Title:
Cyclic Behavior of Columns with Proposed Arrangement of Longitudinal Reinforcement
Author(s):
Yu-Chen Ou, Cong-Thanh Bui, Yu-Ting Lin, and Sheng-I Yen
Publication:
Structural Journal
Volume:
122
Issue:
3
Appears on pages(s):
147-159
Keywords:
bond splitting; columns; high-strength reinforcement; large bar; longitudinal reinforcement; seismic
DOI:
10.14359/51745668
Date:
5/1/2025
Abstract:
This research proposes a standardized arrangement of longitudinal
reinforcement using Grade 690 MPa (100 ksi) high-strength steel
and D32 (No. 10) or D36 (No. 11) large-diameter threaded bars
to alleviate reinforcement congestion and construction difficulties.
Four full-scale column specimens with the proposed standardized
arrangement were tested using double-curvature lateral cyclic
loading to examine their seismic performance. Test results showed
that all the columns exhibited a combined axial and flexural failure
mode, with ultimate drift ratios ranging from 4.07 to 5.98%, ratios
of measured to nominal moment strength based on actual material
strengths ranging from 1.18 to 1.51, and relative energy dissipation
ratios satisfying the requirement of ACI 374.1-05. No shear or
bond-splitting failures were observed. Based on the test data from
this research and the literature, two modifications were proposed
in the calculation of ℓd to relax the requirement of 1.25ℓd ≤ ℓu/2 as
required by ACI 318-19.
Related References:
1. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19) (Reapproved 2022),” American Concrete Institute, Farmington Hills, MI, 2019, 624 pp.
2. Rautenberg, J. M.; Pujol, S.; Tavallali, H.; and Lepage, A., “Drift Capacity of Concrete Columns Reinforced with High-Strength Steel,” ACI Structural Journal, V. 110, No. 2, Mar.-Apr. 2013, pp. 307-317.
3. Trejo, D.; Link, T. B.; and Barbosa, A. R., “Effect of Reinforcement Grade and Ratio on Seismic Performance of Reinforced Concrete Columns,” ACI Structural Journal, V. 113, No. 5, Sept.-Oct. 2016, pp. 907-916. doi: 10.14359/51689015
4. Barbosa, A. R.; Link, T.; and Trejo, D., “Seismic Performance of High-Strength Steel RC Bridge Columns,” Journal of Bridge Engineering, ASCE, V. 21, No. 2, Feb. 2016, p. 04015044. doi: 10.1061/(ASCE)BE.1943-5592.0000769
5. Su, J.; Wang, J.; Li, Z.; and Liang, X., “Effect of Reinforcement Grade and Concrete Strength on Seismic Performance of Reinforced Concrete Bridge Piers,” Engineering Structures, V. 198, Nov. 2019, Article No. 109512. doi: 10.1016/j.engstruct.2019.109512
6. Ding, Y.; Wu, D.; Su, J.; Li, Z.-X.; Zong, L.; and Feng, K., “Experimental and Numerical Investigations on Seismic Performance of RC Bridge Piers Considering Buckling and Low-Cycle Fatigue of High-Strength Steel Bars,” Engineering Structures, V. 227, Jan. 2021, Article No. 111464. doi: 10.1016/j.engstruct.2020.111464
7. Barcley, L., and Kowalsky, M., “Seismic Performance of Circular Concrete Columns Reinforced with High-Strength Steel,” Journal of Structural Engineering, ASCE, V. 146, No. 2, Feb. 2020, p. 04019198. doi: 10.1061/(ASCE)ST.1943-541X.0002452
8. Wu, D.; Ding, Y.; Su, J.; Li, Z.-X.; and Liu, Z., “Quasi-Static Tests and Seismic Fragility Analysis of RC Bridge Piers with High-Strength Steel Bars and High-Strength/Ultra-High Performance Concrete,” Engineering Structures, V. 297, Dec. 2023, Article No. 117033. doi: 10.1016/j.engstruct.2023.117033
9. Ou, Y.-C.; Alrasyid, H.; Haber, Z. B.; and Lee, H.-J., “Cyclic Behavior of Precast High-Strength Reinforced Concrete Columns,” ACI Structural Journal, V. 112, No. 6, Nov.-Dec. 2015, pp. 839-850. doi: 10.14359/51687911
10. Ou, Y.-C.; Joju, J.; and Liu, Y.-C., “Cyclic Behavior of Reinforced Concrete Columns with Unstressed Steel Strands as Longitudinal Reinforcement,” Journal of Structural Engineering, ASCE, V. 148, No. 9, Sept. 2022, p. 04022125. doi: 10.1061/(ASCE)ST.1943-541X.0003426
11. Ou, Y.-C.; Joju, J.; and Hsu, W.-C., “Cyclic Behavior of Shear-Critical Concrete Columns with Unstressed Steel Strands as Longitudinal Reinforcement,” Engineering Structures, V. 264, Aug. 2022, Article No. 114465. doi: 10.1016/j.engstruct.2022.114465
12. Sokoli, D., and Ghannoum, W. M., “High-Strength Reinforcement in Columns under High Shear Stresses,” ACI Structural Journal, V. 113, No. 3, May-June 2016, pp. 605-614. doi: 10.14359/51688203
13. Li, Y.; Cao, S.; and Jing, D., “Concrete Columns Reinforced with High-Strength Steel Subjected to Reversed Cycle Loading,” ACI Structural Journal, V. 115, No. 4, July 2018, pp. 1037-1048. doi: 10.14359/51701296
14. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14),” American Concrete Institute, Farmington Hills, MI, 2014, 520 pp.
15. Ichinose, T., “Splitting Bond Failure of Columns under Seismic Action,” ACI Structural Journal, V. 92, No. 5, Sept.-Oct. 1995, pp. 535-541.
16. Suzuki, T.; Laughery, L.; and Pujol, S., “Learning from the Japanese Experience with High-Strength Longitudinal Reinforcement,” Concrete International, V. 40, No. 9, Sept. 2018, pp. 47-58.
17. NCREE-19-001, “Design Guideline for Building of High-Strength Reinforced Concrete Structures,” National Center for Research on Earthquake Engineering, Taipei, Taiwan, 2019.
18. ASTM A706/A706M-24, “Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement,” ASTM International, West Conshohocken, PA, 2024, 9 pp.
19. Chi, K.-N.; Chiu, C.-K.; and Lin, K.-C., “Study on Straight Development Length of Tensile Threaded Bars in High-Strength Reinforced Concrete Members,” Construction and Building Materials, V. 183, Sept. 2018, pp. 661-674. doi: 10.1016/j.conbuildmat.2018.06.180
20. ASTM A970/A970M-18, “Standard Specification for Headed Steel Bars for Concrete Reinforcement,” ASTM International, West Conshohocken, PA, 2018, 10 pp.
21. National Land Management Agency, “Building Code for Design of Reinforced Concrete Structures,” Ministry of the Interior, Taipei, Taiwan, 2023.
22. Lin, Y.-T., “Seismic Behavior of Reinforced Concrete Beams and Columns with SD690 Threaded Bars as Longitudinal Reinforcement,” master’s thesis, Department of Civil Engineering, College of Engineering, National Taiwan University, Taipei, Taiwan, 2023.
23. Elwood, K. J.; Maffei, J.; Riederer, K. A.; and Telleen, K., “Improving Column Confinement: Part 1: Assessment of Design Provisions,” Concrete International, V. 31, No. 11, Nov. 2009, pp. 32-39.
24. ACI Committee 374, “Acceptance Criteria for Moment Frames Based on Structural Testing and Commentary (ACI 374.1-05) (Reapproved 2019),” American Concrete Institute, Farmington Hills, MI, 2005, 9 pp.
25. Orangun, C. O.; Jirsa, J. O.; and Breen, J. E., “A Reevaluation of Test Data on Development Length and Splices,” ACI Journal Proceedings, V. 74, No. 3, Mar. 1977, pp. 114-122.
26. Darwin, D.; Lutz, L. A.; and Zuo, J., “Recommended Provisions and Commentary on Development and Lap Splice Lengths for Deformed Reinforcing Bars in Tension,” ACI Structural Journal, V. 102, No. 6, Nov.-Dec. 2005, pp. 892-900.
27. Joint ACI-ASCE Committee 408, “Bond and Development of Straight Reinforcing Bars in Tension (ACI 408R-03) (Reapproved 2012),” American Concrete Institute, Farmington Hills, MI, 2003, 49 pp.
28. Canbay, E., and Frosch, R. J., “Bond Strength of Lap-Spliced Bars,” ACI Structural Journal, V. 102, No. 4, July-Aug. 2005, pp. 605-614.