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七、矩形截面对称配筋矩形截面对称配筋的偏心受压构件,其正截面承载力计算,基本上同前述不对称配筋,只是因As=As′,其计算更加简化。为什么要有对称配筋呢?因为偏心受压构件在各种不同的水平和垂直荷载组合作用下,可能要承受不同符号的弯矩(即有+M和一M),当正负弯矩之值相差不太多寸,为了简化截面配筋和施工方便,通常就采用对称配筋。一般
7. Symmetrical reinforcement of rectangular cross-section The eccentric section of symmetrically-loaded rectangular cross-section members is calculated by its normal section bearing capacity, which is basically the same as the aforementioned asymmetrical reinforcement, but because of As=As′, the calculation is more simplified. Why do we need symmetrical reinforcement? Because the eccentric compressive members may under different combinations of horizontal and vertical loads, may be subject to different signs of bending moment (that is, there are +M and a M), when the positive and negative bending moments The values do not differ too much. In order to simplify cross-section reinforcement and construction convenience, symmetrical reinforcements are usually used. general