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（悉地國(guó)際設(shè)計(jì)顧問(wèn)（深圳）有限公司， 深圳 518057）

［摘要］簡(jiǎn)上體育綜合體項(xiàng)目高54m，垂直疊加多種功能的體育活動(dòng)場(chǎng)館，通過(guò)沿東側(cè)及南側(cè)疊落退讓，形成塊體穿插的建筑造型。針對(duì)這個(gè)特殊的建筑體型及功能要求，結(jié)構(gòu)設(shè)計(jì)采用多筒體支承的大跨空間桁架結(jié)構(gòu)，利用筒體間桁架將上部3～5層重力荷載傳遞至落地筒體。6個(gè)鋼筋混凝土筒體由多榀大跨桁架連成整體，通過(guò)樓蓋的協(xié)同作用，共同抵抗水平力。重點(diǎn)介紹了結(jié)構(gòu)體系與結(jié)構(gòu)設(shè)計(jì)理念、多筒體的協(xié)同效應(yīng)分析、抗連續(xù)倒塌的合理確定及模擬。提出了大跨體育館的舒適度設(shè)計(jì)標(biāo)準(zhǔn)及加強(qiáng)措施；進(jìn)行了節(jié)點(diǎn)設(shè)計(jì)研究提供結(jié)構(gòu)在各種作用下的工作性能。

［關(guān)鍵詞］多筒體支承； 多筒體協(xié)同效應(yīng)； 抗連續(xù)倒塌； 舒適度設(shè)計(jì)； 節(jié)點(diǎn)設(shè)計(jì)

中圖分類號(hào)：TU393-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)01-0019-07

Structural design and research of multi-tube supported large-span space truss

LI Jianwei, ZHAO Yong, YANG Binbin, WANG Ning

(China Construction (Shenzhen) Design International, Shenzhen 518057, China)

Abstract:The Jianshang Sports Complex project is 54m high, and is a sports venue vertically stacked with multiple functions. By stacking and retreating along the east and south sides, it forms an architectural shape interspersed with blocks. In response to this special building shape and functional requirements, the structural design adopts a multi-tube supported large-span space truss structure, and uses the inter-tube truss to transmit the gravity load of the upper 3～5 floors to the floor-standing tube. The six reinforced concrete tubes are connected as a whole by multiple pieces of large-span trusses, and they jointly resist horizontal forces through the synergy of the floor slab. The structural system and structural design concept were mainly introduced. Synergistic effect analysis was conducted of multi-tubes; reasonable determination and simulation of anti-progressive collapse were conducted; the comfort design standard and strengthening measure of the large-span sports venue were put forward; research was conducted on joint design and structure performance under various working conditions were analyzzed.

Keywords:multi-tube support; multi-tube synergistic effect; anti-progressive collapse; comfort design; joint design