜。針對(duì)工程特點(diǎn)，重點(diǎn)探討了結(jié)構(gòu)布置、構(gòu)造措施、性能目標(biāo)、多模型包絡(luò)計(jì)算及鋼結(jié)構(gòu)變形及應(yīng)力分析等方面采取的應(yīng)對(duì)措施，并對(duì)結(jié)構(gòu)進(jìn)行了彈性時(shí)程分析及靜力彈塑性推覆（Pushover）分析等補(bǔ)充驗(yàn)算。結(jié)果表明，結(jié)構(gòu)整體設(shè)計(jì)滿足設(shè)定的性能目標(biāo)及現(xiàn)行國(guó)家規(guī)范的相關(guān)要求。

［關(guān)鍵詞］大底盤； 多塔； 連體結(jié)構(gòu)； 異形空間鋼桁架

中圖分類號(hào)：TU318文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)15-0071-06

Structural design of Nanyang Museum and Library

Wang Weifeng， Wu Kun， Ma Xiaoyu

（Northwestern Architectural Design Institutes Company Ltd.， Xi′an 710018， China）

Abstract:Nanyang Museum and Library project is a multi-tower connected structure with the large chassis. The museum and the library are all reinforced concrete frame structure with braces. The length of the large chassis plane at the structure bottom is over limit, and there are irregular conditions in each single tower structure, such as floors with large opening, staggered floors and inclined columns with large dip angle on the periphery. The museum and the library are connected on their roofs by a long-span special-shaped space steel structure, which adopts rigid connection at one end and elastic connection at the other end, with complex stress and node structure. According to the characteristics of the project, the measures adopted in structural layout, construction measures, performance objectives, multi-model envelope calculation and deformation and stress analysis of the steel structure were discussed in detail, and supplementary checking calculation such as the elastic time history analysis and the static pushover analysis were also carried out. The results show that the overall design of the structure meets the requirements of the performance objectives and the relevant requirements of the current national standards.

Keywords:large chassis; multi-tower; connected structure; special-shaped space steel truss

作者簡(jiǎn)介：王偉鋒，學(xué)士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email: 2410064075@qq.com。