The Contrastive Analysis Of Beam-shaped And Inclined Column-shaped Transfer Structure In High-rise Building

The inclined column-shaped transfer structure as a new structural form, isbecoming more and more valuable. For example: making full use of the transfer floorspace, reducing the shearing force of transfer beam largely, minishing the size oftransfer beam, more easily to achieve the strong-joint. However, the study of inclinedcolumn-shaped transfer structure was limited to constituent component in Chongqinguniversity, few studies had made in the whole structure. And there also existed somedifference on the position of plastic hinge and the ductility of inclined column-shapedtransfer structure. So sap2000was used to make the follow study:(1)Firstly, make the anti-earthquake analysis on beam-shaped transfer structure,inclined column-shaped transfer structure and hybrid-shaped transfer structure. In thethree model, the transfer structure with inclined column had more advantages onmutation of interstory drift and equivalent lateral stiffness ratio. The mechanicalbehavior of transfer beam above on inclined column was getting better.(2)Secondly, make some changes on the position of the transfer floor and the angleof the inclined column, so as to botain some seismic performance regularity in thewhole structure. With the position increasing, the lateral rigidity below transfer floorwas getting smaller. When the position of inclined column near to beam edge, theintegral rigidity was getting soft, the equivalent lateral stiffness ratio of the next floorand transfer floor、transfer floor and the upper floor was more aligned with standard.(3)What’s more, simplified model was adopted to simulate frame-supported shearwall and small angle inclined column-supported shear wall in sap2000. According to push-over analysis with even load and inverted triangle load, this text had researchedfor yield load、ultimate load、ductility of structure、initial stiffness、order of plastic hingeetc. Comparing with beam-shaped transfer structure showed: the small angle inclinedcolumn-shaped transfer beam displayed bigger ultimate load、stronger initial stiffnessand more better ductility of structure; the order of plastic hinge was more helpful toachieve the strong-joint. And it was the most efficient structural system resistingearthquakes among all the transfer structures.