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(中國航空規(guī)劃建設(shè)發(fā)展有限公司, 北京 100120)
［摘要］盤錦游泳館是下部采用鋼筋混凝土框架結(jié)構(gòu)，屋蓋、外圍兩圈V形柱及坡道采用鋼結(jié)構(gòu)的復(fù)雜結(jié)構(gòu)。結(jié)構(gòu)的主要抗側(cè)力構(gòu)件除框架結(jié)構(gòu)的鋼筋混凝土柱外，還包括外圍兩圈鋼結(jié)構(gòu)V形柱。鋼結(jié)構(gòu)屋蓋跨度為66.6m，主桁架下弦由兩根圓管組成,其側(cè)向穩(wěn)定性主要靠兩個十字交叉索保證。對基礎(chǔ)、下部鋼筋混凝土框架結(jié)構(gòu)、上部鋼結(jié)構(gòu)的設(shè)計(jì)分別進(jìn)行了闡述，并對結(jié)構(gòu)進(jìn)行了抗震分析、對鋼結(jié)構(gòu)進(jìn)行了穩(wěn)定驗(yàn)算及對節(jié)點(diǎn)進(jìn)行了有限元分析。分析表明，合理的結(jié)構(gòu)布置可使得結(jié)構(gòu)整體抗震性能良好；下弦由兩根圓管組成的單榀桁架相比普通單榀桁架穩(wěn)定性能更優(yōu)；單榀桁架間設(shè)置交叉穩(wěn)定索的柔性支撐體系能夠保證整個屋蓋結(jié)構(gòu)的整體穩(wěn)定。
［關(guān)鍵詞］盤錦游泳館； 混合結(jié)構(gòu)； 鋼桁架； 雙下弦
中圖分類號：TU318文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2016)11-0050-05
Structural design of Panjin Natatorium
Jing Hui， Wang Yaman， Liu Yin， Jia Jie
（China Aviation Planning and Construction Development Co., Ltd., Beijing 100120, China）
Abstract:The Panjin Natatorium is a composite structure which is composed of reinforced concrete frame structure and steel roof, the outer two circles of V-shaped steel columns and steel ramp. The two rows of V-shaped steel columns are main components to resist later force beside the frame concrete columns. Steel structure roof has the largest span of 66.6m, the lower chords of the main steel truss are two circular steel tubes, and the lateral stability of the main truss depends on two cross cables. Designs were described respectively for the foundation, concrete frame structure and the steel structure. Structural seismic analysis was carried out as well as stability calculation of steel structure and the finite element analysis on the joints. Results shows that the reasonable structure system can ensure the anti-seismic ability of the overall structure. And the truss whose chords are composed of two circular steel tubes has better stability than ordinary truss. Flexible supporting system with cross stable cable arranged between different pieces of trusses can ensure the overall stability of the whole roof structure.
Keywords:Panjin Natatorium; hybrid structure; steel truss; double lower chords
作者簡介：景輝，碩士，研究員，一級注冊結(jié)構(gòu)工程師， Email: lojhve@126.com。
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