Observed finite element capabilities and limitations from multi-team simulations of three concrete shell structures

Abstract

This paper describes a study whose primary intention was to determine how well state-of-the-art analytical/numerical methods could predict the response of three shell structures in the service-level and strength-level regimes. Presented herein are the results of six finite element analyses, performed by different analysts of three, reinforced concrete shells. The shells were scale models of: an end-supported cylinder with edge beams; an end-supported, three-unit folded plate without edge beams; and a hyperboloid of revolution. The results of the analyses generally showed good agreement between predicted and measured displacements before cracking. Significant differences were noted between the different numerical results, and between numerical and experimental results from post-cracking to structural collapse. Nevertheless, it is concluded that the finite element approaches presented here can provide a suitable platform for the analysis and design of these shells if used by an experienced designer.