Elasto-plastic models of a multi-ribbed slab structure

A multi-ribbed slab structure consists of various materials and its components nest each other,thses makes the whole calculation model of the structure extremely complicated.Therefore,it is necessary to present an elasto-plastic model for the whole stressing process of the structure under strong seismic action.According to different analysis objectives,a rigid frame-equivalent diagonal strut model and a rigid frame-whole bracing model for an eco-composite wall structure in elastic-plastic stage were presented.According to the previous results of pseudo-dynamic test on the walls,the rigid frame-equivalent diagonal strut model was employed to perform push-over and dynamic response analysis,therefore,the validity of the model was verified.Based on the previous results of shaking table tests with 1 / 10 ratio,the rigid frame-whole bracing mode was employed to perform the time-history analysis,therefore,the validity of the model was also verified.Theoretical studies was and experimental analysis showed that the rigid frame-equivalent diagonal strut model possesses a certain calculation accuracy and feasibility and is suitable for nonlinear numberical analysis of multi-ribbed composite walls;the rigid frame-whole bracing model with higher accuracy and efficiency is applicable to structural elastic-plastic and time-history analysis under strong seismic action.