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(北京市建筑設(shè)計(jì)研究院7S1工作室 100045)
【提要】 合肥體育中心跨度大、造型獨(dú)特，對結(jié)構(gòu)設(shè)計(jì)提出了一些特殊要求，如大平臺的抗裂，大懸挑鋼結(jié)構(gòu)風(fēng)振的被動控制、大跨預(yù)應(yīng)力鋼桁架的設(shè)計(jì)及如何實(shí)現(xiàn)鋼結(jié)構(gòu)的輕巧等。在網(wǎng)架開口邊的桁架梁里設(shè)置阻尼器，減弱由于風(fēng)振引起的效應(yīng)，減小了開口邊的厚度。經(jīng)過計(jì)算及試驗(yàn)，在風(fēng)荷載作用下能減少35%的位移。在屋脊主桁架中施加預(yù)應(yīng)力，有利于鋼結(jié)構(gòu)的施工起拱，加大了屋蓋剛度，減小了弦桿管徑及壁厚，降低了用鋼量。介紹了合肥綜合館的基礎(chǔ)設(shè)計(jì)、混凝土主體設(shè)計(jì)、風(fēng)洞試驗(yàn)及大跨空間鋼屋蓋的設(shè)計(jì)。
【關(guān)鍵詞】 結(jié)構(gòu)設(shè)計(jì) 風(fēng)洞試驗(yàn) 空間鋼屋蓋
Application of Vibration Reduction and Large Span Prestress Technology in Hefei Gym Center Engineering/Zhu Xinggang,Yang Zheng,Chen Lin(Beijing Institute of Architectural Design,Beijing 100045,China)
Abstract:Because of the large span and particular shape of the Hefei gym center,some special demands are required such as the anticrack of the large plate,vibration controlling of large cantilever structure,design of large span prestress steel truss aiming at legerity. The damper is used in the truss beam and the wind load effect is diminished.The prestress is applied in the roof fastigium main truss and the roof rigidity is increased.The foundation design,concrete main structure deisgn,wind tunnel test and space steel roof design ar
e introduced.
Keywords:structural design; wind tunnel test; space steel roof
*北京市建筑設(shè)計(jì)研究院發(fā)展基金資助項(xiàng)目(FJW200412)；獲2005年度北京市科技進(jìn)步獎。