ORIGINAL ARTICLE
Application of Buckling Restrained Braces to Upgrade Vertical Stiffness of Existing RC Frames
 
More details
Hide details
1
School of Civil engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
 
2
Faculty of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran
 
 
Online publication date: 2020-11-09
 
 
Publication date: 2020-09-01
 
 
Civil and Environmental Engineering Reports 2020;30(3):68–93
 
KEYWORDS
ABSTRACT
In this paper, based on the RC frame structure of an industrial building, the finite element model of the structure is developed, according to the Chinese code for seismic design of buildings [9]. Considering the lack of seismic performance, the buckling restrained brace (BRB) is adopted for seismic retrofitting, and various configurations of buckling restrained support are considered for reinforcement. The elastic response spectrum analysis (RSA) and direct integration nonlinear time history analyses (NL-TH) are carried out for the frame structure before and after reinforcement using ETABS finite element software. From the joints displacement, inter-story displacement, inter-story shear force, acceleration, energy dissipation, and other aspects of the seismic response of the strengthened structure and the non-strengthened structure, the comparison has been made. The effect of buckling restrained support and common support on the existing building structure is verified through analytical modeling. After reinforcement, there is a 40%, 39.3%, 40%, 36.4%, and 38.3% reduction in the first period of vibration after the building is strengthened by inverted BRB, V BRB, two-story BRB, single BRB, and ordinary steel braces, respectively. Strengthening of the structure by buckling restrained braces and ordinary steel braces both decrease the original building displacement by more than 50% from the first to the fourth floor. Under severe earthquakes, the use of BRB reduced the column shear by 46.6%; similarly, the incorporation of ordinary steel braces reduced the column shear by 4.72%. It is concluded that using buckling restrained braces will increase the vertical stiffness of the structure to a very high extent.
 
REFERENCES (27)
1.
Achudhan, Deepavarsa, Vandhana, Shalini; Strengthening and Retrofitting of RC Beams Using Fiber Reinforced Polymers;’ Materials Today: Proceedings, 16, 361-366’. https://doi.org/10.1016/j.matp....
 
2.
Allawi, AAM 2017. Behavior of Strengthened Composite Prestressed Concrete Girders under Static and Repeated Loading. Advances in Civil Engineering, 2017, 1-13. https://doi.org/10.1155/2017/3....
 
3.
Bai, Y Xu ZD 2019. Multi-Degree of Freedom System. In: Bai, Y Xu ZD Structural Dynamics. Wiley. 127–205. http://doi.org/10.1002/9781119....
 
4.
Belal, MF, Mohamed, HM and Morad, SA 2015. Behavior of reinforced concrete columns strengthened by steel jacket. HBRC Journal, 11(2), 201-212. https://doi.org/10.1016/j.hbrc....
 
5.
CMC. 2010b. Technical Specification for Concrete Structures of Tall Building (JGJ3-2010). China Ministry of Construction, China Architecture and Building Press: Beijing, China. (in Chinese).
 
6.
Computers and Structures Inc. (CSI), Structural and Earthquake Engineering Software, ETABS, Extended Three-Dimensional Analysis of Building Systems Nonlinear Version 15.2.2, 2015 (Berkeley, CA, USA).
 
7.
Darain, K et al. 2016. Strengthening of RC Beams Using Externally Bonded Reinforcement Combined with Near-Surface Mounted Technique. Polymers, 8(7), 1-23. doi:10.3390/polym8070261.
 
8.
Dowrick, D 2009. Design and Detailing of New Structures for Earthquake Ground Shaking. (2009). In: Dowrick D. (ed.) Earthquake Resistant Design and Risk Reduction, Wiley, 337–449. doi:10.1002/9780470747018.ch10.
 
9.
GB 50011-2010, Code for Seismic Design of Buildings, China Building Industry Press, Beijing, China, 2010.
 
10.
Kaliszky, S, Vásárhelyi, A and Lógó, J 1991. The Time History Analysis of Viscoelastic Structures by Mathematical Programming. In: Brüller O.S., Mannl V., Najar J. (eds) Advances in Continuum Mechanics. Berlin, Heidelberg, Springer, 488–499. doi:10.1007/978-3-642-48890-0_39.
 
11.
Kaplan, H and Ylmaz, S 2012. Seismic Strengthening of Reinforced Concrete Buildings. Earthquake-Resistant Structures - Design, Assessment and Rehabilitation. In. Moustafa A. (ed) Earthquake-Resistant Structures, IntechOpen, 407-428. doi:10.5772/28854.
 
12.
Li, HN, Xiao, SY and Huo, LS 2010. Lessons Learnt from Building Damages in the Wenchuan Earthquake. Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments, 12th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments; and Fourth NASA/ARO/ASCE Workshop on Granular Materials in Lunar and Martian Exploration 3253-3261 doi:10.1061/41096(366)310.
 
13.
Li, S, Zhu, T, Lu, Y and Li, X 2016. Effect of Temperature Variation on Bond Characteristics between CFRP and Steel Plate. International Journal of Polymer Science, 2016, 1-8. https://doi.org/10.1155/2016/5....
 
14.
Manisekar, R 2018. Effect of External Post-tensioning in Retrofitting of RC Beams. Journal of The Institution of Engineers (India): Series A, 99(3), 495–501. doi:10.1007/s40030-018-0312-9.
 
15.
Mohsenian, V, Gharaei-Moghaddam, N and Hajirasouliha, I 2020. Reliability analysis and multi-level response modification factors for buckling restrained braced frames. Journal of Constructional Steel Research, 171, 106-137. doi:10.1016/j.jcsr.2020.106137.
 
16.
Momenzadeh, S, Seker, O, Faytarouni, M and Shen, J 2017. Seismic performance of all-steel buckling-controlled braces with various cross-sections. Journal of Constructional Steel Research, 139, 44–61. doi:10.1016/j.jcsr.2017.09.003.
 
17.
Naser, AF and Wang, Z 2011. Damage Investigation, Strengthening, and Repair of Jilin Highway Double-Curved Arch Concrete Bridge in China. Procedia Engineering 14, 2294–2300. doi: 10.1016/j.proeng.2011.07.289.
 
18.
Nguyen, PL, Vu, XH and Ferrier, E 2019. Thermo-mechanical performance of Carbon Fiber Reinforced Polymer (CFRP), with and without fire protection material, under combined elevated temperature and mechanical loading conditions. Composites Part B:Engineering, 169, 164-173. https://doi.org/10.1016/j.comp....
 
19.
Pun, SK, Liu, C and Langston, C 2006. Case Study of Demolition Costs of Residential Buildings. Construction Management and Economics, 24(9), 967–976. doi:10.1080/01446190500512024.
 
20.
Recupero, A, Spinella, N, Colajanni, P and Scilipoti, CD 2014. Increasing the Capacity of Existing Bridges by Using Unbonded Prestressing Technology: A Case Study. Advances in Civil Engineering, 2014, 1-10. https://doi.org/10.1155/2014/8....
 
21.
Romanichen, RM and Souza, RA 2019. Reinforced concrete corbels strengthened with external prestressing. Revista Ibracon de Estruturas e Materiais, 12(4), 812-831. https://dx.doi.org/10.1590/s19....
 
22.
Scheerer, S, Zobel, R, Müller, E, Senckpiel-Peters, T, Schmidt, A and Curbach, M 2019. Flexural Strengthening of RC Structures with TRC—Experimental Observations, Design Approach and Application. Applied Sciences 9, 13-22. https://doi.org/10.3390/app907....
 
23.
Siddika, A, Saha, K, Mahmud, MS, Roy, SC, Mamun, MAA and Alyousef, R 2019. Performance and failure analysis of carbon fiber-reinforced polymer (CFRP) strengthened reinforced concrete (RC) beams. Applied Sciences, 1:1617. doi:10.1007/s42452-019-1675-x.
 
24.
Wang, Q, Li, J, Liao, W, Zhang, L and Qin, X 2011. Building Damages in Deyang City by the 2008 Wenchuan Earthquake. Geodesy and Geodynamics 2(4), 59–63. doi:10.3724/sp.j.1246.2011.00007.2.
 
25.
Wang, W and Guo, L 2006. Experimental study and analysis of RC beams strengthened with CFRP laminates under sustaining load. International Journal of Solids and Structures, 43(6), 1372-1387. https://doi.org/10.1016/j.ijso....
 
26.
Wang, Y 2010. Revision of Seismic Design Codes Corresponding to Building Damages in the ‘5.12’ Wenchuan Earthquake. Earthquake Engineering and Engineering Vibration 9(2), 147–155. doi:10.1007/s11803-010-0001-9.
 
27.
Yuan, X, Zhu, C, Hu, J and Zhang, Y 2019. Crack and mechanical behavior of CFRP plate-reinforced bridge roofs under high temperature with different anchoring measures. Latin American Journal of Solids and Structures, 16(6), 1-20. 2019. https://dx.doi.org/10.1590/167....
 
eISSN:2450-8594
ISSN:2080-5187