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Seismic behavior of concentrically steel braced frames and their use in strengthening of reinforced concrete frames by external application
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 Title & Authors
Seismic behavior of concentrically steel braced frames and their use in strengthening of reinforced concrete frames by external application
Unal, Alptug; Kaltakci, Mevlut Yasar;
 Abstract
There are many studies in the literature conducted on the subject of ensuring earthquake safety of reinforced concrete and steel structures using steel braced frames, but no detailed study concerning individual behavior of steel braced frames under earthquake loads and strengthening of reinforced concrete structures with out-of-plane steel braced frames has been encountered. In this study, in order to evaluate behaviors of "Concentrically Steel Braced Frames" types defined in TEC-2007 under lateral loads, dimensional analysis of Concentrically Steel Braced Frames designed with different scales and dimensions was conducted, the results were controlled according to TEC-2007, and after conducting static pushover analysis, behavior and load capacity of the Concentrically Steel Braced Frames and hinges sequence of the elements constituting the Concentrically Steel Braced Frames were tested. Concentrically Steel Braced Frames that were tested analytically consist of 2 storey and one bay, and are formed as two groups with the scales 1/2 and 1/3. In the study, Concentrically Steel Braced Frames described in TEC-2007 were designed, which are 7 types in total being non-braced, X-braced, V- braced, - braced, - braced, /- braced and K- braced. Furthermore, in order to verify accuracy of the analytic studies performed, the 1/2 scaled concentrically steel X-braced frame test element made up of box profiles and 1/3 scaled reinforced concrete frame with insufficient earthquake resistance were tested individually under lateral loads, and test results were compared with the results derived from analytic studies and interpreted. Similar results were obtained from both experimental studies and pushover analyses. According to pushover analysis results, load-carrying capacity of 1/3 scaled reinforced concrete frames increased up to 7,01 times as compared to the non-braced specimen upon strengthening. Results acquired from the study revealed that reinforced concrete buildings which have inadequate seismic capacity can be strengthened quickly, easily and economically by this method without evacuating them.
 Keywords
concentrically steel braced frames;reinforced concrete frames;design and construction mistakes;pushover analysis;strengthening;
 Language
English
 Cited by
 References
1.
Annan, C.D., Youssef, M.A. and El Naggar, M.H. (2009), "Experimental evaluation of the seismic performance of modular steel-braced frames", Eng. Struct., 31(7), 1435-1446. crossref(new window)

2.
Bahadir, F. (2012), "Window opening effects in strengthening of RC frames with inadequate earthquake performance by using external RC shear wall", Ph.D. Dissertation; Selcuk University, Konya, Turkey.

3.
Balik, F. (2012), "Window opening effects in strengthening of RC frames with inadequate earthquake performance by using RC shear wall", Ph.D. Dissertation; Selcuk University, Konya, Turkey.

4.
Brandonisio, G., Toreno, M., Grande, E., Mele, E. and De Luca, A. (2012), "Seismic design of concentric braced frames", J. Construct. Steel Res., 78, 22-37. crossref(new window)

5.
Dogan, A. (2007), "Research about concentrically steel braced frames according to design specifications for buildings in seismic regions 2007", Master Dissertation; Istanbul Technical University, Istanbul, Turkey.

6.
FEMA 273/356 (1996), Federal Emergency Management Agency, Guidelines for the Seismic Rehabilitation of Buildings, Redwood City, CA, USA.

7.
Gorgulu, T., Tama, Y.S., Yilmaz, S., Kaplan, H. and Ay, Z. (2012), "Strengthening of reinforced concrete structures with external steel shear walls", J. Construct. Steel Res., 70, 226-235. crossref(new window)

8.
Grande, E. and Rasulo, A. (2013), "Seismic assessment of concentric X-braced steel frame", Eng. Struct., 49, 983-995. crossref(new window)

9.
Hajirasouliha, I. and Doostan, A. (2010), "A simplified model for seismic response prediction of concentrically braced frames", Adv. Eng. Software, 41(3), 497-505. crossref(new window)

10.
Inel, M. and Ozmen, H.B. (2008), "Seismic performance evaluation of school buildings in Turkey", Struct. Eng. Mech., Int. J., 30(5), 535-558. crossref(new window)

11.
Jazany, R.A., Hajirasouliha, I. and Farshchi, H. (2013), "Influence of masonry infill on the seismic performance of concentrically braced frames", J. Construct. Steel Res., 88, 150-163. crossref(new window)

12.
Kaltakci, M.Y., Ozturk, M. and Arslan, M.H. (2010), "An experimental investigation for external RC shear wall applications", Nat. Hazard. Earth Syst. Sci., 10, 1941-1950. crossref(new window)

13.
Kaplan, H., Yilmaz, S., Cetinkaya, N. and Atimtay, E. (2011), "Seismic strengthening of RC structures with exterior shear walls", Indian Acad. Sci., 36, Part 1, 17-34.

14.
Khampanit, A., Leelataviwat, S., Kochanin, J. and Warnitchai, P. (2014), "Energy-based seismic strengthening design of non-ductile reinforced concrete frames using buckling-restrained braces", Eng. Struct., 81, 110-122. crossref(new window)

15.
Korkmaz, K.A. (2007), "Earthquake behavior evaluation of r/c structures strengthened with steel bracings", Dogus U niversitesi Dergisi, 8(2), 191-201.

16.
Lumpkin, E.J., Hsiao, P., Roeder, C.W., Lehman, D.E., Tsai, C., Wu, A., Wei, C. and Tsai, K. (2012), "Investigation of the seismic response of three-story special concentrically braced frames", J. Construct. Steel Res., 6477, 131-144.

17.
Maheri, M.R., Kousari, R. and Razazan, M. (2003), "Pushover tests on steel X-braced and knee-braced RC frames", Eng. Struct., 25(13), 1697-1705. crossref(new window)

18.
Metelli, G. (2013), "Theoretical and experimental study on the cyclic behaviour of X braced steel frames", Eng. Struct., 46, 763-773. crossref(new window)

19.
Ozel, A.E. and Guneyisi, E.M. (2011), "Effects of eccentric steel bracing systems on seismic fragility curves of mid-rise R/C buildings: A case study", Struct. Safety, 33(1), 82-95. crossref(new window)

20.
Qu, Z., Kishiki, S., Maida, Y., Sakata, H. and Wada, A. (2015), "Seismic responses of reinforced concrete frames with buckling restrained braces in zigzag configuration", Eng. Struct., 105, 12-21. crossref(new window)

21.
Roeder, C.W., Lumpkin, E.J. and Lehman, D.E. (2011), "A balanced design procedure for special concentrically braced frame connections", J. Construct. Steel Res., 67(11), 1760-1772. crossref(new window)

22.
SAP2000 (2000a), Version 15, CSI Company, Berkeley, California, USA.

23.
SAP2000 (2000b), User Manual: CSI Company, Berkeley, California, USA.

24.
Tama, Y.S., Yilmaz, S., Kaplan, H. and Gorgulu, A.T. (2005), "Mevcut betonarme yapilarin dis celik perde ile guclendirilmesi: Uygulama calismasi, Translation: A case study on strenghtening of existing reinforced concrete structures by external steel shear walls", Proceedings of the 4th International Advanced Technologies Symposium-Konya, Konya, Turkey, September, pp. 1194-1197. [In Turkish]

25.
TEC-2007 (2007), Turkish Code for the Seismic Design of Structures, Turkey.

26.
TS EN ISO 6892-1st (2010), Metallic materials - Tensile testing - Part 1: Method of test at room temperature; Turkish Standards Instution, Ankara, Turkey.

27.
Unal, A., Balik, F.S., Bahadir, F., Korkmaz, H.H., Kaltakci, M.Y. and Kamanli, M. (2014), "Experimental study of strengthening of RC frames with column retrofitting", J. Selcuk Univ. Nat. Appl. Sci., 3(3), 39-54.

28.
Unal, A. (2012), "Strengthening of reinforced concrete frames not designed according to TEC 2007 with out of plane external shear wall", Master Dissertation; Selcuk University, Konya, Turkey.

29.
Unal, A. (2013), "Usage of concentrically steel braced frames for strengthening of reinforced concrete frames", Seminar; Selcuk University, Konya, Turkey.

30.
Wang, W., Zhou, Q., Chen, Y., Tong, L. and Chan, T. (2013), "Experimental and numerical investigation on full-scale tension-only concentrically braced steel beam-through frames", J. Construct. Steel Res., 80, 369-385. crossref(new window)

31.
Yoo, J., Lehman, D.E. and Roeder, C.W. (2008), "Influence of connection design parameters on the seismic performance of braced frames", J. Construct. Steel Res., 64(6), 607-623. crossref(new window)