Design and calculation for wind girder and stiffening ring of large-scale oil tank

Large-scale oil tanks propose new requirements for design of wind girder and stiffening ring. Under the premise of comparison between domestic and foreign design standards for the wind girder and stiffening ring of large storage tanks, modulus of section for the wind girder and stiffening ring of a 20×10⁴ m³ floating roof tank was designed respectively according to Chinese Standard GB 50341 and American Standard API 650. A finite element numerical calculation under different load conditions was built using large finite element software ANSYS to conduct strength and stability calculations respectively for the wind girder and stiffening ring so as to obtain deformation characteristics of the tank wall and extreme wind pressure value. Comparative analysis on calculation results of the wind girder and stiffening ring designed according to GB 50341 and API 650 was conducted to propose suggestions on design calculations of the wind girder and stiffening ring, which could provide useful references for designers of large storage tanks.