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(1 華南理工大學(xué)建筑設(shè)計(jì)研究院，廣州 510641； 2 哈爾濱工業(yè)大學(xué)土木工程學(xué)院，哈爾濱 150090)

［摘要］給出了2010年廣州亞運(yùn)會(huì)排球館預(yù)應(yīng)力大梁的布置，定量比較了相距3m的兩榀框架梁底設(shè)板連成箱形截面前、后，兩根大梁豎向變形的均勻性、大梁的側(cè)向變形、大梁兩側(cè)有高差且不等跨次梁的豎向變形、梁端負(fù)彎矩等變化。針對(duì)大梁長(zhǎng)跨與短跨相連時(shí)短跨范圍內(nèi)負(fù)彎矩迅速衰減以及短跨內(nèi)曲線(xiàn)預(yù)應(yīng)力筋摩擦損失大的情況，給出了該大梁預(yù)應(yīng)力筋線(xiàn)型的布置方案。同時(shí)給出了預(yù)應(yīng)力大梁的材料及工藝選擇，預(yù)應(yīng)力筋的選配，非預(yù)應(yīng)力筋的確定，大梁裂縫、撓度驗(yàn)算等計(jì)算分析的過(guò)程。

［關(guān)鍵詞］預(yù)應(yīng)力混凝土；箱形截面；預(yù)應(yīng)力筋線(xiàn)型；預(yù)應(yīng)力損失；高差；設(shè)計(jì)

Design of the large-span prestressed box beam of volleyball gymnasium for Guangzhou 2010 Asian Games

Xie Shu¹, Zhou Wei², Lei Wenjun¹, Xu Mingxin¹(1 Architectural Design and Research Institute, South China University of Technology, Guangzhou 510641, China; 2 School of Civil Engineering，Harbin Institute of Technology, Harbin 150090, China)

Abstract:Laying-out of the prestressed girders of the volleyball gymnasium  for Guangzhou 2010 Asian Games was presented. Whether or not joining up two girders of the two frame whose distance being 3 meters to box with slab at bottom of the girders, it was quantitatively compared that the diversity of vertical and horizontal deformation of the two girders, vertical deformation and negative moment of unequal spans secondary beams on the different height at each side of the girders and so on. For reducing rapidly of moment at short span continuing to long span of girder and friction loss of curvaceous prestressing tendon being big, profile of prestressing tendon in the girder was given. At the same time, calculation and analysis processes for the girder of material and prestressing technics selection, determining of prestressing tendon and nonprestressing reinforcement, checking for crack and deflection etc. were given.

Keywords:prestressed concrete; box section; prestressing