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唐文亨 廖小健 張桂艷 謝飛躍
（衡陽市建筑設(shè)計研究院 421001）[提要] 介紹16m跨高層建筑轉(zhuǎn)換層結(jié)構(gòu)采用預(yù)應(yīng)力混凝土桁架的設(shè)計與施工，提出了空間結(jié)構(gòu)轉(zhuǎn)換層和轉(zhuǎn)換層結(jié)構(gòu)與上部框架形成共同受力體系的結(jié)構(gòu)構(gòu)思，并分析了結(jié)構(gòu)剛度的形成和對結(jié)構(gòu)內(nèi)力的影響。對預(yù)應(yīng)力束的張拉次數(shù)、時期和桿件張拉順序進(jìn)行了分析研究，提出了擇期一次不對稱偏心張拉到位的施工方法。
[關(guān)鍵詞] 大跨度 預(yù)應(yīng)力混凝土桁架 空間轉(zhuǎn)換層 受力體系 張拉 不對稱偏心張拉This paper introduces the structural design and construction of transfer storey of high-rise building with 16-meter span prestressed concrete truss, and puts forward an idea of space structural transfer storey, which forms a whole force-bearing system with super-frame. The formation of structural stiffness and its effect on the inner force, along with the numbers, time and order of prestressed steel tension, construction method of time-choosing unsymmetrical off-center tension at the same time are analysed.
Keywords: large span; prestressed concrete truss; space structural transfer storey; force-bearing system; tension: tlme; unsymmetrical off-center tension
