GB/T 50761-2018 Translated English of Chinese Standard. (GBT 50761-2018, GB/T50761-2018, GBT50761-2018): Standard for seismic design of petrochemical steel equipmenthttps://www.chinesestandard.net, 2019 M03 30 - 84 pages In order to implement the national laws and regulations on earthquake prevention and disaster reduction, implement a prevention-oriented policy, mitigate the seismic damage by seismic-fortifying the petrochemical equipment, reduce economic loss, this standard is hereby formulated. This standard is applicable to the seismic design of the petrochemical horizontal vessel, vertical vessels supported by legs, vertical vessels supported by lugs, vertical vessels supported by skirt, spherical tanks supported by legs, vertical cylindrical storage tanks, tubular heater, other steel equipment which are used in the area where the basic seismic acceleration not exceeding 0.40 g or seismic fortification intensity of 9 degrees or less. |
Contents
| 6 | |
Basic requirements | 13 |
Horizontal vessels | 29 |
Vertical vessels supported by skirt | 36 |
Spherical tanks supported by legs | 41 |
Tubular heater | 54 |
Appendix A Horizontal seismic action of onframework equipment | 66 |
Seismic checking of vertical vessels supported by lugs | 75 |
Explanation of wording in this standard | 83 |
Common terms and phrases
9 degrees acceleration of ground accordance with clause according to Table action and seismic allowable stress design basic natural vibration bottom shear method calculated according calculated as follows category-2 characteristic period chimney comply compressive stress convection chamber cross-sectional area current national standard damping ratio design basic acceleration design value diameter factor of seismic following formula following requirements ground motion height horizontal load horizontal seismic action horizontal seismic influence horizontal vessel leg’s baseplate lifting force limit state design material MPa maximum value modulus of elasticity N/mm natural vibration period on-framework equipment particle period of ground provisions of clause radiation chamber response spectrum ring of tank segment seismic allowable stress seismic checking seismic design seismic fortification intensity seismic influence factor shear stress Sinopec spherical tank supported steel-angle stored solution supported by legs supported by skirt tank wall tensile stress thickness tie-bar time-history top surface value of horizontal vertical seismic action vertical vessels supported