STUDY OF SEISMIC PERFORMANCE OF RC SHEAR WALL WITH 1000 MPa HIGH-STRENGTH REBARS

Experimental studies on four shear wall specimens under low-cyclic reversed loading were carried out，in which high-strength rebar with the yield strength of 1 000 MPa were used in boundary embedded columns of reinforced concrete shear walls． The bending bearing capacity，ductility， energy dissipation capacity and the failure characteristics of high-rise shear wall with high-strength rebar were researched． The results showed that compared to ＲC shear wall with normal-strength steel， the bending bearing capacity of specimens with high-strength steel used as longitudinal reinforcement in boundary concealed columns was increased， and the yield and ultimate displacement were improved greatly． Finally， the calculation formula of horizontal bearing capacity of high-strength reinforced concrete shear wall with concealed column was given． The analysis results showed that the calculated values were in good consistent with the experimental data．