COMPARISION OF INTERNATIONAL CODES FOR STEEL ANCHORS DETAILS USING IN SEISMIC STRENTHENING

Mohamud Abdirahman IBRAHIM; Musa Hakan ARSLAN

COMPARISION OF INTERNATIONAL CODES FOR STEEL ANCHORS DETAILS USING IN SEISMIC STRENTHENING

Mohamud Abdirahman IBRAHIM, Musa Hakan ARSLAN

Öz

Having poor seismic performance reinforced concrete frame must be strengthened to reach sufficient seismic performance. The main factor that affects the seismic performance, designing and application of the anchor dowels in the connection zone of infill shear wall and weak reinforced frame. Connection between the frame and the infill wall are usually achieved by using dowels that are placed in the holes drilled into inner faces of the frame members, and fixed by a resin. In this study, the design and detailing guidelines for the design of the post-installed anchors in TEC (2007), ACI 318, JCI (2001) and IS15988 have been compared. According to the results, in ACI 318-14, the shear capacity of anchors is effected by embedment depth, anchor bar diameter, concrete strength, strength of the bar and edge distance. In TEC-2007, shear strength is affected only by two properties of the anchor bar: strength and diameter. JCI-2001 design code considers the two factors outlined in TEC-2007 and concrete strength. Based on the comparison conducted in this study, there are insufficient guidelines in TEC-2007 for the design and detailing of anchor bars that are typically used as connection between an existing frame and new RC infill wall.

Anahtar Kelimeler

Infill walls, Post-installed anchors, Strengthening, Shear capacity, Detailing.

Tam Metin:

PDF (English)

Referanslar

ACI Committee, 2014, Building Code Requirements for Structural Concrete and Commentary (ACI 318-14), American Concrete Institute.

Altin S, Ersoy U, Tankut T (1992) Hysteretic response of reinforced-concrete infilled frames. ASCE J Struct Eng., 118(8), 2133–2150.

Altin S., Anil O., Kara E., 2008, An experimental study on reinforced concrete partially infilled frames, Engineering Structures, 29, 449–460.

Anil, O. and Altin, S., 2007, An experimental study on reinforced concrete partially infilled frames, Engineering Structures, 29 449-460.

Aoyama, H., Katoh, D., Katumata, H., and Hosokawa, Y., 1984, Strength and Behavior of Postcast Shear Walls for Strengthening of Existing Reinforced Concrete Buildings, Proceedings of 8th WCEE, 1, 485-492.

Bass R., Carrasquillo R., and Jirsa J., 1989, “Shear Transfer across New and Existing Concrete Interfaces,” ACI Structural Journal, July 1989.

Çalışkan, Ö. Yilmaz, S., and Kaplan, H., 2011, Güçlendirme Ankrajlarının Kesme Dayanımının ACI318 ve TS500’e Göre Belirlenmesi, Journal of Engineering Sciences, 14(3), 19-27.

Canbay E., Ersoy U. and Ozcebe G., 2003, Contribution of reinforced concrete infills to seismic behavior of structural systems, ACI Structural Journal, 2003, 100(5), 637-643.

Canbay E (2001) Contribution of RC infills to the seismic behavior of structural systems, PhD Dissertation, Middle East Technical University, Ankara.

Canbay E., Ersoy U., özcebe G., 2002, Betonarme dolgu duvarların yapıların sismik davranışı üzerine etkileri. Research Report No: INTAG 563, Scientific and Technical Research Council of Turkey-TUBITAK, Ankara.

CEN, EN 1998-3:2005 Eurocode 8: Design of structures for earthquake resistance - Part 3: Assessment and retrofitting of buildings. European Committee of Standardization. Brussels.

Erdem, I., Akyuz, U., Ersoy, U. and Ozcebe, G., 2006, Experimental And Analytical Studies On The Strengthening Of Rc Frames, 13th World Conference on Earthquake Engineering, Vancouver.

Ersoy, U., 1992, Repair and Strengthening of RC Structures, International Symposium on Earthquake Disaster Prevention, CENAPRED, Mexico City, 123-138.

Fardis M., Schetakis, A., and Strepelias, E., 2013, RC buildings retrofitted by converting frame bays into RC walls, Bull Earthquake Eng.,11, 1541–1561.

fib (2012) Model Code 2010 - Final draft. Vol. 1: Bulletin 65, Vol. 2: Bulletin 66, Fédération Internationale du Béton ( fib), Lausanne.

Hayashi, T., Niwa, H. and Fukuhara, M., 1980, The Strengthening Methods of the Existing Reinforced Concrete Buildings, 7th World Conference on Earthquake Engineering, Istanbul, 7, 89-96.

Higashi, Y., Endo, T., Ohkubo, M. and Shimizu, Y., 1980, Experimental study on strengthening reinforced concrete structure by adding shear wall, Proc. 7th World Conference on Earthquake Engineering, Istanbul, 173-180.

IS 15988, 2013, Seismic Evaluation and Strengthening of Existing Reinforced Concrete Buildings – Guidelines, New Delhi.

Jirsa, J.O., 1988, Behaviour of Epoxy-Grouted Dowels and Bolts Used for Repair of Strengthening of RC Structures, Proceedings of 9th World Conference on Earthquake Engineering, Tokyo-Kyoto, 371-376.

JCI, 2001, Standard for Seismic Evaluation of Existing Reinforced Concrete Buildings, Japan Building Disaster Prevention Association.

Sonuvar, M., Ozcebe, G. and Ersoy, U., 2004, Rehabilitation of Reinforced Concrete Frames with Reinforced Concrete Infills, ACI Structural J. 101 (4) 494-500.

Phan, T., Cheok, S., and Todd, R., 1996, Strengthening Methodology for Lightly Reinforced Concrete Frames: Recommended Design Guidelines for Strengthening with Infill Walls. Gaithersburg: National Institute of Standards and Technology.

Pincheira, J. and Jirsa, J., 1995, Seismic Response of RC Frames Retrofitted with Steel Braces or Walls, Journal of Structural Engineering, 121(8), 1225–1235.

Ramirez-de-Alba, E. Martinez-Rueda, J. De la Colina M., 1992, Behaviour of RC frame models strengthened with walls, Earthquake engineering: Tenth world conference, Rotterdam, 5257-5260.

Strepelias, E., Palios, X., Bousias, N. and Fardis, N., 2012, Pseudodynamic tests on 4-storey nonductile frames with RC infilling of the bay, SERIES Workshop: Role of Research Infrastructures in Seismic Rehabilitation, Istanbul.

Sugano, S., 1981, Seismic Strengthening of Existing Reinforced Concrete Buildings in Japan, Bulletin of the New Zealand National Society for Earthquake Engineering, 14(4), 371-378.

Teymur P., Yuksel, E., and Pala S., 2008, Wet-mixed shotcrete walls to retrofit low ductile RC frames. 14th World Conference on Earthquake Engineering, Beijing-China.

TEC-2007, Ministry of Public Works and Settlement, Turkish Earthquake Code-2007: Specifications for buildings to be built in seismic areas. Ankara, Turkey (in Turkish), 2007.

TS500 Betonarme Yapıların Hesap ve Yapım Kuralları, 2000, Türk Standartları Enstitüsü, Ankara.

Turk, M., Ersoy, U., Ozcebe, G., 2003, Seismic Rehabilitation of RC Frames with RC Infill Walls, Fifth National Conference on Earthquake Engineering, Istanbul-Turkey, 1-9.

Yilmaz C., Aktas M., Kuyuk S., Yaman D., 2014, Behavior of RC Frames Strengthened with Infill Panel under Dynamic Loading, Second European Conference on Earthquake Engineering and Seismology, Istanbul-Turkey, 861–866.

DOI: https://doi.org/10.15317/Scitech.2016320517