Experimental analysis of bond-anchorage properties between 600 MPa high strength reinforcement and concrete
Li Yanyan , Li Xiaoqing , Su Hengbo
DOI:10.11835/j.issn.1674-4764.2017.02.003
Received May 04, 2016,Revised , Accepted , Available online July 04, 2017
Volume ,2017,Pages 19-25
- Abstract
Pull-out tests were carried out on 72 concrete specimens reinforced with 600 MPa high strength reinforcement to investigate the bond-anchorage properties between 600 MPa high strength reinforcement and concrete. Failure pattern and bond stress distribution of specimens were studied, respectively. The bond-slip constitutive relations of 600 MPa high strength reinforcement were established through basic form of bond-slip and position function. Through establishing the calculation formula of ultimate bonding strength for 600 MPa high strength reinforcement, bond-anchorage length was established via reliability analysis of JC. The results showed that the failure pattern, bond stress distribution between 600 MPa high strength reinforcement and other strength reinforced bars no obvious difference. Basic anchorage length formula of GB50010-2010 still can be applied to 600 MPa high strength reinforcement.