Research On Seismic Performances Of Low-rise RC Shear Walls With Steel Tub

With the rapid development of high-rise biuldings in recent years, people are increasingly raising high requirements to the height of the building,safety and applicability of the buildings. It propses new structural performance requirements with the height of building rising. The size of column and shear wall need bigger and bigger to meet the requirements of pressure ratio limit in code, which is brought by the weight of the building rasised with the height of the buildings increasing. Meanwile, the dense of vertical reinforcement is becoming more and more,which brings negative impact to the construction and the space use of buildings.Compsite structure comes into being in order to meet the requirements of social development. Shear wall structure is a common structure,which shear walls are as the main lateral force resisting members and the seismic performance of it has great influence to the overall seismic performance of the buildings.The kinds of composite shear walls are so many, including steel reinforced shear wall,steel plate concrete composite shear wall,frame concrete shear wall with support and steel pipe shear wall and so on.If we plus a certain number of round steel pipes in ordinary shear walls, it becomes steel pipe concrete concrete shear wall. The new shear walls do not need special treatment for the connection of steel pipe and concrete.This is a new effective compsite shear wall,whose construction is covenienet. Experimental study on seismic performance of steel pipe concrete shear wall is so little at present.It can provide some reference for the further studies and can privide some experimental basis for the correction of the code.According to the experimental results and analysis, we do further analysis of the seismic performance of this new type of seseimic wall.We also do some research and analysis on the role and the various componets in the testing process of steel pipe high-strength concrete shear walls.This paper mainly study the seismic performance of the low-rise shear wall with steel tubes in high axial compression ratio under low reversed cyclic loading through four specimens.We also analyze failure characteristics, ultimate bearing capacity, stiffness, ductility, hysteresis properties, strenghth and energy dissipation capacity. The analysis result shows that the shear wall has good low bearing capacity, lateral stiffness, displacement ductility and energy dissipation capacity. So it is a kind of new shear wall with superior performance.