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1 概述 黄龙体育中心主体育场外环梁是悬索挑篷屋面结构的主要支承构件,承载屋盖重量、风雪活荷载和稳定索张力,全长781m,断面2800～3080mm×2200mm,系后张预应力钢筋混凝土空腹箱梁。它的墙肢厚750～450mm,底板、顶板厚450～250mm,内侧有支承钢网架支座的牛腿。外环梁平面投影为圆形,空间是曲线,属超长大断面结构,内配后张有粘结预应力钢绞线15～25束,每束由7(?)~j15.24钢绞线组成,钢绞线强
1 Overview The main stadium of the main stadium of Huanglong Sports Center Outer Ring Beam is the main supporting component of roof suspension roof, carrying the roof weight, snow load and stable cable tension, a total length of 781m, section 2800 ~ 3080mm × 2200mm, Prestressed reinforced concrete box girder. Its wall thickness 750 ~ 450mm, floor, roof thickness 450 ~ 250mm, the inner side of the support steel legs support the legs. The outer ring beam plane projection is circular, the space is a curve, is an extra long section structure, with a post-Zhang bonded bonded prestressed strand 15 ~ 25 beams, each beam from 7 (?) ~ J15.24 steel Line composition, strong strand