烟道加固肋计算讲课讲稿.xls

烟道加固肋计算算算法法一一计算段：Input data:RedCalculated data:Black已已知知条条件件:1烟气量:18502381850238m m3 3/h/h材料Q235-A.FQ235-A.F2烟道尺寸:许用应力t宽4.74.7m m弹性模量E高7.47.4m m3内压荷载：2.002.00kPakPa4道体厚度6 6mmmm5加固肋系数2.02.0内衬厚度6内衬材料密度:4 4g/cmg/cm3 3内衬材料厚度:0 0mmmm7保温容重:120120kg/mkg/m3 3保温厚度:100100mmmm8积灰密度F:4.0004.000 kN/mkN/m3 3 9雪载q4：0.4000.400kPakPa10风载q5：0.4000.400kPakPa11设计温度:150150基本数据受力面设计荷载组合表 kPa烟气流速(m/s)截面宽度(mm)截面高度(mm)内压q0自重q1保温q2积灰q314.7814.784700470074007400顶顶面面2.0002.000-0.923-0.923-0.129-0.1290 0侧侧面面2.0002.0000 00 00 0底底面面2.0002.0000.9230.9230.1290.1294.934.93项目顶Wa=4.704.70底Wa=加固肋间距面板设计荷载 q(Kpa)0.8278.266强度条件加固肋净间距S0(m)3.9401.281刚度条件加固肋净间距S0(m)3.1361.483振动条件加固肋净间距S0(m)1.105S最小S0值1.105选定S(m)1.0001.000横向加固肋=1.574=1.904内压荷载2.0002.000当量荷载qdl-1.1736.266Q=2.63610.075加固肋跨度L(m)WaWa/2Wa/3WaWa/24.72.351.64.72.35强度条件计算Z值41.310.14.4157.938.6刚度条件计算I值114.013.84.01139.0137.8振动条件计算I/G值见表T3.528.51.70.328.51.7初选加固肋（T4）选定加固肋I10内撑竿内撑竿根数n01201内撑竿长度W7.4007.4007.400杆受力(KN)Pg1.9451.29619.425内撑竿型式查表T3.7选定内撑竿纵向肋向内荷载（Kpa.m)q*S0.827横向肋不失效最大跨度Ls(查表T3.6)横向肋跨度L=W/(n+1)是否设加固肋纵向加固肋根数算算法法二二项目顶Wa=4.704.70底Wa=加固肋间距面板设计荷载 q(Kpa)0.838.27加固肋净间距S0值1.081.00选定S(m)1.001.00横向加固肋加固肋设计荷载Q=qS0.838.27加固肋跨度LWaWa/2Wa/3WaWa/24.702.351.574.702.35应力控制初选肋规格1020频率控制初选肋规格修正加固肋规格选定加固肋规格/材质内撑杆内撑杆根数n0.001.002.000.001.00内撑杆长度(m)7.40内撑杆受力3.062.0430.58初选规格选定规格/材质纵向加固肋向内荷载负压道体Qn0.838.27正压道体Qn横向肋不失稳最大跨度Ls横向肋跨度L2.351.572.35是否纵向肋纵向肋根数纵向肋规格/材质ProjectProj.-No.:prepared by:Date.:#Revision:1 1115115MpaMpa190190GpaGpa雪载q4风载q5组合设计荷载当量荷载-0.40-0.400.280.280.830.83-1.173-1.1730 00.200.202.202.200.2000.2000 00.280.288.278.276 64.704.70侧Wb=7.47.42.2002.4362.2780.6350.7680.2001.737Wa/3WbWb/2Wb/31.67.43.702.4716.868.016.87.339.51197.2146.642.60.3178.010.82.1设计荷载组合表 kPa20127.4004.7004.70018.7368.1404.9982.2004.704.70侧Wb=7.407.402.201.08按图T3.3-2选取1.00取各面S0的最小值+0.052.20Wa/3WbWb/2Wb/31.577.403.702.47按图T3.4-6选取表T3.5综合应力频率要求平衡各面2.000.001.002.004.7020.395.173.45式T3.1-8按表T3.7选择均衡各面2.20式T3.1-9式T3.1-10表T3.61.573.702.47LLs时设