Application Procedure for Optimized Placement of Buckling Restrained Braces in Reinforced Concrete Building Structures

Authors: S. A. Faizi, S. Yoshitomi

Abstract:

The optimal design procedure of buckling restrained braces (BRBs) in reinforced concrete (RC) building structures can provide the distribution of horizontal stiffness of BRBs at each story, which minimizes story drift response of the structure under the constraint of specified total stiffness of BRBs. In this paper, a simple rule is proposed to convert continuous horizontal stiffness of BRBs into sectional sizes of BRB which are available from standardized section list assuming realistic structural design stage.

Keywords: Buckling restrained brace, building engineering, optimal damper placement, structural engineering.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1129868

References:

[1] Minimum Design Loads for Buildings and Other Structures, ASCE 7-05, chapter.12
[2] Mirtaheri. M., Gheidi, A., Zandi, A. P., Alanjari, P., and Samani, H. R.: Experimental optimization studies on steel core lengths in buckling restrained braces, Journal of Constructional Steel Research, ELSEVIER, Vol.67, 2011, pp.1244-1253.
[3] Aydin, E. and Boduroglu, M. H.: Optimal placement of steel diagonal braces for upgrading the seismic capacity of existing structures and its comparison with optimal dampers, Journal of Constructional Steel Research, ELSEVIER, Vol.64, 2008, pp.72-86.
[4] Allahdadian, S., Boroomand, B., and Barekatein, A. R.: Towards optimal design of bracing system of multi-story structures under harmonic base excitation a topology optimization scheme, Finite Elements in Analysis and Design, ELSEVIER, Vol.61, 2012, pp.60-74.
[5] Martinez, C. A., Curadelli, O., and Compagnoni, M. E.: Optimal placement of nonlinear hysteretic dampers on planar structures under seismic excitation, Engineering Structures, ELSEVIER, Vol. 65, 2014, pp.89-98.
[6] Sutcu, F., Takeuchi, T., and Matsui, R.: Seismic retrofit design method for RC buildings using buckling-restrained braces and steel frames, Journal of Constructional Steel Research, ELSEVIER, Vol.101, 2014, pp.304-313.
[7] Bosco, M., Marino, E.M., and Rossi, P.P.: Design of steel frames equipped with BRBs in the framework of Eurocode8, Journal of Constructional Steel Research, ELSEVIER, Vol.113, 2015, pp.43-57.
[8] Zona, A., Ragni, L., and Dall’Asta, A.: Sensitivity-based study of the influence of brace over-strength distributions on the seismic response of steel frames with BRBs, Engineering Structures, ELSEVIER, Vol.37, 2012, pp.179-192.
[9] Adachi, F., Yoshitomi, S., Tsuji, M., and Takewaki, I.: Nonlinear optimal oil damper in seismically controlled multi-story building frame, Soil Dynamics and Earthquake Engineering, ELSEVIER, Vol.44, 2013, pp.1-13.
[10] Farhat, F., Nakamura, S., and Takahashi, K.: Application of genetic algorithm to optimization of buckling restrained braces for seismic upgrading of existing structures, Computers and Structures, ELSEVIER, Vol.87, 2009, pp.110-119.
[11] S., A. Faizi. and S. Yoshitomi: Optimal placement of buckling restrained braces in reinforced concrete building structures, proceedings of JAEE annual meeting 2016.