Improvement of the Stability Evaluation Method for NB/T 47065-based Container Legs
In this paper,considering the fact that NB/T 47065 Standard fails to think about the additional bending moment influence from the external pipe system on the stability of the support legs,the support leg reaction formula was revised.Through analyzing the bending moment ratio at both ends of the support leg,the bending stress formula was further revised to reduce conservation amount of the bending stress.In addi-tion,through referring to JB 4732,ASME BPVC Ⅲ and other specifications,the allowable stress coeffi-cient under accidental load conditions was introduced and a leg stability evaluation method which consider-ing the equal safety margin was obtained and it complies with the actual load combination in engineering.Through making use of a finite element analysis example,the conservatism of this evaluation method was verified.
NETL
NSTL
万方数据
维普
