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Advances in Concrete Construction
  Volume 1, Number 3, October 2013 , pages 253-272
DOI: https://doi.org/10.12989/acc2013.1.3.253
 

Simulation of experiments on RC frames strengthened with dissipative steel links
Kyriaki Georgiadi-Stefanidi, Euripidis Mistakidis and Kosmas Athanasios Stylianidis

 
Abstract
    The use of steel bracing systems is a popular method for the strengthening of existing reinforced concrete (RC) frames and may lead to a substantial increase of both strength and stiffness. However, in most retrofitting cases, the main target is the increase of the energy dissipation capacity. This paper studies numerically the efficiency of a specific strengthening methodology which utilizes a steel link element having a cross-section of various shapes, connected to the RC frame through bracing elements. The energy is dissipated through the yielding of the steel link element. The case studied is a typical one bay, single-storey RC frame, constructed according to older code provisions, which is strengthened through two different types of link elements. The presented numerical models are based on tests which are simulated in order to gain a better insight of the behaviour of the strengthened structures, but also in order to study the effects of different configurations for the link element. The behaviour of the strengthened frames is studied with respect to the one of the original bare frame. Moreover, the numerically obtained results are compared to the experimentally obtained ones, in order to verify the effectiveness of the applied simulation methodology.
 
Key Words
    strengthening; non-linear analysis; concrete structures; earthquake engineering; finite elements method
 
Address
Kyriaki Georgiadi-Stefanidi and Euripidis Mistakidis: Laboratorty of Structural Analysis and Design, Department of Civil Engineering, University of Thessaly, Pedion Areos, GR-38334 Volos, Greece
Kosmas Athanasios Stylianidis: Laboratory of Reinforced Concrete and Masonry Structures, Department of Civil Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
 
References
    -acc0103005-
  1. Abdollahi, A. (1996), "Numerical strategies in the application of FEM to RC structures", Comput. Struct., 58(6), 1171-1182.
  2. Antonucci, A., Balducci, F., Bartera, F., Castellano, G. and Chaudat, T. (2006), "Shaking table tests on RC frame braced with fluid viscous dampers", Proceedings of the 1st European Conference of Earthquake Engineering and Seismology, Geneva, Switzerland, September.
  3. D' Aniello, M. (2006), "Seismic upgrading of RC structure by steel eccentric bracing (an experimental and numerical study)", Pollack Periodica, 1(2), 17-32.
  4. De Borst, R. and Nauta, P. (1985), "Non-orthogonal cracks in a smeared finite element model", Eng. Comput., 2(1), 35-46.
  5. Georgiadi-Stefanidi, K., Mistakidis, E., Perdikaris, P. and Papatheocharis, T. (2010), "Numerical simulation of tested reinforced concrete beams strengthened by thin fibre-reinforced cementitious matrix jackets", Earthq. Struct., 1(4), 354-370.
  6. Georgiadi-Stefanidi, K., Mistakidis, E., Perdikaris, P. and Papatheocharis, T. (2011), "Numerical simulation of the nonlinear bending response of fibre-reinforced cementitious matrix beams and comparison with experimental results", Eng. Struct., 33(12), 3579-3589.
  7. Karalis, A.A., Georgiadi-Stefanidi, K.A., Salonikios, T.N., Stylianidis, K.C. and Mistakidis, E.S. (2011), "Experimental and numerical study on the behaviour of high dissipation metallic devices for the strengthening of existing structures", III ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN, Corfu, Greece.
  8. Karalis, A.A., Stylianidis, K.C. and Salonikios, T.N. (2010), "Experimental investigation of old R/C frames strengthened against earthquakes by high dissipation steel link elements", Urban Habitat Constructions Under Catastrophic Events, Cost Action C26 FINAL Conference, Balkema.
  9. Karalis, A.A. and Stylianidis, K.C. (2013), "Experimental investigation of existing R/C frames strengthened by high dissipation steel link elements", Earthq. Struct., 5(2),143-160.
  10. Kontoleon, M.J., Mistakidis, E.S., Baniotopoulos, C.C. and Panagiotopoulos, P.D. (1999), "Parametric analysis of the structural response of steel base plate connections", Comput. Struct., 71(1), 78-103.
  11. Kunishue, A., Koshika, S., Kurokawa, Y., Suzuki, N., Agami, J. and Sakamoto, M. (1983), "Retrofitting method of existing reinforced concrete buildings using elasto-plastic steel dampers", Proceeding of the12th World Conference on Earthquake Engineering, New Zealand.
  12. Mistakidis, E.S., Baniotopoulos, C.C., Bisbos, C.D. and Panagiotopoulos, P.D. (1997), "Steel T-stub connections under static loading: an effective 2D numerical model", J. Constr. Steel Res., 44(1-2), 51-67.
  13. MSC Software Corporation (2010), MSC Marc, Volume A: Theory and User Information.
  14. Perera, R., Gomez, S. and Alarcon, E. (2004), "Experimental and analytical study of masonry infill reinforced concrete frames retrofitted with steel braces", J. Struct. Eng.- ASCE, 130(12), 2032-2039.
  15. Pinto, A. and Taucer, F. (2006), Assessment and retrofit of full scale models of existing RC frames, Advances in Earthquake Engineering for Urban Risk Reduction, Springer.
  16. Rabczul, T., Akkerman, J. and Eibl, J. (2005), "A numerical model for reinforced concrete structures", Int. J. Solids Struct., 42(5-6), 1327-1354.
  17. Sickert, J.U., Kaliske, M., Graf, W. and Mandara, A. (2010), "Robust design of seismic upgrading of RC structure with innovative bracing systems", Urban Habitat Constructions Under Catastrophic Events,COST Action C26 FINAL CONFERENCE, Balkema.
  18. Wang, C.Y., Ho, H.Y., Wang, R.Z. and Huang, H.H. (2008), "Numerical simulations of non-ductile RC frames with infilled brick panel under cyclic loading", J. Chin. Inst. Eng., 31(5), 827-840.
 
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