Experimental Research On Inclined Column Transfer Structure Of Framed Short Shear Wall Under Low-cyclic Reversed Loads

With the development of high-rise buildings of this country in recent years,modern buildings have a tendency to bring into the use of transfer structures in multi-story and high-rise buildings.Inclined column transfer is a new transfer structure,which can been seen as the combination of truss transfer and beam transfer,also can been named by local truss transfer.And inclined column transfer has been applied to actual engineering universally.Transfer story structure is a hot problem in the study of seismic design of high-rise buildings,but experimental study on seismic behaviors of inclined column transfer structure is still less. Under such background,based on two different inclined column transfer structure specimens under low-cyclic reversed loads, seismic behaviors of this kind of transfer structure have been studied and design advision has been put forward in this paper. According to the test results and corresponding finite element analysis, fundamental behaviors of the specimens are achieved, which include cracking load ,yield load,limited capacity, stress distributions, occurrence and development of cracks and final failure mode of the specimens.Furthermore, the load-displacement hysteretic curves and ductility factor of the specimens are also gained. The test on inclined column transfer models under low-cyclic reversed loads show that the specimens finally lost its bearing capacity because of explosion of concrete in compressed district after the appearence of ductile hinge in the transfer beam.It also should be focused on by designers that load transfer beam is failed by shear badly,which tell us that the beam upper tansfer beam should be strengthened properly. From analysising of load-displacement hysteretic curves of the tests, studying of seismic behavior of inclined column transfer structure system under low-cyclic reversed loads,a conclusion can been drew that this structure system can satisfy the bearing seismic capacity and has excellent ductility as long as designed properly. At the same time, an applicable method of designing for this structure system is provided in this paper.