The Mechanical Behavior And Elastic-plastic Analysis On Inclined Column-shaped &Beam-shaped Transfer Floor In Frame-supported Short-leg Shear Wall

The frame-supported short-leg shear wall is a combination of short leg shear-wall and frame-supported shear wall. According to the specialty of short-leg shear wall, the frame-supported short-leg shear wall is quite different to normal frame-supported shear wall in structural forms and load-bearing characteristics. Although it has been used widely, the theoretic research of this structure needs to be perfected. In the frame-supported short-leg shear wall structure, the application of beam-shaped transfer structure is the widest. The beam-shaped transfer structure has much excellence such as good mechanical behavior, consummate theory and technology of design and simple structure. But it also has some weakness, such as ,The comparative rigidity of transfer-stories is small, easy to engender structure weakness stories;The section dimensions of the transfer beam is too large to make use of the story height. As a recent new transfer structure, inclined column-shaped transfer structure is widely used in the actual construction because the load transfer is direct and lateral rigidity of transfer-stories is large .Based on these ideas above, this paper preliminarily explored the whole seismic performances of the sort of structure, according to the finite element analysis of practical project of beam-shaped transfer structure,the change of transfer story location and added inclined-column at the bottom of short-leg wall. Then,this paper introduced the basic principles and procedure of Push-over anlysis method, and explorded the influence of hinge modes and location,the simplified model of shear wall and the loading ways of the horizontal forces on Push-over anlysis method. On the basis of this, apply to Push-over anlysis on two experimental models and two whole structures,including the frame-supported short-leg shear-wall beam-shaped transfer structures and the frame-supported short-leg shear-wall inclined column-shaped transfer structure, and compare the results with experimental results. At the same time, contrast and analyze the ductility, energy dissipation capability, and intensity & stiffness attenuation of the two sorts of transfer structures , according to the anlysis data. And appraise the seismic behavior on column-shaped transfer structure and inclined column-shaped transfer structure.The main points of this paper as follows:①T he frame-supported beam whose middle station supported short-leg wall is similar to the beam under vertical loads, and it's middle station rise large moment and shear.②Owning to the interaction of the slab on the side of the transfer beam, the secondary internal force of frame-supported beam is more less than the predominant one.③With the upper shift of transfer story position, not only transfer story but also the next one easily become the weakness story.④Lateral rigidity of inclined column-shaped transfer-stories is large, making it difficult to engender structure weakness stories.⑤Applying to Push-over anlysis on the simplified model of shear wall is an effectively anlysis method.⑥Compare with the beam-shaped transfer structure, the inclined column-shaped transfer structure can get better seismic behavior. So, it is a new type transfer structure worthy of popularizing.