MECHANICAL PERFORMANCE AND ULTIMATE BEARING CAPACITY OF STEEL REINFORCED HIGH-STRENGTH CONCRETE SHEAR WALL UNDER CYCLIC REVERESD LOADING

To investigate the seismic bearing capacity and deformation performance of steel reinforced high-strength concrete shear walls (SRHCSW), 6 specimens of T-shaped SRHCSW were designed for cyclic reversed loading tests. The SRHCSW exhibits bending shear failure and shear diagonal compression failure in loading tests. The hysteretic loops are plump indicating higher energy dissipation capacity, but poor ductility was observed in the hysteretic loops. According to the performance level definition in seismic design code, the performance of SRHCSW can’t meet the deformation requirement. Based on research results of steel reinforced concrete shear walls, some suggests were made for improving the deformation capacity. Finally, the formulas for calculating the anti-crack capacity and shear capacity were derived. The calculation results are in good agreement with test results.