Experimental Study On Seismic Behaviors Of Inclined Column-shaped Transfer Floor Of Framed Short-leg Shear Wall Structures With Different Arragement Of Short-leg Shear Wall

Nowadays, there is still a shortage of theoretical studies on frame-supported short-leg shearwall structure, though it has been widely applied in present projects. In the practical project, it is inevitable that short-leg shear wall is completely depart from frame pillars, and short-leg shear wall directly support on the transfer beam when arrange for the structure layout because the number of short-leg shearwall is so many. The short-leg shear wall of such arrangement for the transfer structure, which in the difference of mechanical characteristics and seismic behaviors when compared to the traditional arragement. And what's the degree of difference between the two arrangemeng of short-leg shear wall. Therefore, in view of such idea, basing on the series of experimental study on framed short-leg shear wall inclined column-shaped transfer plane that have aleardy finished. This thesis carries out the pseudo static test, which are subjected to vertical loads and horizontal cyclic loads, respectively on two specimens of the framed short-leg shear wall inclined column-shaped transfer plane framework with the different arrangemeng of short-leg she arwall. Then, observe and record the cracking load, yield load and the development of cracks, measure the structure distortion and strain of steel in key parts of the two specimens.According to test phenomenon of specimens and the strain of steel bars development regulation ,obtaining the two kinds of transfer structures'basic behavior regulation.Baseing on experiment and results of analysis, then make a comparative analysis on the seismic parameters of the stress mechanics, bearing capacity, damage shape, hysteretic characteristics, distortion ability and ductility factor, seismic dissipation and damage mechanism when the transfer structure under vertical load and horizontal load.Obtaining the influence on the structures behavior and seismic behavior of the specimens with different wall's arrangement.Rational design suggestions and constructional requirements are proposed to the application of frame-supported short-leg shear wall transfer structure in practical projects.In this paper, the results of the experiment study show that the arrangemengt of short-leg shear wall has deep influence on the structures behavior and seismic behavior of the framed short-leg shear wall inclined column-shaped transfer plane framework.Compared to the specimen of W9-4, the specimen of W11-2 has poor hysteretic characteristics, ductility and distortion ability, seismic dissipation,but the whole transfer beam structure can also satisfy the ductility requirements of the specimen of W11-2. In such arrangement of shear wall of W11-2, comparing to the lefe shear wall and right shear wall, the middle shear wall has more serious damage of W11-2, and the transfer floor also haven't appeared serious damage. It can be concluded that short-leg shear walls of shear capacity design should be strengthen when taking designing calculation in the specimen of W11-2, especially the middle short-leg shear wall whose shearing effect is quite serious. This paper suggest that the middle short-leg shear wall use oblique crossing steel reinforcement which can improve the shear capacity of the middle shear wall, and improving the ductility and seismic behavior of the transfer structure.