Title:
Seismic Performance of Reinforced Concrete Column- Foundation Connections Using Combo-Type Mechanical Splices
Author(s):
Deuckhang Lee, Thomas H.-K. Kang, Hyunjin Ju, Sung-Woo Moon, and Il-Seung Yang
Publication:
Structural Journal
Volume:
116
Issue:
5
Appears on pages(s):
173-186
Keywords:
column-foundation connections; reinforced concrete; seismic; splices
DOI:
10.14359/51716766
Date:
9/1/2019
Abstract:
Commercially available reinforcing bars are generally produced in standard lengths to ensure smooth shipment and quality control in steel manufacturing plants. As a result, splicing of reinforcing steel bars is inevitable in construction of reinforced concrete structures. To improve constructability and lessen disadvantages in traditional splicing methods, this study proposes a combo-type mechanical splicing method using the screw-ribbed (that is, thread-deformed) reinforcing bars. The combo-type mechanical splices were evaluated for seismic performance of reinforced concrete (RC) column-foundation connections under cyclic loading tests. In the test program, presence of grout in the mechanical sleeves, location of splices, and compressive strengths of concrete were considered as the key variables. Test results demonstrated that RC column-foundation connections with mechanical splices can provide comparable seismic performance with that of continuous reinforcement. In addition, results confirmed current building code allowance for non-grouted mechanical splices in RC intermediate moment frames.
Related References:
1. Wight, J. K., and MacGregor, J. G., Reinforced Concrete: Mechanics and Design, sixth edition, Prentice Hall, Upper Saddle River, NJ, 2011, 1176 pp.
2. Oh, J. Y.; Lee, D. H.; Lee, J. M.; Kim, K. S.; and Kim, S. B., “Experimental Study on Reinforced Concrete Column Incased in Prefabricated Permanent Thin-Walled Steel Form,” Advances in Materials Science and Engineering, V. 2016, 2016, pp. 1-11. doi: 10.1155/2016/3806549
3. Haber, Z. B.; Saiidi, M. S.; and Sanders, D. H., “Seismic Performance of Precast Columns with Mechanically Spliced Column-Footing Connections,” ACI Structural Journal, V. 111, No. 3, May-June 2014, pp. 639-650. doi: 10.14359/51686624
4. Phuong, N. D., and Mutsuyoshi, H., “Experimental Study on Performance of Mechanical Splices in Reinforced Concrete Beams,” ACI Structural Journal, V. 112, No. 6, Nov.-Dec. 2015, pp. 749-760. doi: 10.14359/51688054
5. Melek, M., and Wallace, J. W., “Cyclic Behavior of Columns with Short Lap Splices,” ACI Structural Journal, V. 101, No. 6, Nov.-Dec. 2004, pp. 802-811.
6. Kim, C. G.; Park, H. G.; and Eom, T. S., “Seismic Performance of Reinforced Concrete Columns with Lap Splices in Plastic Hinge Region,” ACI Structural Journal, V. 115, No. 1, Jan. 2018, pp. 235-245. doi: 10.14359/51701109
7. Cho, J. Y., and Pincheira, J. A., “Inelastic Analysis of Reinforced Concrete Columns with Short Lap Splices Subjected to Reversed Cyclic Loads,” ACI Structural Journal, V. 103, No. 2, Mar.-Apr. 2006, pp. 280-290.
8. Aboutaha, R. S.; Engelhardt, M. D.; Jirsa, J. O.; and Kreger, M. E., “Experimental Investigation of Seismic Repair of Lap Splice Failures in Damaged Concrete Columns,” ACI Structural Journal, V. 96, No. 2, Mar.-Apr. 1999, pp. 297-306.
9. Pantelides, C. P.; Hansen, J.; Ameli, M. J.; and Reaveley, L. D., “Seismic Performance of Reinforced Concrete Building Exterior Joints with Substandard Details,” Journal of Structural Integrity and Maintenance, V. 2, No. 1, 2017, pp. 1-11. doi: 10.1080/24705314.2017.1280589
10. CRSI, “Mechanical Splices,” Concrete Reinforcing Steel Institute, http://crsi.org/index.cfm/steel/mechanical. (last accessed July 26, 2019)
11. Kim, H. K., “Bond Strength of Mortar-Filled Steel Pipe Splices Reflecting Confining Effect,” Journal of Asian Architecture and Building Engineering, V. 11, No. 1, 2012, pp. 125-132. doi: 10.3130/jaabe.11.125
12. Ling, J. H.; Rahman, A. B. A.; Ibrahim, I. S.; and Hamid, Z. A., “Behaviour of Grouted Pipe Splice under Incremental Tensile Load,” Construction and Building Materials, V. 33, No. 1, 2012, pp. 90-98. doi: 10.1016/j.conbuildmat.2012.02.001
13. Ling, J. H.; Rahman, A. B. A.; and Ibrahim, I. S., “Feasibility Study of Grouted Splice Connector under Tensile Load,” Construction and Building Materials, V. 50, No. 1, 2014, pp. 530-539. doi: 10.1016/j.conbuildmat.2013.10.010
14. Rahman, A. B. A.; Yoon, L. H.; Ibrahim, I. S.; Mohamed, R. N.; Mohammad, S.; and Saim, A. A., “Performance of Grouted Splice Sleeves with Tapered Bars under Axial Tension,” Applied Mechanics and Materials, V. 789-790, 2015, pp. 1176-1180. doi: 10.4028/www.scientific.net/AMM.789-790.1176
15. Ng, P. L.; Guan, G. X.; and Kwan, A. K. H., “Role of Reinforcement Couplers in Serviceability Performance of Concrete Members,” IOP Conference Series: Materials Science and Engineering, V. 251, 2017, pp. 1-9.
16. Haber, Z. B.; Saiidi, M. S.; and Sanders, D. H., “Behavior and Simplified Modeling of Mechanical Reinforcing Bar Splices,” ACI Structural Journal, V. 112, No. 2, Mar.-Apr. 2015, pp. 179-188. doi: 10.14359/51687455
17. Ameli, M. J.; Parks, J. E.; Brown, D. N.; and Pantelides, C. P., “Seismic Evaluation of Grouted Splice Sleeve Connections for Reinforced Precast Concrete Column-to-Cap Beam Joints in Accelerated Bridge Construction,” PCI Journal, V. 60, No. 2, 2015, pp. 80-103. doi: 10.15554/pcij.03012015.80.103
18. Tazarv, M., and Saiidi, M. S., “Seismic Design of Bridge Columns Incorporating Mechanical Bar Splices in Plastic Hinge Regions,” Engineering Structures, V. 124, 2016, pp. 507-520. doi: 10.1016/j.engstruct.2016.06.041
19. ACI Committee 439, “Types of Mechanical Splices for Reinforcing Bars (ACI 439.3R-07),” American Concrete Institute, Farmington Hills, MI, 2007, 16 pp.
20. Cagley, J. R., and Apple, R., “Comparing Costs—Butt Splices versus Lap Splices,” Concrete International, V. 20, No. 7, July 1998, pp. 55-56.
21. Harajli, M. H., “Development/Splice Strength of Reinforcing Bars Embedded in Plain and Fiber Reinforced Concrete,” ACI Structural Journal, V. 91, No. 5, Sept.-Oct. 1994, pp. 511-520.
22. Hulshizer, A. J.; Ucciferro, J. J.; and Gray, G. E., “Mechanical Reinforcement Couplings Meet Demand of Strength and Constructability,” Concrete International, V. 16, No. 12, Dec. 1994, pp. 47-52.
23. Tokyo Tekko Co. Ltd., “FREE-JOINT,” http://www.tokyotekko.co.jp/en/prd/tekko/nsts/nsts08.html. (last accessed July 26, 2019)
24. Kunnath, S. K., “Modeling of Reinforced Concrete Structures for Nonlinear Seismic Simulation,” Journal of Structural Integrity and Maintenance, V. 3, No. 3, 2018, pp. 137-149. doi: 10.1080/24705314.2018.1492669
25. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14),” American Concrete Institute, Farmington Hills, MI, 2014, 519 pp.
26. ASTM A615/A615M-16, “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement,” ASTM International, West Conshohocken, PA 2016, 6 pp.
27. Korea Standards Association, “KS D 0249:2003—Method of Inspection for Mechanical Splicing Joint of Bars for Concrete Reinforcement,” Korea Standards Association, Seoul, Korea, 2003, 8 pp.
28. Korea Concrete Institute, “Code Requirements for Structural Concrete (KCI-2012),” Korea Concrete Institute, Seoul, Korea, 2012, 342 pp.
29. Phuong, N. D., and Mutsuyoshi, H., “Influence of Quality of Mechanical Splices on Behavior of Reinforced Concrete Members,” Research Report of Civil and Environmental Engineering, V. 41, Saitama University, Saitama, Japan, 2015, pp. 32-43.
30. ACI Committee 374, “Acceptance Criteria for Moment Frames Based on Structural Testing (ACI 374.1-05) and Commentary,” American Concrete Institute, Farmington Hills, MI, 2006, 10 pp.
31. Hwang, D.; Kim, H.; Choi, H.; Park, G.; and Lee, J., “Assessing the Seismic Performance of Threaded Rebar Coupler System,” International Journal of Civil and Environmental Engineering, V. 9, No. 10, 2015, pp. 1274-1279.
32. Ruangrassamee, A., and Mounnarath, P., “Monotonic and Cyclic Behaviors of Energy-Dissipating Threaded Mechanical Splices,” The 14th World Conference on Earthquake Engineering (WCEE), Beijing, China, 2008, pp. 1-8.
33. Bentz, E. C., and Collins, M. P., Response 2000 Ver. 1.1 User Manual, http://www.ecf.utoronto.ca/~bentz/r2k.htm, 2001. (last accessed July 26, 2019)
34. Lee, H.-J.; Chen, H.-C.; and Tasi, T.-C., “Simplified Design Equation of Minimum Interior Joint Depth for Special Moment Frames with High-Strength Reinforcement,” International Journal of Concrete Structures and Materials, V. 12, No. 7, pp. 1077-1093.