To investigate the tensile performance of a partially grouted sleeve connection,a finite element model of the connection was created using ABAQUS software.The effects of parameters including rebar diameter,grout strength,insufficient anchorage length,and eccentric placement of reinforcement were studied.The research results show that the established finite element model can effectively simulate the entire tensile process of the partially grouted sleeve connection,and the analysis results are in good agreement with experimental results.With increasing rebar diameter,both the ultimate load capacity and ultimate displacement of the partially grouted sleeve connection increase.When the anchorage defect of the rebar is greater than 2 times its diameter(2 d),there will be bond slip between the grout and concrete.To prevent the crushing of grout,it is recommended that the grout strength should be greater than 100 MPa.The value of stress at the strengthening phase slightly reduces along the direction of the reinforcement for the sleeve connection with the eccentric placement of reinforcement.
关键词
半灌浆套筒/抗拉伸性能/有限元分析/破坏形式
Key words
partially grouted sleeve/tensile performance/finite element analysis/failure mode
维普
万方数据