.混凝土参数（N/mm2）混 凝 土 强度等级强度标准值强度设计值模量抗压抗拉抗压抗拉弹性剪变疲变fckftkfcftEcGc=0.4EcEcfC1510.0 1.27 7.20.912.20x1040.88 x104C2013.4 1.54 9.61.102.55x1041.02 x1041.10 x104C2516.7 1.78 11.91.272.80 x1041.12 x1041.20 x104C3020.1 2.01 14.31.433.00x1041.20 x1041.30 x104C3523.4 2.20 16.71.573.15 x1041.26 x1041.40 x104C4026.8 2.39 19.11.713.25 x1041.30 x1041.50 x104C4529.6 2.51 21.11.803.35 x1041.34 x1041.55 x104C5032.4 2.64 23.11.893.45 x1041.38 x1041.60 x104C5535.5 2.74 25.31.963.55 x1041.42 x1041.65 x104C6038.5 2.85 27.52.043.60 x1041.44 x1041.70 x104C6541.5 2.93 29.72.093.65 x1041.46 x1041.75 x104C7044.5 2.99 31.82.143.70 x1041.48 x1041.80 x104C7547.4 3.05 33.82.183.75 x1041.50 x1041.85 x104C8050.2 3.11 35.92.223.80 x1041.52 x1041.90 x104普通钢筋参数（N/mm2）种类极限强度标准值fstk屈服强度标准值fyk抗拉强度设计值fy抗压强度设计值fy横向钢筋抗拉设计值fyvEsHPB3004203002702702702.1 x105HRB3354553353003003002.0 x105HRB4005404003603603602.0 x105HRB5006305004354103602.0 x105界限受压区高度 xb混凝土强度C50C55C60C65C70C75C80有屈服点HPB3000.5760.5660.5560.5470.5370.5280.518HRB3350.5500.5410.5310.5220.5120.5030.493HRB4000.5180.5080.4990.4900.4810.4720.463HRB5000.4820.4730.4640.4550.4470.4380.429无屈服点HPB3000.4010.3930.3850.3770.3690.3610.353HRB3350.3880.3800.3730.3650.3570.3490.342HRB4000.3720.3640.3570.3490.3410.3340.326HRB5000.3530.3460.3380.3310.3240.3170.3091不超过C50时，取为0.80，C80时，0.74，其间按线性内插法确定。1不超过C50时，取为1.00，C80时，0.94，其间按线性内插法确定。截面受拉区配置不同种类的钢筋时，b应分别计算，并取其较小值。附加箍筋承受集中荷载（HPB300）(kN)箍筋直径两侧双肢箍筋总个数146810615.361.191.6122.1152.7827.1108.6162.9217.1271.41042.4169.6254.5339.3424.11261.1244.3366.4488.6610.71483.1332.5498.8665.0831.316108.6434.3651.4868.61085.7每根附加吊筋承受集中荷载(kN)吊筋直径HPB300级HRB335级HRB400级45度60度45度60度45度60度1029.99 36.73 33.32 40.81 39.99 48.97 1243.18 52.89 47.98 58.77 57.58 70.52 1458.78 71.99 65.31 79.99 78.37 95.99 1676.77 94.03 85.30 104.47 102.36 125.37 1897.17 119.00 107.96 132.23 129.55 158.67 20119.96 146.92 133.29 163.24 159.94 195.89 22145.15 177.77 161.28 197.52 193.53 237.03 25187.43 229.56 208.26 255.07 249.91 306.08 28235.12 287.96 261.24 319.95 313.49 383.95 32307.09 376.11 341.21 417.90 409.46 501.48 . v.纵向受拉钢筋的锚固长度 laE钢筋种类抗震等级混凝土等级C15C20C25C30C35C40C45C50C55C60HPB300一、二54.60d45.17d39.12d34.75d31.65d29.06d27.60d26.29d25.35d24.36d三49.85d41.24d35.72d31.73d28.90d26.53d25.20d24.00d23.15d22.24d四、非抗震47.48d39.28d34.02d30.21d27.52d25.27d24.00d22.86d22.05d21.18dHRB335一、二53.08d43.91d38.04d33.78d30.77d28.25d26.84d25.56d24.65d23.68d三48.47d40.10d34.73d30.84d28.09d25.79d24.50d23.34d22.50d21.62d四、非抗震46.16d38.19d33.08d29.38d26.76d24.57d23.34d22.23d21.43d20.59dHRB400一、二63.70d52.70d45.64d40.54d36.92d33.90d32.20d30.67d29.58d28.42d三58.16d48.11d41.67d37.01d33.71d30.95d29.40d28.00d27.00d25.95d四、非抗震55.39d45.82d39.69d35.25d32.11d29.48d28.00d26.67d25.72d24.71dHRB550一、二63.67d55.15d48.98d44.61d40.96d38.91d37.06d35.74d34.34d三58.14d50.36d44.72d40.73d37.40d35.53d33.84d32.63d31.35d四、非抗震55.37d47.96d42.59d38.79d35.62d33.84d32.23d31.08d29.86d注：1锚固长度修正系数详见混规8.3.2条。2搭接长度取值：纵向钢筋搭接接头面积百分率25%时，取1.2倍锚固长度，50%时，取1.4倍，100%时取1.6倍。受压构件全部纵向钢筋最小配筋率(%) 混8.5.1钢筋种类混凝土等级C15C20C25C30C35C40C45C50C55C60C65C70C75C80HPB3000.60.60.60.60.60.60.60.60.60.70.70.70.70.7HRB3350.60.60.60.60.60.60.60.60.60.70.70.70.70.7HRB4000.550.550.550.550.550.550.550.550.550.650.650.650.650.65HRB5000.50.50.50.50.50.50.50.50.50.60.60.60.60.6受弯、偏心受拉、受拉构件一侧受拉钢筋最小配筋率(%) 0.20和45ft/fyHPB3000.2000.2000.2120.2380.2620.2850.3000.3150.3270.3400.3480.3570.3630.370HRB3350.2000.2000.2000.2150.2360.2570.2700.2840.2940.3060.3140.3210.3270.333HRB4000.2000.2000.2000.2000.2000.2140.2250.2360.2450.2550.2610.2680.2730.278HRB5000.2000.2000.2000.2000.2000.2000.2000.200