SIMPLIFIED COMPUTATION OF HIGH GRID FRAME STRUCTURE WITH PHOSPHOGYPSUM AS THE WALL UNDER HORIZONTAL LOADS

Grid frame structure with phosphogypsum as the wall is a new type structure,which can be designed by the existing structure software.The conversion formula of the thickness of the equivalent shear wall is established according to the principle of the same top displacement under horizontal loads.The error between the calculated value and the finite element analysis of grid frame structure with phosphogypsum as the wall is only 0. 4% ,which is 8. 59% as compared with the equivalent shear wall.The error of finite element analysis of the equivalent shear wall is caused by not considering the impact of the hole weakening the cross-sectional area and stiffness.Overall,the theoretical calculation values and finite element analysis results agree well,the conversion formula of equivalent shear wall thickness is consistent with the actual conditions,which may provide a reference for engineering design reference．