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4.9 框架梁的配筋計算 4.9.1 AB跨一層梁 a.正截面計算: 混泥土采用C30,鋼筋采用HPB335,則, ,, 采用矩形截面計算: 相對界限受壓區(qū)高度 xb ecu = 0.0033 - (fcu,k - 50)×10-5 = 0.0033 - (30 - 50)×10-5 = 0.0035 > 0.0033 取 ecu = 0.0033 xb = b1,1 + \F(fy,Esecu)) !Undefined Bookmark, EQ \FB1,1= 5×0.0033)) = 0.55 受壓區(qū)高度x |M| = a1fcbx\b \bc\((h0 - \F(x,2)) !Undefined Bookmark, EQ A1FCBX\B \BC\H0 x = h0 - h\o(0,2) - \F(2M,a