浮顶罐底层壁板是罐体安装的基础。由于底层壁板上作用的周向应力和轴向弯曲应力最大和在这一节板上配件开孔最多,所以使油罐的使用安全性相对降低。本文对五万米~3浮顶罐有关底层壁板施工的立缝组对焊接和与罐底连接的内、外角缝、组装与焊接及底层壁板的合理宽度等问题作了较全面的介绍。 Floating roof tank bottom wall is the basis for tank installation. As the bottom wall of the role of the circumferential stress and axial bending stress and in this section board up to the largest openings, so the use of oil tank safety is relatively reduced. This paper gives a comprehensive introduction to the problems of vertical seam group welding of the bottom siding construction and the inner and outer corner seams connected with the tank bottom, assembly and welding, and the reasonable width of the bottom siding of a 50,000-m 3 floating roof tank .