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钢筋代换计算公式
更新时间： 2021-05-11 10:46:26  

1、 抗弯承载力（强度）验算:单筋矩形截面受弯构件正截面受弯承载力计算基本公式为：

M≤Mu=fyAs(ho-fyAs/2a1fcb) ，当砼强度等级超过C50，a1取1.0.。

2、钢筋代换抗剪承载力（强度）验算：钢筋砼受弯构件，当配有箍筋和弯起钢筋时，其：斜截面受剪承载力的计算公式为：

v≤0.7ftbho+1.25fyvAsvho/s+0.8fyAstysinαs,

αs---斜截面上弯起钢筋与构件纵向轴向的夹角，一般取αs=45°.

关键词： 钢筋 代换 计算 公式

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