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（同濟(jì)大學(xué)建筑工程系  上海 200092）
【提要】  通過(guò)上海旗忠網(wǎng)球中心預(yù)制預(yù)應(yīng)力混凝土看臺(tái)空間結(jié)構(gòu)1∶15縮尺模型的施工全過(guò)程測(cè)試與有限元模擬分析，對(duì)該結(jié)構(gòu)的施工關(guān)鍵技術(shù)進(jìn)行了系統(tǒng)的試驗(yàn)與理論研究。研究表明，所采用的預(yù)制預(yù)應(yīng)力混凝土空間結(jié)構(gòu)施工技術(shù)是合理的；預(yù)制試件時(shí)須重視預(yù)應(yīng)力筋孔道的定位及張拉端和固定端的混凝土澆筑質(zhì)量，并保證有足夠的張拉空間；應(yīng)采用對(duì)稱張拉的預(yù)應(yīng)力施工方案，結(jié)構(gòu)受力均勻，易滿足設(shè)計(jì)和施工要求；按照建議的施工技術(shù)所建造的預(yù)制預(yù)應(yīng)力混凝土空間結(jié)構(gòu)具有良好的整體性能。
【關(guān)鍵詞】  預(yù)制預(yù)應(yīng)力混凝土  空間結(jié)構(gòu)  施工技術(shù)  試驗(yàn)  有限元分析
Study on Construction Technology of Large Precast Prestressed Concrete Space Structure/Xue Weichen，Xu Zhuangtao，Jiang Dongsheng，Chen Yiyi （Department of Building Engineering，Tongji Univ.，Shanghai 200092，China）
Abstract:Based on fullrange test and FEM analysis on the construction of a model structure，which simulates the stand structure of Shanghai Qizhong tennis in the proportion of 1∶15，the experimental and theoretical studies on key construction techniques of the structure are carried out. The results indicate that the construction techniques applied in the structure are rational；the exact orientation of the prestressed tendon ducts and the good casting quality of concrete in the stretching and anchoring zone should be ensured；the distributions of stresses in the structure are of uniformity and the requirements of design and construction could easily be satisfied when the tendons are stretched symmetrically；the precast prestressed concrete spacial structure，which is constructed by using the techniques studied，has better performance.
Keywords:precast prestressed concrete；spacial structure；construction technique；test；FEM analysis
*上海市重點(diǎn)工程科研項(xiàng)目。