Analytical Investigation on Cyclic Response of Buckling-restrained Braces with Short Yielding Core Segments

다국어 초록 (Multilingual Abstract)

Buckling-restrained braced frames (BRBFs) are considered to be one of the efficient lateral force-resisting systems used in buildings located in the seismically active regions. Nearly symmetric hysteretic response of buckling-restrained braces (BRBs) in tension and compression due to the yielding of steel core plates helps the BRBFs to withstand the seismic excitations without causing any extensive damage to the primary frame members. However, BRBFs may exhibit the excessive post-earthquake residual drift response due to the low axial stiffness of BRBs under the strong ground motions. A reduction in the yielding core segments of BRBs results in the improved elastic and post-elastic axial stiffness of BRBs which may help in controlling the excessive residual drift response. This study is focussed on the analytical evaluation of hysteretic response of BRBs of varying lengths using finite element (FE) software. The results of FE study are further used to evaluate the inter-story and residual drift response of a 3-story braced frame fitted with BRBs of short core lengths (referred as SBRBF). Nonlinear dynamic analysis results of SBRBF are compared with the conventional BRBF and concentrically braced frame (CBF). It is concluded that the optimum reduction in yielding core lengths of BRBs can improve the overall seismic response of BRBFs with a reduction in the residual drift response.

참고문헌 (Reference)

• 1 Tsai, K. C, "Welded end-slot connection and de-bonding layers for buckling-restrained braces" 43 (43): 1785-1807, 2014
• 2 Daniels, M, "Towards characteristic over strength curves for buckling-restrained braces" 2011
• 3 Merritt, S, "Subassemblage testing of star seismic bucklingrestrained braces" Dept. of Structural Engineering, Univ. of California 2003
• 4 Kim, D. H, "Sub-assemblage test of buckling-restrained braces with H-shaped steel core" 24 (24): 243-256, 2014
• 5 Sahoo, D.,R, "Stiffness-Based Design for Mitigation of Residual Displacements of buckling-Restrained Braced Frames" 149 (149): 04014229-, 2014
• 6 Chou, C. C, "Steel buckling-restrained braced frames with single and dual corner gusset connections: seismic tests and analyses" 41 (41): 1137-1156, 2012
• 7 Christopoulos, C, "Self-centering energy dissipative bracing system for the seismic resistance of structure: Development and validation" 134 (134): 96-107, 2008
• 8 Tremblay, R, "Seismic testing and performance of buckling-restrained bracing systems" 33 (33): 183-198, 2006
• 9 Tremblay, R, "Seismic response of multistory buildings with selfcentering energy dissipative steel braces" 134 (134): 108-120, 2008
• 10 Fahnestock, L. A, "Seismic response and performance of buckling-restrained braced frames" 133 (133): 1195-1204, 2007
• 11 Sabelli, R, "Seismic demands on steel braced frame buildings with bucklingrestrained braces" 25 (25): 655-666, 2003
• 12 Chao, S. H, "Seismic behavior of steel buildings with hybrid braced frames" 139 (139): 1019-1032, 2012
• 13 Ahmad Fayeq Ghowsi, "Seismic Performance of Buckling-restrained Braced Frames with Varying Beam-column Connections" 한국강구조학회 13 (13): 607-621, 2013
• 14 Erochko, J, "Residual drift response of SMRFs and BRB frames in steel buildings designed according to ASCE 7-05" 137 (137): 589-599, 2011
• 15 Kiggins, S, "Reducing residual drift of buckling-restrained braced frames as a dual system" 28 (28): 1525-1532, 2006
• 16 Razavi, S. A, "Reduced length buckling restrained brace with steel plates as restraining segment" 2012
• 17 Tsai, K. C, "Pseudo-dynamic test of a full-scale CFT/BRB frame-part II: Seismic performance of buckling-restrained braces and connection" 37 (37): 1099-1115, 2008
• 18 Tsai, K. C, "Pseudo dynamic experimental response of a full scale CFT/BRB composite frame" 2003
• 19 Watanabe, A, "Properties of brace encased in bucklingrestrained concrete and steel tube" 1988
• 20 Sahoo, D. R, "Performance based plastic design method for buckling-restrained braces" 32 (32): 2950-2958, 2010
• 21 "PERFORM-3D. PERFROM-3D User’s Manual, Version 5"
• 22 Hoveidae, N, "Numerical investigation of seismic behavior of short-core all-steel buckling restrained braces" 114 : 89-99, 2015
• 23 Usami, T, "Low-cycle fatigue tests of a type of buckling restrained" 2011
• 24 Aiken, I. D, "Largescale testing of buckling-restrained braced frames" Tokyo Institute of Technology 2002
• 25 Al-Hamaydeh, M, "Key parameters influencing performance and failure modes for BRBs" 116 : 1-18, 2016
• 26 Jiang, Z, "Influence of design parameters of buckling-restrained brace on its performance" 105 : 130-150, 2015
• 27 Wang, C. L, "Improving low-cycle fatigue performance of highperformance buckling-restrained braces by toe- finished method" 16 : 1248-1268, 2012
• 28 Wu, A. C, "High-mode buckling responses of buckling-restrained brace core plates" 43 : 375-393, 2014
• 29 "FEMA 356. Prestandard and Commentary for the Seismic Rehabilitation of Buildings"
• 30 Pandikkadavath, M. S, "Experimental study on reduced-length buckling restrained braces under slow cyclic loading" 10 (10): 699-716, 2016
• 31 Mirtaheri, M, "Experimental optimization studies on steel core lengths in buckling restrained braces" 67 (67): 1244-1253, 2011
• 32 Palmer, K. D, "Experimental evaluation of cyclically loaded, large-scale, planar and 3-d buckling restrained braced frames" 101 : 415-425, 2014
• 33 Pettinga, D, "Effectiveness of simple approaches in mitigating residual deformations in buildings" 36 (36): 1763-1783, 2007
• 34 Chen, Q, "Effect of the un-bonding materials on the mechanic behavior of all-steel buckling restrained braces" 111 : 478-493, 2016
• 35 Takeuchi, T, "Effect of local buckling core plate restraint in buckling restrained braces" 44 : 304-311, 2012
• 36 Somerville, P.,G, "Development of ground motion time histories for phase 2 of the FEMA/SAC steel project" FEMA/SAC 1997
• 37 Clark, P, "Design procedures for buildings incorporating hysteretic damping devices" 1999
• 38 Ju, Y. K, "Component tests of buckling-restrained braces with unconstrained length" 31 (31): 507-516, 2009
• 39 Black, C. J, "Component testing, seismic evaluation and characterization of buckling-restrained braces" 130 (130): 880-894, 2004
• 40 Iwata, M, "Buckling-restrained brace using steel mortar planks: Performance evaluation as a hysteretic damper" 35 (35): 1807-1826, 2006
• 41 Iwata, M, "Buckling restrained braces as hysteretic dampers" 2000
• 42 Wu, B, "Buckling mechanism of steel core of buckling-restrained braces" 107 : 61-69, 2015
• 43 Usami, T, "Behavior of buckling restrained brace members" 211-216, 2003
• 44 Chen, C. C, "Application of low yield strength steel on controlled plastification ductile concentrically braced frames" 28 (28): 823-836, 2001
• 45 Eryasar, M. E, "An experimental study on steel-encased buckling-restrained brace hysteretic dampers" 39 (39): 561-581, 2010
• 46 "ASCE/SEI 7-10. Minimum design loads for buildings and other structures"
• 47 "ANSI/AISC 360-10. Specifications for structural steel buildings"
• 48 "ANSI/AISC 341-10. Seismic provisions for structural steel buildings"
• 49 ABAQUS, "ABAQUS User's Manual, Version 6.10"
• 50 Zhao, J, "A novel type of angle steel buckling-restrained brace: Cyclic behavior and failure mechanism" 40 (40): 1083-1102, 2011
• 51 Tang, X, "A fracture criterion for tubular bracing members and its application to inelastic dynamic analysis of braced steel structures" 285-290, 1988