Researh On Seismic Behavior Of Steel Coupling Beam And Composite Shear Wall Connection Under Simulated Earthquake Action

Instead of concrete coupling beam, a new type of hybrid shear walls structure with steel coupling beam exhibits excellent performance under horizontal seismic action. According to the existing relevant experiments and research conclusions, the new hybrid system can avoid brittle shear failure of the coupling beam under strong earthquake, which ensures constant energy dissipation and multiple seismic-proof. However, the current investigation is not comprehensive enough compared to the complexity of the construction engineering. Especially for the type of the steel beam-composite shear wall and the study on seismic behavior of its connection region. These are resons why there are difficulties of the application and generalization in construction engineering.Aimed at composite shear walls, the steel coupling beams-composite shear wall connection—end plate with high-strength bolts(hereinafter referred to as "end plate-bolt connection") was proposed after summarizing related research.In preliminary work, seismic behaviors of steel beam of end-plate connection were investigated through quasi-static test. The steel coupling beams exhibits seismic performance according to the test results. In order to get further understanding of the seismic performance of end-plate connection area, the following work were conducted in this paper:① Two groups of 4 specimens with plate-bolt connection were designed refering to related specifications. The test parameters are clean span of steel coupling beam and shear wall axial load ratio.② The scheme of quasi-static test was determined, including loading scheme, the measurement content and scheme.③ Test data was processed and preliminary judgments of seismic performance of end-plate connection area were made in terms of hysteretic curves, skeleton curves, bearing capacity, displacement ductility, energy dissipation and so on.④ In order to further understand the behavior of the connection area, nonlinear analysis was conducted with ABAQUS.⑤ The objective, significance and deficiencies of this study was summarized and evaluated in order to facilitate the further research.The end-plate connection area of the specimens exhibit excellent seismic performance, the typicial failure model are: mian vertical crack appears between the inner edge of the H steel column and the wall, main diagonal cracks appear at connection area and the fracture of the end plate...