塔式结构高耸风荷载计算.xls

塔式结构高耸风荷载计算.xls

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石油化工高塔风荷载（沿塔身质量分布均匀的塔）的计算1计算依据：

SHT3030-2009石油化工塔型设备基础设计规范GB50009-2012建筑结构荷载规范2风荷载计算风荷载计算公式2.1高度Z处的顺风向风振系数计算结构的自振周期T1计算当T1=0.25s应考虑风压脉动对结构顺风向风振的影响按照附录A塔型设备基本自振周期计算公式SH3030-A1从基础底板顶面至设备顶面的总高度h：

30.00塔型设备外径加权平均值D。

：

0.46则h2/D。

：

1956.52则T1为2.192.1.1峰值因子g2.502.1.2I10：

10m高度名义湍流强度A类地面粗糙度0.12B类地面粗糙度0.14C类地面粗糙度0.23D类地面粗糙度0.39本单体地面粗糙度为B类地面粗糙度则I10，10m高名义湍流强度为0.142.1.3脉动风荷载共振分量因子R其中Kw：

地面粗糙度修正系数A类地面粗糙度1.28B类地面粗糙度1.00C类地面粗糙度0.54D类地面粗糙度0.26则Kw为1.00基本风压W0为1.20则X1为（必须大于5）12.52结构阻尼比020）2）（1（WDqezszwkz210121RBzgIz3/421211）1（6R01301wKT1钢结构0.01有填充墙钢结构房屋0.02钢筋混凝土及砌体结构0.05其他结构经验确定本单体结构类型钢结构则为0.01则脉动风荷载的共振分量因子R为3.102.1.4脉动风荷载背景分量因子为GB50009-8.4.5k取值地面粗糙度高层建筑高耸建筑A类地面粗糙度0.941.28B类地面粗糙度0.670.91C类地面粗糙度0.300.40D类地面粗糙度0.110.16本单体K取值0.91a1取值地面粗糙度高层建筑高耸建筑A类地面粗糙度0.1550.186B类地面粗糙度0.1870.218C类地面粗糙度0.2610.292D类地面粗糙度0.3460.376本单体a1取值0.218脉动风荷载空间相关系数：

竖直方向的相关系数结构总高度H取值30.000GB50009-8.4.6-1本单体竖直方向的相关系数0.843水平方向的相关系数结构迎风面宽度B取值0.460GB50009-8.4.6-2对于迎风面宽度较小的高耸结构，水平方向相关系数可取1本单体水平方向的相关系数1.00高耸结构第1阶振型系数z/H第一阵型0.100.020.200.060.300.140.400.230.500.340.600.46zzkHBzzx）（11HeHHz60601060/BeBBz50501050/110.700.590.800.790.900.861.001.00计算高度Z30.00z/H=1.00高耸结构第1阶振型系数1.00风压高度变化系数地面粗糙度类别离地面高度（m）ABCD5.001.171.000.740.6210.001.381.000.740.6215.001.521.140.740.6220.001.631.250.840.6230.001.801.421.000.6240.001.921.561.130.7350.002.031.671.250.8460.002.121.771.350.9370.002.201.861.451.0280.002.271.951.541.1190.002.342.021.621.19100.002.402.091.701.27150.002.642.382.031.61200.002.832.612.301.92250.002.992.802.542.19300.003.122.972.752.45350.003.123.122.942.68400.003.123.123.122.914503.123.123.123.12地面粗糙度类别：

B风载作用处建筑物高度：

z=30.001风压高度变化系数1.42Bz本单体脉动风荷载的背景分量因子1.13高度Z处的顺风向风振系数计算3.582.2风载体型系数独立塔形设备风载体型系数取0.6，多排塔体型系数取值为2.2.1风垂直于塔布置方向塔直径d0.46塔净距s3.70净距与直径的比值s/d1.76zzzs垂直风风载体型系数0.60s/d0.001.200.251.200.500.90插值0.750.751.501.000.701.761.500.652.002.000.633.000.6010.000.60顺风风向风载体型系数0.60s/d0.000.680.250.680.500.861.500.94插值3.000.991.504.001.081.766.001.113.008.001.1410.001.20100.001.20本单体风载体型系数为0.602.30塔形设备风载扩大系数（按照SH3030第6.3.4条表2选择塔形设备风载扩大系数罐体直径独立平台（有直梯）联合平台（无斜梯）联合平台（有斜梯）0.600.470.741.070.700.430.660.960.800.400.600.880.900.380.560.811.000.350.520.741.200.300.460.661.400.290.440.611.600.280.400.551.800.260.360.512.000.240.340.472.200.230.310.432.400.230.300.412.600.220.290.402.800.210.280.373.200.200.260.353.400.200.250.353.600.190.250.333.800.190.240.314.000.190.230.314.500.180.220.305.000.170.210.275.500.170.200.266.000.160.200.24100.000.150.190.22本单体类型独立平台（有直梯）罐体直径为0.46本单体风载扩大系数为#N/A2.40塔形设备保温层的厚度0.10塔型设备沿高度作用的风荷载标准值qwk#N/Ae2SH3030-6.3.1条GB50009-8.4.3SH3030-6.3.2-a条mmsGB50009-8.4.4-1GB50009-8.4.4-2kN/m2mmGB50009-8.4.6-1GB50009-8.4.6-2对于迎风面宽度较小的高耸结构，水平方向相关系数可取1插值0.900.861.001.001.001.00m插值30.001.4230.001.4240.001.56类mmm0.650.640.630.940.950.99插值#N/A#N/AMicrosoftEquation3.0（按照SH3030第6.3.4条表2选择塔形设备风载扩大系数联合平台（有斜梯）0.46#N/A#N/A#N/AmmkN/m独立平台（有直梯）MicrosoftEquation3.0风风荷荷载载计计算算（黄黄色色为为需需要要根根据据工工程程实实际际调调整整的的内内容容）风压高度变化系数地面粗糙度类别离地面高度（m）ABCD51.1710.740.62101.3810.740.62151.521.140.740.62201.631.250.840.62301.81.4210.62401.921.561.130.73502.031.671.250.84602.121.771.350.93702.21.861.451.02802.271.951.541.11902.342.021.621.191002.42.091.71.271502.642.382.031.612002.832.612.31.922502.992.82.542.193003.122.972.752.453503.123.122.942.684003.123.123.122.914503.123.123.123.121风压高度变化系数插值地面粗糙度类别：

B类401.56风载作用处建筑物高度：

401.56z=40m501.671.562风荷载体型系数2.23高度z处的风振系数基本风压：

0.45kN/m2脉动影响系数总高度1020304050607080粗糙度类别A0.780.830.860.870.880.890.890.89B0.720.790.830.850.870.880.890.89C0.640.730.780.820.850.870.880.9D0.530.650.720.770.810.840.870.89建筑物总高度：

插值41m404150脉动影响系数：

0.850.850.87zzzss00zH0.85脉动增大系数0.010.020.040.060.080.10.20.40.6钢结构1.471.571.691.771.831.882.042.242.36结构第一振型周期：

插值0.5s0.10.110.20.111.881.902.041.90振型系数z/H第一阵型0.10.020.20.060.30.140.40.230.50.340.60.460.70.590.80.790.90.8611插值0.90.860.980.980.970.97112.014风荷载标准值3.10kN/m2201T22kNs/m1T201T1zzzzz/Hz0kzsz901001502002503003504004500.890.890.870.840.820.790.790.790.790.90.90.890.880.860.840.830.830.830.910.910.930.930.920.910.90.890.910.910.920.9711.011.011.01110.8124681020302.462.532.83.093.283.423.543.914.14风风压压高高度度变变化化系系数数地面粗糙度类别离地面高度（m）ABCD51.1710.740.62101.3810.740.62151.521.140.740.62201.631.250.840.62301.81.4210.62401.921.561.130.73502.031.671.250.84602.121.771.350.93702.21.861.451.02802.271.951.541.11902.342.021.621.191002.42.091.71.271502.642.382.031.612002.832.612.31.922502.992.82.542.193003.122.972.752.453503.123.122.942.684003.123.123.122.914503.123.123.123.12zUzABCDUs512.2w0=101T1=151.14v=201.25w0*T12=301.42E=401.56501.67601.77kN/m2风荷载标准值（kN/m2）高度/mwkQzBz0-51.050.041.065-101.230.151.2410-151.670.341.4815-202.160.581.7520-303.0012.14节点风荷载肢杆横腹杆斜腹杆平面立面10063631500150015001500面积mm2肢杆300000横腹杆94500斜腹杆133643汇总528143节点力kN高度/mwk0-50.285-100.3210-150.4415-200.5720-300.79Qz0.45kN/m2z/H第一阵型0.560.10.020.830.20.060.140.30.140.10.140.21.950.40.231.881.9457922.040.50.340.60.460.70.590.80.790.90.8611胎架规格截面标准格尺寸（m）肢杆横腹杆斜腹杆平面立面HW100X100X6X8L63X5L63X51.5X1.51.5X1.5