Research on Seismic Response of Steel - Concrete Composite Frame-RC Core Wall Structures

摘要

Elastic seismic response and parameters influence analysis of composite frame-RC core wall structures are performed. The effects which sections of beams and columns, thicknesses of core tube shear walls and numbers of stories have on the mechanical behaviour and deformation of structures are investigated. The following conclusions can be drawn in this paper: only enlarging the dimension of columns has little effect on decreasing structural displacements; while enlarging dimensions of columns and beams simultaneously or thickness of walls can reduce the elastic seismic displacement response effectively. Then with increasing thickness of shear walls, shear force and force distribution ratio of the outer composite frame decrease and the decreasing rate is larger especially in the middle and upper part of structures. Finally the control storey of the maximum storey deformation and outer frame shear force is in the middle and upper part of the structure.