ELASTO-PLASTIC ANALYSIS OF CYLINDERICAL SHELL BY RBSM

摘要

This paper is the study on the experiment and elasto-plastic analysis of reinforced concrete cylindricalrnshell structures by Rigid-Bodies Spring Model(RBSM). In rigid-bodies spring model, each collapsesrnpart or piece of structures at the limiting state of loading is assumed to behave like rigid bodies. Thernpresent author proposes new discrete elements for limit analysis of cylindrical shell structures, that is, arnrectangular-shaped cylindrical element and a rhombus-shaped cylindrical element for the improvementrnand expansion of this rigid element spring model. In this study, it is proposed how this rigid elementrnspring model can be applied to the elasto-plastic limit analysis of cylindrical shell structures. Somernnumerical results of elasto-plastic analysis and experimental results such as the curve ofrnload-displacement and the yielding and fracturing pattern of structures are shown.