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（甘肅省建筑設(shè)計研究院， 蘭州 730030）
［摘要］甘肅省體育館由比賽館和訓(xùn)練館組成，比賽館具有平面尺寸大、內(nèi)部空曠、屋頂?shù)鯍旌奢d分布廣的特點。對該工程結(jié)構(gòu)設(shè)計中的關(guān)鍵技術(shù)問題進(jìn)行了介紹，主體結(jié)構(gòu)選用鋼筋混凝土框架結(jié)構(gòu)，內(nèi)場上空屋蓋選用鋼桁架結(jié)構(gòu)，桁架支座選用可滑動彈性抗震球形鉸支座，休息廳選用懸掛結(jié)構(gòu)。主桁架為平面桁架，考慮到建筑功能的可變通性，設(shè)計時計入了均布吊掛荷載和固定吊掛荷載，通過穩(wěn)定桁架和次梁的設(shè)置，對主桁架起到了較好的約束作用。穩(wěn)定分析表明，桁架失穩(wěn)時僅產(chǎn)生節(jié)間的桿件失穩(wěn)，不會發(fā)生整體失穩(wěn)。建設(shè)場地具有Ⅱ～Ⅳ級自重濕陷性，采用了強夯消除部分濕陷性+樁基礎(chǔ)的綜合方案，兼顧了可靠性和經(jīng)濟(jì)性。
［關(guān)鍵詞］甘肅省體育館； 鋼桁架； 懸掛結(jié)構(gòu)； 濕陷性黃土； 超長結(jié)構(gòu)
中圖分類號：TU318文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)02-0001-06
Structural design and analysis on the competition hall of Gansu Stadium
Zhang Jutao, Rui Jia, Zhang Xiaofang, Zheng Shijun, Qiao Shuaibin, Zhang Haoqiang, Jiang Chongyang, Wang Dong
(Gansu Architectural Design and Research Institute, Lanzhou 730030， China)
Abstract:Gansu Stadium is composed of the competition hall and the training hall. The competition hall has large flat size, open interior space and wide distribution of suspended roof load. The key technical issues for structural design were introduced, the main structure adopts reinforced concrete frame structure, the large span roof adopts steel truss structure with sliding elastic seismic spherical hinge bearing, and the lounge adopts suspended structure. The main truss adopts planar truss which is well constrained by the stabilizing truss and secondary beams. In order to meet the variable architectural features, both the uniform suspended load and fixed suspended load were considered. Therefore, the structural stability analysis indicates that the truss instability occurs on single member between rod section instead of overall instability. Construction site has Ⅱ～Ⅳ stage wet collapsible property, the dynamic compaction was used to eliminate partial collapsible property and pile foundation was adopted as a integrated program to ensure the reliability and economy.
Keywords:Gansu Stadium; steel truss; suspension structure; collapsible loess; ultra long structure
作者簡介：張舉濤，碩士，正高級工程師，一級注冊結(jié)構(gòu)工程師，Email：zhjut@126.com。
