地脚法兰节点设计计算书

1轴力:14.6KN剪力:25.4KN弯矩:285.3KN.M1.塔柱连接计算法兰盘尺寸D外=600mm300螺孔D=46D中=525mm262.5D内=450mm225管壁厚t=8采用12个M42Q345螺栓根据《单管塔技术规程》公式5.3.3-1，得0y1=479.510y11=348.202299201y2=444.3316711y12=444.301974312y3=348.2512y13=479.501212783y4=217.0000113y14=444.30470894y5=85.75000814y15=348.307353.15y6=-10.3316615y16=217006y7=-45.516y17=85.75007y8=-10.3316817y18=-10.3008y9=85.74998418y19=-45.5009y10=216.9999819y20=-10.300976222Ntmax=138.91681KN141.35地脚螺栓承载力为201KN满足要求0.69112.塔柱法兰盘计算法兰盘底板强度295Mpa法兰盘加劲肋所围成的面积a=75b=135.88查表得mb=0.0900039α=0.7611746a/b=0.55196M=23049KN.Mt√5M/f=19.76514320满足3.法兰盘加劲肋计算假定t=14mm加劲肋材质f=175N/mm2h=160mmfv=120N/mm2S1=30mmS2=30mmV=105740KN单管塔塔脚计算底板厚度取（mm)加劲肋剪应力τ=47.205331满足要求加劲肋正应力σ=55.318748满足要求竖焊缝计算lw=200焊缝强度ftw=265N/mm2hf=8fvw=180N/mm2τf=66.0875满足要求σf=74.3484满足要求折算应力136.493满足要求水平焊缝hf=8lw=100σf=132.175满足要求