Shaking table test and numerical analysis of single-layer reticulated domes with or without three-dimensional isolation bearing

Single-layer reticulated domes with high capacity and attractive shapes are widely used in many modern facilities, ranging from industrial architecture to large-scale public buildings, including railway stations, sports gymnasiums and exhibition halls. In order to understand the seismic performance of single-layer reticulated dome subjected to three-dimensional seismic motion, a shaking table test on this type of structure was conducted, and the experiment was also simulated using FEA software ABAQUS considering the material damage accumulation. And then, an innovative three-dimensional isolation bearing with the corresponding mechanical model was applied to reduce the dynamic responses of the structure. Furthermore, the seismic performance of single-layer reticulated dome with the isolated bearing was investigated through shaking table test and numerical simulation. The results show that FEA software ABAQUS with a user-defined subroutine (UMAT) to consider material damage accumulation can accurately simulates the structural dynamic behaviour before and after the application of the isolated bearing. Therefore, numerical analysis will be used in the different types of large-span space structure in the further study. At the same time, the design and engineering practice of the three-dimensional isolation bearing is mainly realized by numerical analysis, which is of great support significance for the quantitative research and engineering practice of the isolated large-span space structure. This can also make this new isolation technology quickly popularized, and also has an important role in promoting the subsequent revision of seismic isolation code for large-span space structure.