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http://dx.doi.org/10.9712/KASS.2017.17.1.059

Load Transfer Test of Spirally Reinforced Anchorage Zone for Banded Tendon Group  

Cho, Ah Sir (Dept. of Architecture & Architectural Engineering, Seoul National University)
Kang, Thomas H.K. (Dept. of Architecture & Architectural Engineering, Seoul National University)
Publication Information
Journal of Korean Association for Spatial Structures / v.17, no.1, 2017 , pp. 59-67 More about this Journal
Abstract
In this study, load transfer tests based on KCI-PS101 were conducted to verify the performance of spiral anchorage zone reinforcement for banded post-tensioning (PT) monostrands. With results, the compressive strength of spiral reinforcement was increased by about 20% than that of specimens with two horizontal steel bars and 8% than that of U-shaped bars. Advanced spiral reinforcement for corner increases compressive strength and can resist the spalling forces or fall-out effect at the corner by shear. The ratio of maximum load to amount of steel of the spiral reinforcement is about twice than that of U-shaped reinforcement. With increase of compressive strength capacity and improvement of constructability, the spiral reinforcement is considered to have advantages of promoting the performance of PT anchorage zone compared to conventional methods.
Keywords
Load transfer test; Post-tension; Anchorage; Spiral; Reinforcement;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Samsung C&T and Freyssinet Korea, "Development of Unbonded Post-Tensioned Anchor", Samsung C&T, 2007 (in Korean).
2 Cho, A. S., Jo, Y. W., Jeon, B. K., and Kang, T. H.-K, "Development and Performance Test for Unbonded Post-Tensioned Anchor", Journal of the Korea Concrete Institute, Vol.27, No.1, 2015, pp.11-20 (in Korean).   DOI
3 Kim, J.-K., Lee, P.-G., and Jang, S.-Y., "Experimental Study on the Performance of Korean PS Anchorage System in terms of Load Transfer Test", Korea Concrete Institute Spring Conference, Vol.21, No.1, 2009, pp.37-38 (in Korean).   DOI
4 Kim, J.-K. and Lee, P.-G., "Review on the Behavior and the Structural Design of Post-Tensioned Anchorage Zone", Korea Concrete Institute Fall Conference, Vol.22, No.2, 2010, pp.301-302 (in Korean).
5 Joint ACI-ASCE Committee 423,Recommendations for Concrete MembersPrestressed with Unbonded Tendons (ACI423.3R-05), American Concrete Institute,USA, 2005, 21pp.
6 Post-Tensioning Institute, Guide for Design of Post-Tensioned Buildings (PTI DC20.9-11), Post-Tensioning Institute, USA, 2011, 73pp.
7 Korea Concrete Institute, "Post-Tensioned Building Systems", KCI Manual of Concrete Practice, Kimoondang, 2013, 131pp. (in Korean).
8 Korea Concrete Institute, "Structural Design and Construction of Prestressed Concrete Buildings and Plant Structures", KCI Manual of Concrete Practice, Kimoondang, 2015, 156pp. (in Korean).
9 Korea Concrete Institute, Construction Specification and Commentary of Concrete Structures, Korea Concrete Institute, 2009, 762pp. (in Korean).
10 ETAG 013, Guideline for European Technical Approval of Post-Tensioning Kits for Prestressing of Structures, European Organization for Technical Approvals, Belgium, 2002, 136pp.