| Title |
Analytical Study on Ribs and Lengths of Splice Sleeve Influencing Structural Performance |
| Authors |
이상섭(Lee, Sang-Sup) ; 부윤섭(Boo, Yoon-Seob) ; 신상민(Shin, Sang-Min) |
| DOI |
https://doi.org/10.5659/JAIK.2023.39.8.235 |
| Keywords |
Hybrid splice sleeve; Spacing of rib; Profile of rib; Length of sleeve; Finite element analysis |
| Abstract |
This study aims to examine how the performance of mechanical rebar splices is impacted by the ribs and length of hybrid sleeves, utilizing
the finite element (FE) method. The cylindrical hybrid splice sleeve is crafted through machining, composed of SM45C material, featuring an
inner diameter of 31.2 mm and a thickness of 4.3 mm. In the FE models, the rebar’s steel grade is SD600 with a diameter of 22 mm
(D22), while the grout’s compressive strength is set at 100 MPa. To simulate the nonlinear behavior and fracture of the rebars, the analysis
employs the true stress-strain relationship and ductile damage conditions. Moreover, contact interactions between the rebar, grout, and sleeve
surfaces are modeled in Abaqus/Explicit using an exponential pressure-overclosure relationship and kinetic friction. The analysis parameters
under scrutiny encompass the spacing and profile of the sleeve rib and the sleeve length. Results indicate that the sleeve rib spacing should
not exceed twice the rebar rib spacing, and the sleeve length should be more than 6.0d to induce rebar fracture as the failure mode. When
considering the profile of the sleeve rib, the ability to resist slippage between the sleeve and grout is most effective in the sequence of
semicircular, trapezoidal, and rectangular shapes. |