Study On The Stiffness Ratio In Transfer Stories And The Seismic Design Method Of Frame-supported Multi-ribbed Slab Structure

Frame-supported multi-ribbed slab structure with large space at the bottom adopt multi-ribbed composite slab at the top. There are many advantages of multi-ribbed slab structure, such as light self weight, good internal performance, high bearing capacity and energy dissipating capability. What's more, the bearing and stiffness of the composite slab can be changed in terms of different design situation. Therefore, it's easy to coordinate vertical stiffness of large space structure, lighten the damage of earthquake and improve the seismic capacity. In this paper, failure procedure and deformation features under both vertical and horizontal load of frame-supported multi-ribbed wall beam are studied. At the same time, both the rational ratio of lateral stiffness for frame-supported multi-ribbed slab structure in transfer stories and the seismic calculation methods are well defined. By the way, the seismic detail measures of frame-supported multi-ribbed slab structure is also raised.1. The pseudo-static experiments of four large-scale models of frame-supported multi-ribbed slab structure are done. According to the results of the experiments, failure procedure and deformation features under both vertical and horizontal load of frame-supported multi-ribbed wall beam are studied. Meanwhile, the influence to the deformation features and bearing capacity are deeply discussed based on the stiffness ratio of frame-supported multi-ribbed wall beam.2. According to the characteristics of frame-supported multi-ribbed slab structure, not only the frame-supported elastic composite slab mechanical model but also the finite element model is established. The elastic seismic response is analyzed through this model. As a result, the influence on displacement which is due to the ratio of lateral stiffness in transfer stories is discussed. What's more, the rational ratio of lateral stiffness for frame-supported multi-ribbed slab structure in transfer stories is well defined.3. The seismic calculation methods and seismic detail measures of frame-supported multi-ribbed slab structure are provided with seismic control design method.