Headed bars in simulated exterior beam-column joints of UHPFRC
- Title
- Headed bars in simulated exterior beam-column joints of UHPFRC
- Author
- 유은종
- Keywords
- anchors & anchorages; bond; reinforcement
- Issue Date
- 2018-08
- Publisher
- ICE PUBLISHING
- Citation
- MAGAZINE OF CONCRETE RESEARCH, v. 70, no. 19, page. 1016-1026
- Abstract
- Ultra-high-performance fibre-reinforced concrete (UHPFRC) exhibits improved compressive and tensile strengths considerably superior to those of conventional concrete. While these characteristics can significantly reduce the cross-sectional area of the member, the space for accommodating development lengths of straight or hooked bars is deficient. A headed bar can be a viable option for this problem. The anchorage strengths of headed bars were evaluated by simulated exterior beam-column joint tests where the joints were cast of 120, 150 or 180 MPa UHPFRC. A headed bar with only 4d(b) embedment length in 120 MPa UHPFRC can develop a yield strength of 600 MPa. The effects of embedment length, bar diameter and compressive strength of UHPFRC on the anchorage strength of headed bars are investigated. From a regression analysis, assuming that the anchorage strength is proportional to (f(c)')(alpha) a model for predicting the anchorage strength of headed bars in UHPFRC is developed.
- URI
- https://www.icevirtuallibrary.com/doi/10.1680/jmacr.17.00355https://repository.hanyang.ac.kr/handle/20.500.11754/119669
- ISSN
- 0024-9831; 1751-763X
- DOI
- 10.1680/jmacr.17.00355
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ARCHITECTURAL ENGINEERING(건축공학부) > Articles
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