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（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）

［摘要］重慶市巴南區(qū)新建體育館鋼桁架屋蓋跨度為109-2m×126-0m，在大跨鋼屋蓋下方設(shè)置懸掛觀眾看臺(tái)屬國內(nèi)首創(chuàng)。對(duì)屋蓋雙向正交鋼桁架布置方案和四個(gè)圓角部位為徑環(huán)向鋼桁架、其他部位為雙向正交布置的鋼桁架布置方案進(jìn)行了經(jīng)濟(jì)性對(duì)比，最終確定采用后者，并分析了典型鋼桁架節(jié)點(diǎn)應(yīng)力。對(duì)懸掛看臺(tái)結(jié)構(gòu)體系、傳力途徑及構(gòu)件設(shè)計(jì)進(jìn)行了介紹，并重點(diǎn)針對(duì)多種人員激勵(lì)下懸掛看臺(tái)的豎向振動(dòng)峰值加速度進(jìn)行仿真分析，結(jié)果表明，懸掛看臺(tái)具有較好的舒適度水平。

［關(guān)鍵詞］重慶巴南新建體育館； 大跨度屋蓋； 鋼桁架； 懸掛看臺(tái)； 舒適度

中圖分類號(hào)：TU393-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)20-0112-04

Structural design of large-span steel roof and suspended stands of New Indoor Stadium of Banan District in Chongqing

Gao Ming, Jing Zhitao

(Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract:The steel truss roof of the New Indoor Stadium of Banan District in Chongqing spans  109-2m×126-0m space. It is the first in China to set up suspended stands under the large-span steel roof. The economic comparison between the two schemes was conducted, including a scheme with arrangement of two way orthogonal steel truss roof and a scheme with radial ring steel trusses at the four rounded corners and two way orthogonal steel truss roof in other part. Finally, the latter scheme was adopted and the stress of typical steel truss joints was analyzed. The structural system, force transmission way and component design of the suspended stands were introduced, and the vertical vibration peak acceleration of the suspended stands under the excitation of various personnel was simulated and analyzed. The results show that the suspended stands have a good comfortability level.

Keywords:New Indoor Stadium of Banan District in Chongqing; large-span roof; steel truss; suspended stand; comfortability

作者簡介：高鳴，碩士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：gaomingbj@163.com。