- 摘 要
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韋芳芳
（東南大學(xué)土木工程學(xué)院 南京 210096）[提要] 探討了無粘結(jié)預(yù)應(yīng)力開洞平板中的布筋形式。通過有限元法求得中心開洞板和偏心開洞板在4種常見的布筋形式下使用階段的撓度和應(yīng)力，結(jié)果表明，兩邊均勻布筋和兩邊都分別在柱上板帶和洞口板帶集中布筋兩種形式在使用階段具有幾乎同樣好的結(jié)構(gòu)性能，所以建議在相似的預(yù)應(yīng)力平板開洞工程中采用兩邊都分別在柱上板帶和洞口板帶集中布筋形式。對于洞口的選擇也提出了建議。
[關(guān)鍵詞] 預(yù)應(yīng)力板 開洞板 配筋形式 無粘結(jié)預(yù)應(yīng)力Tendon distribution of unbonded prestressed slab with hole is discussed. Through the computation by finite element method with different tendon distribution, the deflection and stress of slabs with holes at different positions are obtained and analysed under normal working loads. The results show that the structural behavior of slabs with tendons banded close to column strip ancl edges of hole is as good as that with tendons uniformly distributed. In addition, some recommendations for choice of the position of hole are presented.
Keywords: unbonded prestressed slab; slab with hole; tendon distribution;prestressed concrete
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