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(北京市建筑設(shè)計(jì)研究院，100045)

［提要］結(jié)合在2004至2005年所設(shè)計(jì)的國家體育總局訓(xùn)練局的舉重籃球訓(xùn)練館跨度30m的預(yù)應(yīng)力大梁設(shè)計(jì)實(shí)踐，重點(diǎn)總結(jié)了應(yīng)用現(xiàn)有結(jié)構(gòu)計(jì)算手段完成大跨度預(yù)應(yīng)力梁結(jié)構(gòu)方案設(shè)計(jì)的經(jīng)驗(yàn)，結(jié)合施工中遇到的問題提出了合理設(shè)計(jì)預(yù)應(yīng)力張拉順序，改變截面形式來控制梁的裂縫和撓度的解決辦法。對(duì)完工后工程進(jìn)行現(xiàn)場實(shí)測，數(shù)據(jù)為今后相關(guān)工程的設(shè)計(jì)實(shí)踐提供指導(dǎo)。

［關(guān)鍵詞］體育館，預(yù)應(yīng)力，后張法，30m跨大梁

Design and Construction of the 30m span Post tensioned Boned Prestressed Concrete Beam in Gymnasium of Weight Lifting and Basketball of NSTC/Qin Yang，Zong Hai (Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract: According to the design of 30m-span beam of gymnasium of weight lifting and basketball of National Sports Training Center(NSTC) in 2004 and 2005, the design of a long-span post-tensioned boned prestressed concrete beam is analyzed by existing calculate method. The appropriate solutions to some problems that have been occurred during such a construction are given. The data that has been gathered from the gymnasium construction after its completion is analyzed, in oreer to provide some practical solutions for future design in similar constructions.

Keywords: gymnasium; prestress; post tensioned method; 30m-span concrete beam