Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Finite Element Analysis on the Effect of Splice Sleeve Diameter and Grout Strength

스플라이스 슬리브 직경과 그라우트 강도의 영향에 대한 유한요소해석

  • Lee, Sang-Sup (Korea Institute of Civil Engineering and Building Technology) ;
  • Boo, Yoon-Seob (Korea Institute of Civil Engineering and Building Technology) ;
  • Shin, Sang-Min (Korea Institute of Civil Engineering and Building Technology)
  • Received : 2023.03.28
  • Accepted : 2023.06.20
  • Published : 2023.07.28
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Abstract

In this study, a finite element model and analysis results are presented to investigate the effect of the sleeve diameter and the strength of the grout on the behavior of the cylindrical half-grouted splice sleeve. The half-grouted splice sleeve, consisting of a threaded end and a grouted sleeve end, is a mechanical connector that can be made by milling instead of casting. The grade of rebar is SD600 D22, and the material of the sleeve is SM45C. The development length of rebar inside the sleeve is 7.5d (d: rebar diameter), which is the same in all analysis models. Additionally, true stress and ductile damage conditions are used to simulate the nonlinear behavior and fracture of rebars. The structural behavior of the spliced rebar system for four sleeve diameters (cover thickness rebar: about 3, 6, 12, 18 mm) and two types of grout compressive strength (60, 100 MPa) is calculated using finite element analysis software Abaqus/Explicit. As a result of the analysis, the effect of sleeve diameter size on the failure mode, the yield length of the rebar, and the yield of the sleeve cross-section is significant, but the effect of grout strength on the structural behavior of the splice sleeve is very small.

Keywords

Acknowledgement

이 연구는 2023년도 한국건설기술연구원(KICT)의 연구비 지원에 의한 결과의 일부임. 과제번호 [KICT] 20230176-001

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