混凝土构件的配筋计算

强度设计值,混凝土强度等级,,,,,,,,,,,,,,,,,,,,

,C15,C20,C25,C30,C35,C40,C45,C50,C55,C60,C65,C70,C75,C80,,,,,,,

fc,7.2,9.6,11.9,14.3,16.7,19.1,21.2,23.1,25.3,27.5,29.7,31.8,33.8,35.9,,,,,,,

ft,0.91,1.1,1.27,1.43,1.57,1.71,1.8,1.89,1.96,2.04,2.09,2.14,2.18,2.22,,,,,,,

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钢筋强度设计值,,,"fy,fy'",,,,,α1、β1值,,,,,,,,,,,,,

热扎钢筋,HPB235,,210,,,混凝土级别,,≤C50,C55,C60,C65,C70,C75,C80,,,,,,,

,HRB335,,300,,,α1,,1,0.99,0.98,0.97,0.96,0.95,0.94,,,,,,,

,HRB400,,360,,,β1,,0.8,0.79,0.78,0.77,0.76,0.75,0.74,,,,,,,

,RRB400,,360,,,,,,,,,,,,,,,,,,

,,,,,,钢筋级别,,界限相对受压区高度ξb,,,,,,,,,,,,,

,,,,,,,,≤C50,C55,C60,C65,C70,C75,C80,,,,,,,

,,,,,,HPB235,,0.614,,,,,,,,,,,,,

,,,,,,HRB335,,0.55,0.541,0.531,0.522,0.512,0.503,0.493,,,,,,,

,,,,,,HRB400,,0.518,0.508,0.499,0.49,0.481,0.472,0.463,,,,,,,

,,,,,,RRB400,,0.518,0.508,0.499,0.49,0.481,0.472,0.463,,,,,,,

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混凝土强度等级,,,C30,,轴心受压构件的承载力计算,,,,,,,,,,,,,,,,

钢筋类别,,,HRB335,,,,,,,,,,,,,,,,,,

梁截面尺寸,,砼强度设计值N/mm2,,钢筋强度,弯矩设计值,,轴力设计值,,计算长度,,界限相对高度,长细比,偏心距,计算全部纵向受力钢筋面积,最小配筋率,最小配筋面积,最后纵向受力钢筋面积,,实际配筋率,3%配筋面积,5%配筋面积

b(mm),h(mm),fc,ft,fy',M(KNm),,N(KN),,"l0

(mm)",α1,ξb,l0/h,e,AS’,rmin,"As,min",AS,,r,AS’,AS’

400,500,14.3,1.43,300,160,,2500,,7500,1,0.55,15.0,336.3,-9505.8,0.006,1200,1200.0,,0.60%,6000,10000

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初始偏心距,,,偏心距增大系数,,,受压区高度,属于小偏心,x>=2as',,配筋率合适,,,,,,,,,,,

e0,ea,ei,ζ1,ζ2,η,x