Behavior of cylindrical R/C panel under combined axial and lateral load

摘要

R/C cylindrical panels have been often used for the storage reservoir, tank, stack and cooling tower structures. They usually possess the high ultimate strength under lateral uniformly distribute loading. Therefore, they are used for the wall structure. However, when R/C cylindrical panels have heavy roof structure such as the underground LNG tanks or they are huge structures such as tall stacks or the huge cooling towers, they are subjected to combined axial compressive and lateral flexural loadings. In this paper, the deformation characteristics and the ultimate strength of R/C cylindrical panel under combined axial and flexural loadings are investigated numerically. In numerical analyses, FEM procedures are used based on the degenerate shell formulation. The numerical parameters are obtained from the experimental results and the numerical models are constructed based on the experimental specimens. The distribute or the concentrate loadings are considered as the flexural loading.