Research On Hysteretic Behavior Of Steel Reinforced Concrete Short-limp Shear Walls

Steel reinforced concrete short-limp shear walls is a type of composite structure, which embeded profied bar on both sides. Not only it can take material advantage of the concrete and steel ,but also combine predominance of steel reinforced concrete system and short-limp shear wall system. In engineering practice, steel reinforced concrete short shear wall structure system has a wide range of applications and good earthquake-resistant behavior, but in recent years the comprehensive performance of its domestic research is still in its early stages, a lot of theory and calculation method still needs further discussion.Grounded on the theoretical analysis, we make use of ANSYS to conduct the finite element analysis of the steel-concrete composite short-limp shear wall with solid modeling. we establish fourteen F.E models with different parameters. For considering the behavior influence of the short-limp shear wall by becoming type of structure, steel ration,concrete strength, aspect ration and shear wall body reinforcement ratio etc. According to the results of finite element calculation in behaviors under cyclic loading structure hysteretic performance, stress of steel and concrete, and the failure mechanism of components analyzed systematically. The analytical result show that in the short-limb walls with the concealed column can greatly improve steel structure stiffness and bearing capacity, and bearing capacity increased with the enhance of steel ratio; The total steel quantity of the same circumstances, implant H-shape steel short-limp shear walls are better than the mechanical properties of the implant channel steel concealed column on earthquake-resistant, match short-limp shear walls has best ductility when steel ratio of 3.4%, bearing capacity growth reduce when steel rate more than 4.5%. the bearing capacity and energy dissipation capacity of the steel reinforced concrete short-limp shear walls increase obviously when the concrete C40 above, therefore we suggest using high label concrete when design. the steel reinforced concrete short-limp shear walls for the main failure pattern in bend destructive under low reversed cyclic loading, short-limp shear walls main stress of steel concealed column in state of monaxial tension and compression, the structure of the shear is mainly assume by the concrete. With the decrease of the shear aspect ratio, structure bearing capacity improved, but obviously degradation, and ductile shear force on the influence of specimens damage increase gradually. To increase shear wall body reinforcement ratio will improve bearing capacity of steel reinforced concrete short-limp shear walls, but the bearing capacity make little impact on its stiffness, when increase reinforcement ratio more than 1%, the ductility capacity reduce.The paper analyzes bearing capacity of the steel reinforced concrete short-limp shear walls under the monotone circle load deeply. The result are very useful for revising design specifications and guiding design of engineering. This paper will play a basic role in the further study on steel reinforced concrete short-limp shear walls.