Numerical analysis of dynamic response of RC grid frame structure with phosphogysum as wall

The RC grid frame structure with phosphogysum walls is a new type of innovative structural system,where a grid is set within the conventional beam-column frame,and the walls are made of industrial waste phosphogysum.Space thin-walled bar finite element model is adopted to analyze the dynamic response of this type of structure.The results show that: the stiffness of the frame structure is small,thus the inter-story shear force and bending moment caused by seismic ground motions are small;the stiffness of shear wall structure is large,thus the inter-story shear force and bending moment are large;the vibration period,deformation and internal forces of the grid frame structure are between the conventional frame structure and the shear wall structure.Through reducing the weight and adjusting the vibration characteristics,the grid frame structure can overcome the weakness of the conventional frame structure and shear wall structure achieving bigger structural rigidity than the frame structure and smaller weight than the shear wall structure,thus to reduce the seismic reponses of the structure.