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http://dx.doi.org/10.12989/sem.2002.14.5.543

Seismic repair of reinforced concrete beam-column subassemblages of modern structures by epoxy injection technique  

Tsonos, Alexander G. (Aristotle University of Thessaloniki, School of Engineering, Department of Civil Engineering, Division of Structural Engineering)
Publication Information
Structural Engineering and Mechanics / v.14, no.5, 2002 , pp. 543-563 More about this Journal
Abstract
The use of the epoxy pressure injection technique to rehabilitate reinforced concrete beam-column joints damaged by strong earthquakes is investigated experimentally and analytically. Two one-half-scale exterior beam-column joint specimens were exposed to reverse cyclic loading similar to that generated from strong earthquake ground motion, resulting in damage. Both specimens were typical of new structures and incorporated full seismic details in current building codes. Thus the first specimen was designed according to Eurocode 2 and Eurocode 8 and the second specimen was designed according to ACI-318 (1995) and ACI-ASCE Committee 352 (1985). The specimens were then repaired with an epoxy pressure injection technique. The repaired specimens were subjected to the same displacement history as that imposed on the original specimens. The results indicate that the epoxy pressure injection technique was effective in restoring the strength, stiffness and energy dissipation capacity of specimens representing a modem design.
Keywords
beams (supports); columns (supports); earthquakes; epoxy resins; joints (junctions); reinforced concrete; repairs;
Citations & Related Records

Times Cited By Web Of Science : 4  (Related Records In Web of Science)
Times Cited By SCOPUS : 5
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1 Abdel-Fattah, A.B. and Wight, J.K. (1987), "Study of moving beam plastic hinging zones for earthquake - resistant design of R/C buildings", ACI Struct. J., 84(1), 31-39.
2 Dritsos. S. (2001), "Repair and strengthening of reinforced concrete structures", Patras, 309pp. (in Greek).
3 Durrani, A.J. and Wight, J.K. (1987), "Earthquake resistance of reinforced concrete interior connections including a floor slab", ACI Struct. J., 84(5), 400-406.
4 Ehsani, M.R. and Wight, J.K. (1985), "Effect of transverse beams and slab on behavior of reinforced concrete beam-to-column connections", ACI Struct. J., 82(2), 188-195.
5 Eurocode No 2 (1993), "Concrete design of structures", Commission of the European Communities.
6 Hanson, N.W. and Conner, H.W. (1967), "Seismic resistance of reinforced concrete beam-column joints", Proceedings, ASCE, 93(ST5), 533-560.
7 Higazy, E.M., Elnashai, A.S. and Agbabian, M. (1996), "Behavior of beam-column connections under axial column tension", J. Struct. Eng., 122(5), 501-511.   DOI
8 Higazy, E.M. and Elnashai, A.S. (1997), "Energy - based technique for seismic performance assessment of interior beam-column joints", J. Earthq. Eng., 1(4), 675-692.   DOI   ScienceOn
9 Penelis, G.G. and Kappos, J.A. (1997), "Earthquake - resistant concrete structures", E & FN SPON, An Imprint of Chapman & Hall, 572pp.
10 Tsonos, A.G. (1999), "Lateral load response of strengthened reinforced concrete beam-to-column joints", ACI Struct. J., 96(1), 46-56.
11 Paulay, T. and Park, R. (1984), "Joints in reinforced concrete frames designed for earthquake resistance", Research Report 84-9, Department of Civil Engineering, University of Canterbury, Christchurch, New Zealand, 72pp.
12 ACI-ASCE Committee 352 (1985), "Recommendations for design of beam-column joints in monolithic reinforced concrete structures (ACI 352R-85)", American Concrete Institute, Farmington Hills, Mich., 19pp.
13 NEHRP (1985), "Recommended provisions for the development of seismic regulations for new buildings - Part 3, Appendix: Existing Buildings", FEMA 97, Buildings Seismic Safety Council, Washington, D.C., 142pp.
14 French, C.W., Thorp, G.A. and Tsai, W. (1990), "Epoxy repair techniques for moderate earthquake damage", ACI Struct. J., 87(4), 416-424.
15 Meinheit, D.F. and Jirsa, J.O. (1981), "Shear strength of R/C beam-column connections", Proceedings ASCE, 107(ST11), 2227-2244.
16 Cheung, P.C., Paulay, T. and Park, R. (1991), "New Zealand tests on full-scale reinforced concrete beam-columnslab subassemblages designed for earthquake resistance", American Concrete Institute, SP 123-1, 1-38.
17 Agbabian, M.S., Higazy, E.M., Abdel-Ghaffar, A.M. and Elnashai, A.S. (1994), "Experimental observations on the seismic shear performance of RC beam-to-column connections subjected to varying axial column force", J. Earthq. Eng. Struct. Dyn., 23, 859-876.   DOI   ScienceOn
18 Bertero, V.V. (1979), "Seismic behavior of structural concrete linear elements (beams, columns) and their connections", Bulletin d' Information, CEB 131, Paris, 125-199.
19 Popov, E.P. and Bertero, V.V. (1975), "Repaired R/C members under cyclic loading", Earthq. Eng. Struct. Dyn., (Chichester), 4, 129-144.   DOI   ScienceOn
20 Rodriguez, M. and Park, R. (1991), "Repair and strengthening of reinforced concrete buildings for seismic resistance", J. Earthquake Spectra, 7(3), 439-459.   DOI
21 Tasai, A. (1992), "Effective repair with resin for bond failure of RC members", 10th World Conference on Earthquake Engineering, Madrid, Spain, 5211-5216.
22 Scott, B.D., Park, R. and Priestley, M.J.N. (1982), "Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates", ACI J., Proceedings, 79(1), 13-27.
23 Kupfer, H., Hilsdorf, H.K. and Rusch, H. (1969), "Behavior of concrete under biaxial stresses", ACI J., Proceedings, 66(8), 656-667.
24 NZS 3101:1982, "Code of practice for the design of concrete structures", Standards Association of New Zealand, Wellington, Part 1, 127pp., Part 2, 156pp.
25 Karayannis, C., Chalioris, C. and Sideris, K. (1998), "Effectiveness of RC beam-column connection repair using epoxy resin injections", J. Earthq. Eng., 2(2), 217-240.   DOI   ScienceOn
26 Lee, D.L.N., Wight, J.K. and Hanson, R.D. (1980), "Repair of damaged reinforced concrete frame structures", Seventh World Conference on Earthquake Engineering, Istanbul, Turkey, 7, 2486-2491.
27 Joh, O., Goto, Y. and Shibata, T. (1991), "Influence of transverse joint and beam reinforcement and relocation of plastic hinge region on beam-column joint stiffness deterioration", American Concrete Institute, SP 123-8, 187-223.
28 Eurocode No 8 (1994), "Earthquake resistant design of structures", Commission of European Communities.
29 Tsonos, A.G. (1997), "Shear strength of ductile reinforced concrete beam-to-column connections, for seismic resistant structures", J. European Earthquake Engineering, 2, 54-64.
30 Park, R. and Paulay, T. (1975), Reinforced Concrete Structures, John Wiley Publications, New York, 769pp.
31 Bertero, V.V. and Popov, E.P. (1977), "Seismic behaviour of ductile moment - resisting reinforced concrete frames", American Concrete Institute, SP53-11, 247-291.
32 CEB (1985), "Model code of seismic design of concrete structures", Bulletin d' Information, CEB 165, Paris.
33 Jirsa, J.O., Editor (1991), "Design of beam-column joints for seismic resistance", American Concrete Institute, SP 123, 518pp.
34 ACI Committee 318 (1995), "Building code requirements for structural concrete (ACI 318-95) and commentary (318R-95)", American Concrete Institute, Farmington Hills, Mich., 369pp.
35 Tsonos, A. (1996), "Towards a new approach in the design of R/C beam-column joints", Technika Chronika, Scientific Journal of the Technical Chamber of Greece, 16(1-2), 69-82 (in Greek).
36 Tegos, I.A. (1984), "Contribution to the study and improvement of earthquake-resistant mechanical properties of low slenderness structural elements", PhD thesis, Aristotle University of Thessaloniki, Appendix 13, 8, 185 pp. (in Greek).
37 UNDP/UNIDO PROJECT RER/79/015, UNIDO (1983), "Repair and strengthening of reinforced concrete, stone and brick masonry buildings", Building Construction Under Seismic Conditions in the Balkan Regions, 5, Vienna, 231pp.
38 Kitayama, K., Otani, S. and Aoyama, H. (1991), "Development of design criteria for RC interior beam-column joints", American Concrete Institute, SP 123-4, 97-123.