Experimental Study On Mechanics Performance Of Steel Reinforced Concrete T-Shaped Short Columns

Special-shaped column dispersed the raised angle on the walls of traditional rectangle column framestructure to the walls, which make the length of special-shaped column limb longer than rectangle column,the width of it shorter than rectangle column and reduce shear span ratio. In order to make it convenient forconstruction, the thickness of beam must be equal to or smaller than the thickness of column limb, whichlimited the width of the beam; In order to obtain enough strength, the height of beam must been increased,Which reduce shear span ratio further and deteriorate the horizontal press capacity. How to increasehorizontalpresscapacityin the same area ofthe section, this article studied the performance ofSRCTSSC inlittleshearspanratiothroughexperiments,inwhichsteelbarsareaddedinRCTSSC.Make the design of SRCTSSC. The main studyfocuses on the impact of axial pressure ratio(nt), hoopedreinforcement ratio(ρv), shear span ratio(λ) and steel ratio(ρss) to the shear strength and the earthquakeresistance ability of SRCTSSC. At the same time, two different axial pressures RCTSSC were designed tocomparewithSRCTSSC.The experimental study of shear strength of SRCTSSC is carried out in the paper. it can be concludedthat the shear strength of SRCTSSC is increasing with the accretion of nt,ρvandρss, but the degree ofaccretion is thinner when nt is bigger to a certainty value, and that the shear strength of SRCTSSC isdecreasing with the accretion ofλ;The main factorsthataffectthe shearing strengthformula of SRCTSSC isput forward, which based on the superposed strength method. The calculated results are corresponding withthe test results very well. The shear strength of SRCTSSC is increased in a large degree when steel bars areaddedin.The experimental study of earthquake resistance ability of SRCTSSC is carried out in the paper. it canbeconcludedthatthehystereticloopsoftheSRCTSSCarefullandthehystereticbehaviorsareimprovedandthat the displacement ductility is increasing with the accretion ofλ,ρvandρss, but decreasing with theaccretion of ntand the degree of variety in high axial pressure ratio is bigger than in low axial pressure ratio.it also can be concluded that The displacement ductility and the capacity of energy dissipation are enhancedwhensteelbarsareaddedin.