风载标准值计算(新规范)

风载标准值计算 基本风压 w0 =0.60kN/m2粗糙度类别2 建筑高度 H =85.0m 计算高度 z =85.0m 迎风面宽度 B =48.0m注：B5 ok 阻尼比1 = 0.01 脉动风荷载的共振分量因子 =2.210 峰值因子 g=2.50 10m高度名义湍流强度 I10 =0.14 z高度处的风振系数1.877 体型系数1.00 风载标准值2.140kN/m2 对于围护系统 z高度处的阵风系数 gz =1.505查表值 z s H z B = -+ = - B eB B x 505010 50/ r = -+ = - H eH H z 606010 60/ r = 0 1 1 30 w w k f x = + = 3/42 1 2 1 1 )1 (6x x R z p =+= 2 10 121RBgI zz b = 0 ww zszk = z zx a z (z) kHB 1 1 f = += -a gz z gI 10 21 10 b 1.497 计算值 局部体型系数1.20 风载标准值2.0588= 01 ww zsgzk mmb = 1s m = += -a gz z gI 10 21 10 b 11 kw-地面粗糙度修正系数， 阻尼比1 10m高度名义湍流强度 I10 = 钢结 构高层建筑 = 1 z 地面粗糙度指数 A1.38 B1 C0.62 D0.32 A1.28 B1 C0.54 D0.26 0.010.020.05 A0.12 B0.14 C0.23 D0.39 kw-地面粗糙度修正系数， 10m高度名义湍流强度 I10 = a = A 0.12 B 0.16 C 0.22 D 0.33 地面粗糙度指数 表7.4.3 脉动增大系数 0T21 (kNs2m 2) 0.010.020.040.060.080.10.2 钢 结 构1.471.571.691.771.831.882.04 有填充墙的房屋 钢结构1.261.321.391.441.471.51.61 混凝土及砌体结 构1.111.141.171.191.211.231.28 -30-20-10-8-6-4-2 -4.14-3.91-3.54-3.42-3.28-3.09-2.8 -3.01-2.85-2.6-2.52-2.43-2.3-2.1 -2.06-1.96-1.82-1.7-1.72-1.65-1.54 表8.2.1 风压高度变化系数z 离地面或海平 面高度(m) 地面粗糙度类别 ABCDA 51.091.000.650.51-550-2.91 101.281.000.650.51-500-2.91 151.421.130.650.51-450-2.91 201.521.230.740.51-400-2.91 301.671.390.880.51-350-2.91 401.791.521.000.60-300-2.91 501.891.621.100.69-250-2.78 601.971.711.200.77-200-2.64 702.051.791.280.84-150-2.46 802.121.871.360.91-100-2.23 902.181.931.430.98-90-2.18 1002.232.001.501.04-80-2.12 1502.462.251.791.33-70-2.05 2002.642.462.031.58-60-1.97 2502.782.632.241.81-50-1.89 3002.912.772.432.02-40-1.79 3502.912.912.602.22-30-1.67 4002.912.912.762.40-20-1.52 4502.912.912.912.58-15-1.42 5002.912.912.912.74-10-1.28 5502.912.912.912.91-5-1.09 表8.4.5-1 系数k 和al 粗糙度类别ABCD k0.9440.670.2950.112 高层建筑a10.1550.1870.2610.346 高耸结构k1.2760.910.4040.155 a10.1860.2180.2920.376 表8.6.1 阵风系数gz 离地面高度地面粗糙度类别 (m)ABCD(m)A 51.651.702.052.40-550-1.40 101.601.702.052.40-500-1.40 151.571.662.052.40-450-1.40 201.551.631.992.40-400-1.40 301.531.591.902.40-350-1.40 401.511.571.852.29-300-1.40 501.491.551.812.20-250-1.41 601.481.541.782.14-200-1.42 701.481.521.752.09-150-1.43 801.471.511.732.04-100-1.46 901.461.501.712.01-90-1.46 1001.461.501.691.98-80-1.47 1501.431.471.631.87-70-1.48 2001.421.451.591.79-60-1.48 2501.411.431.571.74-50-1.49 3001.401.421.541.70-40-1.51 3501.401.411.531.67-30-1.53 4001.401.411.511.64-20-1.55 4501.401.411.501.62-15-1.57 5001.401.411.501.60-10-1.60 5501.401.411.501.59-5-1.65 G.O.2 迎风面宽度远小于其高度的高耸结构，其振型系数可按表G.O.2 采用。 表G.O.2 高耸结构的振型系放 相对高度振型序号 z/H1234 0.10.020.090.23-0.39 0.20.06-0.30.61-0.75 0.3O.14-0.530.76-0.43 0.40.230.680.530.32 0.50.34-0.710.020.71 0.60.46-0.59-0.480.33 0.70.590.32-0.66-0.4 0.80.790.070.4-0.64 0.90.86O.520.23-0.05 11111 G.O.3 迎风面宽度较大的高层建筑，当剪力墙和框架均起主要作用时，其振型系数可按表G.O.3采用。 表G.O.3 高层建筑的振型系数 相对高度振型序号 z/Hl234 0.10.02-0.090.22-0.38 0.20.08-0.30.58-0.73 0.30.17-0.50.7-0.4 0.40.270.680.460.33 0.50.38-0.63-0.030.68 0.60.45-0.480.490.29 0.70.67-0.180.63-0.47 0.80.740.170.34-0.62 0.90.860.580.27-0.02 11111 G.O.4 对截面沿高度规律变化的高耸结构，其第1振型系数可按表G.0.4 采用 表G.O.4 高耸结构的第1振型系数 相对高度高耸结构 z/HBH/Bo=1.00.80.60.40.2 0.10.020.020.010.010.01 0.20.060.060.050.040.03 0.30.140.120.110.090.07 0.40.230.210.190.160.13 0.50.340.320.290.260.21 0.60.460.440.410.370.31 0.70.590.570.550.510.45 0.80.790.710.690.660.61 0.90.860.860.850.830.8 111111 注:表中BH、Bo分别为结构顶部和底部的宽度。 0.40.60.81246810 2.242.362.462.532.83.093.283.423.54 1.731.811.881.932.12.32.432.522.6 1.341.381.421.441.541.651.721.71.82 -1-0.8-0.6-0.4-0.2-0.1-0.08-0.06-0.04 -2.53-2.46-2.36-2.24-2.04-1.88-1.83-1.77-1.69 -1.93-1.88-1.81-1.73-1.61-1.5-1.47-1.44-1.39 -1.44-1.42-1.38-1.34-1.28-1.23-1.21-1.19-1.17 BCD -2.91-2.91-2.91 -2.91-2.91-2.74 -2.91-2.91-2.58 -2.91-2.76-2.4 -2.91-2.6-2.22 -2.77-2.43-2.02 -2.63-2.24-1.81 -2.46-2.03-1.58 -2.25-1.79-1.33 -2-1.5-1.04 -1.93-1.43-0.98 -1.87-1.36-0.91 -1.79-1.28-0.84 -1.71-1.2-0.77 -1.62-1.1-0.69 -1.52-1-0.6 -1.39-0.88-0.51 -1.23-0.74-0.51 -1.13-0.65-0.51 -1-0.65-0.51 表7.4.3 脉动增大系数 -1-0.65-0.51 BCD -1.41-1.50-1.59 -1.41-1.50-1.60 -1.41-1.50-1.62 -1.41-1.51-1.64 -1.41-1.53-1.67 -1.42-1.54-1.70 -1.43-1.57-1.74 -1.45-1.59-1.79 -1.47-1.63-1.87 -1.50-1.69-1.98 -1.50-1.71-2.01 -1.51-1.73-2.04 -1.52-1.75-2.09 -1.54-1.78-2.14 -1.55-1.81-2.20 -1.