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    黃智偉  張琪偉  張保印  張興虎    （西安建筑科技大學(xué)  西安 710055） 

    張    偉     （中基建設(shè)監(jiān)理咨詢有限公司  西安 710062）

 

[提要]  介紹了西北政法大學(xué)新建教學(xué)樓預(yù)應(yīng)力框架中預(yù)應(yīng)力梁反拱及截面應(yīng)力分布的工程實(shí)測(cè)結(jié)果，分析了隨著預(yù)應(yīng)力的逐步施加，預(yù)應(yīng)力梁反拱、截面應(yīng)力分布的變化過(guò)程以及各梁之間的相互影響，并與現(xiàn)行計(jì)算理論的計(jì)算結(jié)果進(jìn)行了比較。最后通過(guò)對(duì)預(yù)應(yīng)力框架的受力分析，提出了考慮預(yù)應(yīng)力框架與非預(yù)應(yīng)力框架在次梁及樓板的約束作用下整體協(xié)同工作的結(jié)構(gòu)計(jì)算數(shù)學(xué)模型，并指出了在預(yù)應(yīng)力鋼筋混凝土框架設(shè)計(jì)時(shí)進(jìn)行施工階段驗(yàn)算的必要性。
[關(guān)鍵詞]  預(yù)應(yīng)力框架  整體協(xié)同工作  截面應(yīng)力分布

Field survey results of reverse cove and section stress distribution of the beams of a new-built PRC school building in Northwest Politic & Law University are introduced, its change course and the relative influence between different beams with the increase of prestress are analyzed, and it is compared with the calculation results of present theories. With interior forces analysis, a new structure model considering cooperation between prestressed reinforced concrete frame and reinforced concrete frame structures under the restrain of secondary beams and floor is proposed.
Keywords:  prestressed frame structure; cooperation; stress distribution