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混凝土設計基本原理-第7章受扭構(gòu)件的扭曲截面承載力-資料下載頁

2025-01-19 03:59本頁面
  

【正文】 ts t lst ffVbTbhA . i n,m i n, ???率要求受扭縱筋滿足最小配筋%,360m i n, ????st?% ??yvtsv ff?要求:受剪扭箍筋最小配筋率受剪扭鋼筋最小配筋率驗算 ????tstvsvsAsA筋率要求滿足受剪扭箍筋最小配?構(gòu)造要求 配筋 ??tstvsvsAsA22 8 0 mmA stl ? 22 1 1 mmA s ? 10 ??,箍筋采用 ?223042113280933280mmmm?????底層:中間層層縱筋采用三層布置,頂mmH R BmmH R B14,400210,4002直徑根底層:直徑根中間層頂層 ??Design Procedure(設計過程) Check the minimum dimension of section; (檢查截面尺寸) Check if shear and torsion reinforcements can be arranged according to detailing requirements;( 是否可以構(gòu)造配置剪扭鋼筋) Check whether shear or torsion can be neglected. ( 是否可忽略 V或 T) Compute the flexural strength to determine the flexural reinforcements. ( 計算抗彎鋼筋) Compute torsion strength to determine the torsional stirrups and longitudinal bars. (計算抗扭鋼筋) Compute the shear strength to determine the shear stirrups. (計算抗剪箍筋) Add the amount of the same type of reinforcements and select reinforcements(配筋) Sketch the section( 繪制截面配筋圖) 01 hsnAfbhfV svyvt ??0101 hsnAfbhfV svyvt ??? ?c o rstyvtt AsAfWfT ???扭剪型破壞 扭型破壞 彎型破壞 滿足下列條件可按 構(gòu)造配置剪扭鋼筋 : ttfWTbhV 0??出現(xiàn)下列情況時, 可不考慮剪力或扭矩 的作用 (1)當 (2) 當 可不考慮剪力,即 V= 0 bhfV t?01 bhfVc+或 ??可不考慮扭矩,即 T= 0 ttWfT 1 7 ?cctfWTbhV ?0?? 截面尺寸驗算 yts t ltl ffVbTbhA n,mi n, ???yvtsvsv ff / i n, ?? ??)%/45(% i n yt ff或??二者中的較大值 最小配筋率 010)( hsnAfbhfV svyvtt ??? ?010)(1 hsnAfbhfV svyvtt ???? ??c orstyvttt AsAfWfT ?? ??0T b hVW tt ???0)1(T b hVW tt ??? ??yvyc orststffuAsA1??When ? is from to 3 , all torsional reinforcements can yield at ultimate torsion moment. Chinese Code: ? = ?Ratio of strength of longitudinal bars to stirrups 240 240 1300 2/ mkNq ?mkNp /?
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