b100010036011.9截面=14811.93601761600000.0540.972148=======保护层厚度20钢筋面积弯矩M4.13钢筋强度等级HRB400混凝土强度等级C250201)211(5.0hfMAbhfMsyssscsC157.2C209.6C2511.9C3014.3C3516.7C4019.1C4521.1C5023.1C5525.3C6027.5C6529.7C7031.8C7533.8C8035.9当混凝土强度等级不超过C50时,取为1.0,当混凝土强度等级为C80时,1111取为0.94,其他按线性内插法确定混凝土轴心抗压强度设计值fc(N/mm2)0201)211(5.0hfMAbhfMsyssscs3.754.1295HPB300270HRB335300HRB400360普通钢筋强度设计值0201)211(5.0hfMAbhfMsyssscsC50C8010.94当混凝土强度等级不超过C50时,取为1.0,当混凝土强度等级为C80时,1111取为0.94,其他按线性内插法确定1