Experimental analysis of seismic behavior of 600 MPa RC T-shaped columns
Rong Xian , Duan Weiwei , Wang Hao
DOI:10.11835/j.issn.1674-4764.2017.02.019
Received August 25, 2016,Revised , Accepted , Available online July 04, 2017
Volume ,2017,Pages 148-154
- Abstract
600 MPa steel bar was a new type of high-strength reinforcing bar. Seven T-shaped column specimens varying in stirrup ratios, axial compression ratios and steel strength were tested under low cyclic loading to investigate the feasibility of using this type of reinforcement in specially shaped column. Behaviors in bearing capacity, displacement, hysteretic behavior, skeleton characteristic, rigidity degradation and energy dissipation were investigated to analysis the seismic performance of columns. The results showed that 600 MPa RC T-shaped columns had favorable deformation capacity and bearing capacity. Improving stirrup ratios could effectively improve the seismic performance. With the increase of axial compression ratios, the bearing capacity of columns was bigger, but the deformation capacity deteriorated. With the improvement of the strength of steel, bearing capacity, deformation capacity significantly increased.