鋼管法蘭設(shè)計(jì)和螺栓設(shè)計(jì)

1、版權(quán)所有版權(quán)所有地腳螺栓計(jì)算地腳螺栓計(jì)算201910522:08安徽院電網(wǎng)室線(xiàn)路結(jié)構(gòu)安徽院電網(wǎng)室線(xiàn)路結(jié)構(gòu)設(shè)計(jì)：孫付濤孫付濤鋼管桿底徑(mm)(mm)初選地螺規(guī)格(mm)2020設(shè)計(jì)取值800800夾角度數(shù)18.0018.00地螺間距(mm)(mm)底部彎矩(kN.m)(kN.m)設(shè)計(jì)值地螺中心距(mm)878878137.9137.9500.00500.00底板外邊距(mm)940940地螺規(guī)格(mm)(mm)桿塔全重(kg)(kg)地

2、螺孔徑(mm)262620M2020002000Yimax(mm)839.00地螺中心距(mm)(mm)地腳螺栓個(gè)數(shù)∑Yi25125075.535125075.538808802020Nmax(kN)80.680.6底板外邊距(mm)(mm)地螺抗拉應(yīng)力螺栓允許拉力(kN)44.044.0950950(Nmm(Nmm2)螺栓規(guī)格校驗(yàn)無(wú)此規(guī)格或重選底板內(nèi)邊距(mm)(mm)200.0200.0連接螺栓級(jí)別4.84.8級(jí)螺栓802802說(shuō)明

3、:當(dāng)彎矩采用設(shè)計(jì)值時(shí)，地腳螺栓抗拉應(yīng)力亦應(yīng)為設(shè)計(jì)值，保持二者的一致性。對(duì)于高強(qiáng)螺栓，如法蘭連接螺栓，由于取用的是地栓的凈截面積，計(jì)算結(jié)果偏安全。地腳螺栓特性表如下：地腳螺栓特性表直徑（mm）凈截面積（cm2）Q235鋼抗拉標(biāo)準(zhǔn)值35#鋼抗拉標(biāo)準(zhǔn)值(kN)(kN)161.4716.219.9202.2024.229.7222.7630.437.3243.1734.942.8274.1946.156.6305.0855.968.6336.3

4、669.084.7367.4582.1100.84210.26112.8138.44512.04130.9160.74813.52148.7182.55216.26179.3220.15618.74206.0252.86021.94235.4288.96424.81272.8334.8版權(quán)所有版權(quán)所有底板、加勁板計(jì)算201910522:08安徽院電網(wǎng)室線(xiàn)路結(jié)構(gòu)安徽院電網(wǎng)室線(xiàn)路結(jié)構(gòu)設(shè)計(jì)：孫付濤孫付濤肋板厚度(mm)1414法蘭板外徑(mm

5、)950950厚度校核(mm)滿(mǎn)足要求法蘭板內(nèi)徑(mm)802802抗剪應(yīng)力(Nmm2)125.0125.0地螺中心距(mm)880880抗拉應(yīng)力(Nmm2)215.0215.0Ly(mm)138.23138.23新規(guī)范高度(mm)79Lx(mm)74.0074.00老手冊(cè)高度(mm)33LxLy0.540.54設(shè)計(jì)取值：螺栓個(gè)數(shù)2020長(zhǎng)度(mm)7474螺栓孔徑(mm)2626高度(mm)8080Nmax(kN)80.680.6法蘭

6、板受力簡(jiǎn)圖厚度(mm)1414底部彎距(kN.m)500.0500.0備注：桿塔重量（kg)2000.02000.0表一系數(shù)β值抗拉應(yīng)力(Nmm2)215.0215.0LxLy0.300.300.350.350.400.400.450.450.500.500.550.550.600.600.650.65底板凈面積（mm2)193032.0193032.0系數(shù)0.02730.02730.03550.03550.04390.04390.05

7、220.05220.06020.06020.06770.06770.07470.07470.08120.0812彎距放大系數(shù)1.01.0LxLy0.700.700.750.750.800.800.850.850.900.900.950.951.001.00新規(guī)范β值（查左表）0.0667系數(shù)0.08710.08710.09240.09240.09720.09720.10150.10150.10530.10530.10870.10870.