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(華東建筑設(shè)計研究院有限公司 上海 200002)
［提要］ 青島國際會展中心二期工程由展廳、會議中心兩個建筑單體組成。介紹了青島國際會展中心二期工程中超長連續(xù)預(yù)應(yīng)力梁的設(shè)計方案，著重就豎向構(gòu)件側(cè)向剛度對梁預(yù)應(yīng)力效應(yīng)的影響、各種張拉方案進行了分析比較；并對結(jié)構(gòu)中大面積樓蓋溫度應(yīng)力的大小、分布規(guī)律進行研究，分析過程中考慮了溫度荷載的確定、豎向構(gòu)件側(cè)向剛度、徐變等主要因素的影響，最后提出相應(yīng)的預(yù)應(yīng)力設(shè)計方案。
［關(guān)鍵詞］ 超長連續(xù)預(yù)應(yīng)力梁 側(cè)向剛度 張拉方案 大面積樓蓋 溫度應(yīng)力 徐變
Prestress Design of Qingdao International Convention Center Phase Ⅱ/Lu Daoyuan, Lu Yiming, Xu Lin(East China Architectural Design & Research Institute Co.,Ltd.,Shanghai 200002,China)
Abstract:Qingdao International Convention Center includes exhibition and conference center. The design of overlength continous prestress beam, the influence of vertical member rigidity, and comparison of several stretching schemes are presented. Then, based on the thermal stress and its distributed regulation of large area floor，several details, such as tempture load, lateral rigidity of vertical structure member are given. The relevant prestress scheme is put forward.
Keywords:overlength continous prestress beam; lateral rigidity; prestress scheme; large area floor; thermal stress; creep
