Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
권호 표지
DOI QR코드

DOI QR Code

Clip-type Binding Implement Effect on Anchorage Behavior of 90-Degree End-Hooked Transverse Reinforcement in Reinforced Concrete Columns

클립형 연결장치로 결속된 90도 갈고리를 갖는 띠철근의 정착거동

  • Received : 2020.07.30
  • Accepted : 2020.08.27
  • Published : 2020.08.30
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study is to secure the same or more structural performance and constructability for the details of hooks cross-constructed at 135 degrees used as external-ties standard detail in RC columns, therefore, to the purpose of improving constructability, the clip-type binding implement was suggested and A total of 28 pull-out specimens were prepared with the parameters of concrete compressive strength and clip-embeded length, clip installation location to examine the anchorage behavior of the clip-type binding implement. The experiment was carried out. The results of the experiment confirmed that the anchorage strength of the clip-type binding implement was higher than the details of hooks cross-constructed at 135-degree regardless of the diameter of tie and concrete strength, embeded clip length, clip installation. and The 90-degree end hook with clip-type binding implement was showed a similar an anchorage behavior of 135-degree end-hooked transverse reinforcement, consequently, The 90-degree end hooked with clip-type binding implement is evaluated to be the same anchorage behavior and performance as standard 135-degree end hook detail.

이 연구의 목적은 철근콘크리트 기둥에서 외부띠철근 상세로 이용되는 갈고리 양단 135도 교차 시공 상세에 대해, 대등한 구조적 성능을 확보하면서, 동시에 시공성을 개선할 목적으로 클립형 연결장치로 띠철근 갈고리 보강하는 방법을 제시하였다. 제안한 클립형 연결장치로 결속한 띠철근의 정착거동 및 강도를 파악하기 위해 콘크리트 압축강도, 클립형 연결장치의 묻힘길이, 설치 위치를 주요 변수로 28개 인발 실험체를 제작하여 실험하였다. 실험결과, 정착강도는 콘크리트 압축강도, 띠철근 직경, 클립의 묻힘길이, 설치 위치에 관계없이 클립형 연결장치로 결속하는 경우, 표준 갈고리 상세보다 모두 높게 나타났고 표준 갈고리 상세의 정착거동과 유사한 거동을 보여주었다. 그러므로, 90도 갈고리에 클립형 연결장치로 결속하는 상세는 표준 갈고리 상세와 대등한 정착거동 및 성능을 발휘할 수 있는 것으로 평가할 수 있다.

Keywords

References

  1. Kim, W. W., and Yang, K. H. (2015), Effect of Bendign Angle and Embedment Length on the Bond Characteristics of V-shaped Tie Reinforcement, Journal of Architectural Institute of Korea, 465-471.(In Korean)
  2. Korea Concrete Instiute. Standard Specificaion for Concrete. Kimoondang Publishing Company. 2017.
  3. American Concrete Instiute. Building Code Requirements for Sturtural Concrete and Commentary. ACI 318-14 2014.
  4. Lee, YH., An Experimental Study on the Strengthe and Ductility of High-Strength Concrete Columns Confined by Lateral Ties Under Axial Loads[dissertation] Seoul : Chung-Ang University; 2001. 143.
  5. Chun SC, Kim DY(2001). Design Considerations and Pull-Out Behavior of Mechanical Anchor Reinforcement, Journal of the Korea Concrete Institude, Dec;13(6):593-601.(In Korean)
  6. Comite Euro-International Du Beton(1991). Ceb-fip Model Code 1990. Thomas Telforld. 1991. 437 p
  7. Kim BJ, Jin IG, Choi HB, Kang KI (2007) The Effect of Form Oils on Bond Characteristics of Reinforced Concrete Members, Journal of Architectural Institute of Korea, Dec;23(12):89-96. (In Korean)
  8. Hakuto, S. (2000). Seismic performance of reinforced concrete columns with 90 degree end hooks for shear reinforcement under high speed loading. In Proceedings 12th world conference on earthquake engineering Auckland, New Zealand, Paper (No. 1-7).
  9. Park, K. Y., Kim, S. W.(2018), Tie Hook Reinforcement Annealing Prevention Device, Patent Public Number 10-2018-0059116, Korean Intellectual Property Office.