Anchorage length and bond stress-slip model of an untensioned wire strand placed at the interface between a half-PC beam and topping concrete
- Authors
- Jo, Min-Joo; Noh, Sam-Young
- Issue Date
- Feb-2017
- Publisher
- SPRINGER
- Keywords
- Untensioned wire strand; Pullout test; Anchorage length; Bond stress-slip relationship
- Citation
- MATERIALS AND STRUCTURES, v.50, no.1, pp.1 - 16
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS AND STRUCTURES
- Volume
- 50
- Number
- 1
- Start Page
- 1
- End Page
- 16
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/10526
- DOI
- 10.1617/s11527-016-0867-8
- ISSN
- 1359-5997
- Abstract
- The purpose of this research is to obtain the anchorage length and the bond stress-slip relationship of an untensioned seven-wire strand placed at the interface between a half-precast beam and topping concrete, applied to the precast concrete beam-column joint developed recently. From a pullout test with various embedment lengths, the anchorage lengths were determined for strands of diameters 12.7 and 15.2 mm, and also for a bundle of two 12.7 mm strands. Additionally, the bond stress-slip model was established by means of a numerical algorithm applying the strand strains measured in the pullout test. The anchorage lengths estimated numerically using the bond stress-slip model agreed well with the test results. For the interface between a half-precast concrete beam and topping concrete, a new bond condition coefficient eta(2) = 0.875 was proposed for use in the design equation for the basic anchorage length suggested in the CEB FIP Model Code.
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