Journal of the Korea Concrete Institute (콘크리트학회논문집)

Korea Concrete Institute (한국콘크리트학회)
권호 표지
DOI QR코드

DOI QR Code

Analytical and Experimental Studies on Splice Sleeves for SD500 Rebars

SD500 철근용 충전식 슬리브 철근이음에 대한 해석 및 실험적 연구

  • Received : 2012.09.07
  • Accepted : 2013.02.01
  • Published : 2013.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

Splice sleeves for HD25 and HD32 rebars with yield strength 500 MPa were studied experimentally and analytically. The shapes of sleeve was examined with nonlinear finite element analyses. A total of 18 specimens were tested with test variables of rebar types, sleeve lengths, mortar compressive strengths, and rebar development lengths. Three identical specimens per each variable were tested in order to prevent any test errors. After tests, numerical studies with a nonlinear finite element method were conducted to evaluate the test results. Experimental studies with 18 specimens showed that the sleeves of this study satisfies the code requirement. It was found that the strength of mortar and the bar development length within the sleeves did not affect to the load-carrying capacity of sleeves.

이 연구에서는 설계기준항복강도 500 MPa의 HD25 철근과 HD32 철근에 사용할 수 있는 스플라이스 슬리브에 대한 실험 및 해석 연구를 수행하였다. 비선형 유한요소해석을 실시하여 적정 형상을 선정하였으며, 총 18개의 실험체를 제작하여 구조 실험을 실시하였다. 실험체는 철근의 종류, 슬리브의 길이, 그라우트 강도, 철근의 정착길이 등을 변수로 하였다. 동일한 변수의 실험체를 3개씩 제작하여 실험에서 발생 할 수 있는 오차를 해소하고자 하였다. 그리고 비선형 유한요소해석을 실시하여 구조실험 결과와 비교하였다. 총 18개의 실험체에 대한 인장실험 결과 모든 실험체가 구조설계기준에서 요구하는 조건을 만족함을 보였다. 그라우트의 강도와 철근의 정착길이는 슬리브 실험체의 강성 및 강도에 거의 영향을 미치지 않았다.

Keywords

References

  1. Architectural Institute of Korea, Building Structure Design Code, 2009, 769 pp.
  2. ACI Committee, 318, Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary, American Concrete Institute, Farmington hills, Michigan, 2008, 473 pp.
  3. Kim, H. K., "Study on Load Transfer Process and Design of Mortar Grouted Splice Sleeve," Journal of the Architectural Institute of Korea, Vol. 20, No. 12, 2004, pp. 19-26.
  4. Daedong MS and Kangwon University, Development of Splice Sleeves for SD500 Rebars, 2007, 124 pp.
  5. Ahn, B. I., Kim, H. K., and Park, B. M., "Confining Effect of Mortar Grouted Splice Sleeve on Reinforcing Bar," Journal of the Korea Concrete Institute, Vol. 15, No. 1, 2003, pp. 102-109. https://doi.org/10.4334/JKCI.2003.15.1.102
  6. Kim, H. K., "Comparative Evaluation of Ductility in Mechanical Sleeve Reinforcing Bar Splice Filling High- Strength Mortar," Journal of the Architectural Institute of Korea, Vol. 28, No. 7, 2012, pp. 41-48.
  7. Kim, H. K., "Analysis about the Estimation Method of Failure Mode in Steel Pipe Sleeve Splice," Journal of the Regional Association of Architectural Institute of Korea, Vol. 12, No. 4, 2010, pp. 279-286.
  8. Kim, H. K., "Evaluation on Stiffness of Mechanical Sleeve Bar Splice Filling High-strength Mortar Under Monotonic Loading," Journal of the Korea Institute for Structural Maintenance and Inspection, Vol. 16, No. 4, 2012, pp. 79-88. https://doi.org/10.11112/jksmi.2012.16.4.079
  9. Kim, H. K., "Evaluation on Stiffness of Mortar-filled Sleeve Splice Using Estimation Method of Failure Mode," Journal of the Korea Institute for Structural Maintenance and Inspection, Vol. 16, No. 1, 2012, pp. 27-34. https://doi.org/10.11112/jksmi.2012.16.1.027