RECONSIDERATION OF ESTIMATION PROCEDURE FOR ELASTIC PLASTIC BUCKLING LOADS OF CYLINDRICAL LATTICED SHELLS

Evaluation of effects of both geometrical initial imperfection and load eccentricity ratio on buckling loads

Abstract

Although AIJ recommendation for design of latticed shell roof structures has suggested a procedure to calculate buckling capacity of cylindrical latticed shells, calculation methods of the buckling capacity for the shells subjected to non-uniform load remain to be one of the indefinite issues. This paper investigates the effects of both load eccentricity and geometrical initial imperfection on buckling loads of cylindrical latticed shells with a special focus on the variation of the knock down factor due to the load eccentricity, and the results provide improvement for the estimation procedure suggested in the current AIJ recommendation.