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5.5.6 最小配筋率 a)所有承重构件都必须按照图5.3的要求,配置最低数量的非预应力筋。参见[15.2.4]ρrmin=A_s/A_(cef) =位于A_(cef)内的钢筋截面积/有效混凝土截面(见图5.2) b)配置大号钢筋或成群钢筋束的构件,需要较厚的保护层(c>35mm)。为充分控制裂缝开展,须按照图5.4配置表层钢筋,在计算抗弯和抗剪时,该表层配筋可以计入。参见[17.7.1] 第六章构造细则 6.1 混凝土保护层混凝土保护层不得小于按表6.1确定的标定值,其负公差不得超过5mm,正公差不作规定。参见[5.1] 6.2 间距位于不同水平层的钢筋应在竖直平面内对齐并在钢筋之间留有足够的空隙,以便震捣器插入。
5.5.6 Minimum Reinforcement Rate a) All load bearing members must be equipped with the minimum number of non-prestressed tendons as shown in Figure 5.3. See [15.2.4] ρrmin=A_s/A_(cef) = cross-sectional area of rebar within A_(cef)/effective concrete section (see Figure 5.2) b) configuration of large rebar or group of rebars Thick protective layer (c>35mm). In order to fully control the development of cracks, the surface reinforcement shall be configured as shown in Figure 5.4. The reinforcement of the surface layer may be included in calculating the bending and shear resistance. See [17.7.1] Chapter VI Construction Rules 6.1 Concrete protective layer The concrete protective layer shall not be less than the calibration value determined in accordance with Table 6.1. The negative tolerance shall not exceed 5mm, and the positive tolerance shall not be specified. See [5.1] 6.2 The rebars at different levels of spacing shall be aligned in the vertical plane and there shall be sufficient space between the rebars for the insertion of the shocker.