Hysteretic Analysis Of Composite Steel Plate Shear Wall Connected To Frame Beams

As a new kind of lateral resistance member, composite steel plate shear walls (CSPSW) is developed in rerent years. Compared with reinforced concrete (RC) shear walls, it has the strong points, such as good ductility, good energy dissipation ability, and etc. Meanwhile it can reduce the thickness of shear wall and the weight of structure. Compared with steel plate shear wall (SPSW), it prevents the out-of-plane buckling of steel plate. As a result, the energy dissipation ablility of CSPSW can be significantly greater than that of SPSW. In addition, the RC wall provides sound and temperature insulation as well as fire proofing to steel shear walls. As the shear wall is not connected to the frame columns, this solution can provide open space in a floor as this kind of composite shear walls with relatively small aspect ratio can be placed parallel along a bay. In this dissertation, the hysteretic behavior of CSPSW connected to frame beams is studied. The main works are listed as follows:One specimen was tested, which consisted of concrete-filled circuiar hollow section steel columns, steel beams and CSPSWs. A new kind of connection detail was suggested and tested in the experiment. Based on the experimental results, the strains on composite columns and frame beams were analyzed. Also, the study on initial stiffness, load-carrying capacity, ductility and energy dissipation ability of the specimen was done.The finite element model of CSPSW connected to frame beams was developed. In this model, some simplifications were made. The interaction behavior between steel plate and concrete panels was considered. The accuracy of calculated results was validated by comparing with the experimental results.The hysteretic behavior of CSPSW connected to frame beams was analyzed based on finite element software ANSYS. The influence of gap between concrete panel and steel plate, concrete panel thickness, height-to-thickness ratio and span-to-height ratio on the hysteretic behavior of CSPSW was studied. The analysis results showed that the concrete panels were effective in preventing the out-of-plane buckling of steel plate, and the performance of was almost same at different steel plate height-to-thickness ratios. The load-carrying capacity and energy dissipation ability increased with the increment of width-to-height ratio.