Design method research into latticed shell tube–reinforced concrete (RC) core wall structures

Latticed shell tube–RC core walls are a new structural system with RC core walls in the center and latticed shell tubing on the outsides. The shear rigidity of RC core wall is big, and the resisting overthrow capability of external latticed shell tubes is powerful. This combination can reduce structural damage that could be caused by seism, and it remarkably enhances the anti-seismic capability of structures. The basic design procedure for constructing these structures is introduced sequentially, particularly pointing out the key problem of the design. A comprehensive structural analysis is carried out and the performance of the new structure is evaluated thoroughly. A new practical method is proposed for evaluating this kind of structure, which uses an equivalent bars model to simulate the RC shear wall and slabs approximately, giving it similar rigidity and mass as existing structures by adjusting the elastic modulus and density of the material. Finally, the related design method is demonstrated with a project, and it is proved to be applicable to high rise building design.