Numerical Study: Effect of Various Link Length to Lateral Force in Eccentrically Braced Frame
Eccentrically Braced Frame (EBF) is an excellent steel frame system for resisting earthquake forces. This frame shows good performance in terms of stiffness and has excellent ductility. When it is subject to a severe seismic event, the links undergo inelastic deformations and become the primary source of energy dissipation. However, the performance of EBF is strongly influenced by the length of the links that are an essential part of the EBF system. Links should be limited not be too short or too long because it relates to the stiffness and ductility of the frame. The study of EBF on the 80-90s also limits the ratio both of e/L not exceed 0.5 and the diagonal brace angle between 40°- 60°. This research will review the influence of the length of the links varied from the e/L ratio of 0.005 to 0.38. This variation will divide the links into three types of yielding, i.e., the short link, intermediate link with shear dominance, and intermediate link with bending dominance. In this study, the behavior of various link lengths on Eccentrically Braced Frame will be evaluated using finite element analysis using MSC Patran and Nastran. The structure is modeled as a one-dimensional D-Braced EBF type that is given static monotonic load with displacement control. The results obtained in the form of load-displacement curves which will be analyzed in strength and ductility. In addition, an ultimate load normalization curve will be generated to obtain the load pattern for the various link length. The curve shows that the ultimate load on the EBF will decrease if there is an increase in link length. The significant decrease occurs when e/L > 0.2.
K. D. Hjelmstad and E. P. Popov, "Characteristics of Eccentrically Braced Frames," Journal of Structural Engineering, vol. 110, no. 02, pp. 340-353, 1984.
R. Becker and M. Ishler, Seismic Design Practice For Eccentrically Braced Frames Based on The 1994 UBC, Moraga,CA: Structural Steel Educational Council, 1996.
F. Wang, M. Su, M. Hong, Y. Guo and S. Li, "Cyclic behavior of Y-shaped eccentrically braced frames fabricated with high-strength steel composite," Journal of Constructional Steel Research, vol. 120, p. 176–187, 2016.
S. Caprili, N. Mussini, and W. Salvatore, "Experimental and Numerical Assessment of EBF Structures with Shear Links," Steel and Composite Structures, vol. 28, no. 2, pp. 123-138, 2018.
H. Noorinekoo, "Assesment of Behavior Factor of Eccentrically Braced Frame," Journal of Fundamental and Applied Sciences, pp. 676-692, 2017.
M. Mojarad, M. Daei, and M. Hejazi, "Optimal Stiffeners Spacing for Intermediate Link in Eccentrically Braced Frame to Increase Energy Dissipation," AUT Journal of Civil Engineering, vol. 1, no. 1, pp. 39-44, 2017.
G. Yiğitsoy, C. Topkaya, and T. Okazaki, "Stability of beams in steel eccentrically braced frames," Journal of Constructional Steel Research 96, pp. 14-25, 2014.
E. P. Popov and M. D. Engelhardt, "Seismic Eccentrically Braced Frames," Construct. Steel Research, 0143/974X/88, 321-354, 1988.
J. Bouwkamp, M. G. Vetr and A. Ghamari, "An analytical model for the inelastic cyclic response of eccentrically braced frame with vertical shear link (V-EBF)," Case Studies in Structural Engineering, vol. 6, pp. 31-44, 2016.
M. Bruneau, C. M. Uang and R. Sabelli, Ductile Design of Steel Structures 2nd Edition, United States: The McGraw-Hill Companies,Inc., 2011.
B. Budiono, Yurisman, and Nidiasari , "Perilaku Link Panjang denganPengaku Diagonal Badan pada Sistem Struktur Rangka Baja Tahan Gempa," in Pameran HAKI 2011 "Konstruksi Indonesia Melangkah ke Masa Depan", Jakarta, 2011.
American Institute of Steel Construction, Seismic Provisions for Structural Steel Building, Chicago: AISC, 2010.
R. Rahnavard, A. Hassanipour, M. Suleiman and A. Mokhtari, "Evaluation on Eccentrically Braced Frame with Single and Double Shear Panels," Journal of Building Engineering, vol. 10, pp. 13-25, 2017.
B. Suswanto, A. R. Amalia, E. Wahyuni and J. Wilson, "Numerical Behavior Study of Short Link, Intermediate Link and Long Link in Eccentrically Braced Frame Steel Structure," International Journal of Applied Engineering Research , vol. Volume 12, no. Number 21, pp. 11460-11471, 2017.
S. K. Azad and C. Topkaya, "A review of research on Steel Eccentrically Braced Frames," Journal of Constructional Steel Research, vol. 128, pp. 53-73, 2017.
A. Ghobarah and T. Ramadan, "Seismic Analysis of Links of Variation Lengths in Eccentrically Braced Frames," Canadian Journal of Civil Engineering, vol. 18, pp. 140-148, 1991.
- There are currently no refbacks.
Published by INSIGHT - Indonesian Society for Knowledge and Human Development