- 摘 要
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(北京市建筑工程研究院 北京 100039)(北京市建筑設(shè)計研究院 北京 100045)
［提要］ 國家大劇院的水池結(jié)構(gòu)屬于超長結(jié)構(gòu)，對超長水池結(jié)構(gòu)的溫度應(yīng)力問題，除考慮了在配筋中增加普通溫度鋼筋，在混凝土材料中添加微膨脹劑和設(shè)置后澆帶解決混凝土的收縮徐變等幾種措施外,主要是采用了預(yù)應(yīng)力的方法控制變形和抑制裂縫的產(chǎn)生。介紹了國家大劇院超長水池結(jié)構(gòu)溫度應(yīng)力的計算、預(yù)應(yīng)力的設(shè)計和施工要點。
［關(guān)鍵詞］ 超長結(jié)構(gòu) 溫度應(yīng)力 預(yù)應(yīng)力
PRC Pool Structure in the National Grand Theatre/Tong Weimin1,Qin Jie1,Liu Jikang2 (1 Beijing Building Construction Research Institute,Beijing 100039，China; 2 Beijing Institute of Architectural Design & Research,Beijing 100045,China)
Abstract:The pool structure of the National Grand Theatre is an overlong concrete structure. To solve the problem of temperature stress，the method of prestressed concrete as well as the measures of adding steel bar or tiny expand material in concrete,or setting post cast strip,are used to decrease concrete shrink and creep.The stress and strain of structure in temperature field,the points of main influence of temperature stress,and the design and construction of the pool structure are discussed.
Keywords:overlong structure; temperature stress; prestress; concrete
