Experimental Research On Mechanical Behavior Of Concrete Shear Walls Under Tension And Shear

Super high rise buildings resist lateral forces through the layout of shear walls,and in the case of an earthquake or a rare earthquake,concrete core tube shear wall of super high rise building can bear the combined action of horizontal load and vertical pulling force.Research results for shear wall,the mechanical properties of the axial compression and eccentric compression are mainly studied,the research on the mechanical behavior and failure mechanism of RC shear wall under the action of tension and shear force is not yet mature,and in our country the shear bearing capacity formula of the tensile shear wall is put forward by the standard,which has already considered the influence of the tension,but the calculating formula is based on the shear test data of shear wall,the reliability of the formula is still to be verified.As a result,experimental study on the mechanical behavior of shear wall under axial tensile and shear force.Five concrete shear walls are designed in the experiment,one sheets are configured to slip resistant steel,the rest parameters are exactly the same.The low cycle reciprocating load test of RC shear wall under the action of tension and shear force is carried out,the failure characteristics,hysteretic behavior,bearing capacity,stiffness and energy dissipation capacity of the concrete shear wall are studied,and the effect of slip resistant steel on the mechanical behavior of concrete shear wall.It is shown that the axial tension decrease the shear capacity of concrete shear wall from the results,shear capacity of shear wall specimens is about 10%~30%.The shear capacity of the shear wall was improved by the configuration of the slip resistant steel,shear capacity increased by about 24%.Based on the test of low cycle reciprocating load of concrete shear wall under tension and shear force,study design method of shear bearing capacity of concrete shear wall under vertical tension and horizontal shear force,and the reliability of the calculation formula of shear capacity of shear wall is verified.It is shown that the calculation formula of shear capacity of shear wall meet the safety requirements of engineering structure design from the results.Finite element analysis of concrete shear wall subjected to tension and shear force,and compared with the experimental results,in good agreement with the two.