SEISMIC EXPERIMENTAL RESEARCH OF CONCRETE FILLED STEEL TUBE COLUMNS-CONCRETE COMPOSITE SHEAR WALL

摘要

Shear wall is the main component to resist lateral forces, which has been mostly used in high-rise buildings. So to develop shear walls which have better seismic behavior is one of the key techniques of seismic design. Concrete filled steel tube columns-concrete composite shear wall is a new kind of composite shear wall, which can combine the big lateral stiffness of concrete wall and good vertical load-carrying capacity and ductility of concrete filled steel tube column. The experimental study on the seismic behavior of fifteen specimens with different design parameters including material strength, axial-load ratio, shear-span ratio, shear connector has been done. Six specimens will be introduced in this paper. Based on the experiment, load-carrying capacity, ductility, stiffness and its degradation, hysteretic property, energy dissipation and failure phenomena of each shear wall are contrastively analyzed. The experimental results show that this kind of new shear wall can play the advantage of components and has good seismic performance.