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（深圳市建筑設(shè)計(jì)研究總院有限公司合肥分院，合肥 230061）

［摘要］合肥交通銀行多功能廳平面呈類橢圓形，2層平臺(tái)以上屋蓋采用大跨度三角鋼管桁架結(jié)構(gòu)（跨度40～53m），沿徑向均勻設(shè)置24榀三角鋼管桁架，桁架匯交于中心加強(qiáng)環(huán)。針對(duì)該工程結(jié)構(gòu)方案的比較、建模分析等關(guān)鍵問(wèn)題進(jìn)行探討，包括主桁架、環(huán)桁架、中心加強(qiáng)環(huán)等關(guān)鍵構(gòu)件的計(jì)算分析、關(guān)鍵節(jié)點(diǎn)的設(shè)計(jì)與構(gòu)造。采用將鋼屋蓋置于混凝土平臺(tái)的方案，運(yùn)用應(yīng)變能阻尼比計(jì)算方法實(shí)現(xiàn)鋼-混組合結(jié)構(gòu)阻尼比的正確計(jì)算，同時(shí)補(bǔ)充重要支座節(jié)點(diǎn)的有限元分析。整體計(jì)算結(jié)果表明，本工程鋼屋蓋及支座具有較好的剛度及穩(wěn)定性。

［關(guān)鍵詞］合肥交通銀行； 三角鋼管桁架； 中心加強(qiáng)環(huán)； 環(huán)桁架； 支座球節(jié)點(diǎn)

中圖分類號(hào)：TU318，TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)22-0036-06

Steel structure design on multifunction hall of Hefei Bank of Communications

Qian Jiehuang， Song Yong， Fang Xin

(Shenzhen General Institute of Architectural Design and Research Co., Ltd., Hefei Branch， Hefei 230061, China)

Abstract:The multifunction hall of Hefei Bank of Communications has an oval-like shape. The roof above the platform at second floor adopts large-span triangular steel tube truss structure with span of 40～53m. There are 24 pieces of triangular steel tube trusses uniformly arranged along the radial direction, and trusses converge on the center reinforcement ring. The key problems were discussed including structural scheme comparison of the project, modeling analysis. The calculation and analysis of the key components and design and construction of the key nodes were conducted including the main truss, belt truss and central reinforcement ring. By using the scheme of putting steel roof above the concrete platform, strain energy damping ratio calculation method was used to realize correct calculation of the damping ratio of the steel-concrete composite structure. And the finite element analysis of the important bearing nodes was also added. The whole calculation results show that the steel roof and bearing of the project have better rigidity and stability.

Keywords:Hefei Bank of Communications; triangular steel tube truss; center reinforcement ring; belt truss; ball bearing node

作者簡(jiǎn)介：錢(qián)解煌，碩士， 一級(jí)注冊(cè)結(jié)構(gòu)工程師， Email：270181901@qq.com。