Seismic energy factor of self-centering systems subjected to near-fault earthquake ground motions

Abstract This research focuses on the seismic energy factor of self-centering systems. Based on energy balance concept, the energy factor of self-centering systems is derived. To clarify the influence of hysteretic parameters on the energy factor, nonlinear dynamic analyses of flag-shaped single-degree-of-freedom systems are performed. An ensemble of near-fault earthquake ground motion records is used as excitations. Numerical evaluations considering different combinations of hysteretic nonlinear parameters including the post-yielding stiffness ratio and ductility factor are performed. A comparison with the widely used design spectra is also made. The dispersion of analyses results is also presented. Results indicate that the energy factor of self-centering systems is appreciably influenced by nonlinear parameters (the ductility factor and post-yielding stiffness ratio). Results of this study are instructive for the revelation of the energy balance mode of self-centering systems, and they can be helpful to enhance and improve the current procedures based on energy balance concept.

[1]  Siddhartha Ghosh,et al.  Performance-based plastic design of steel plate shear walls , 2013 .

[2]  Ke Ke,et al.  The energy factor of systems considering multiple yielding stages during ground motions , 2015 .

[3]  Mihailo D. Trifunac,et al.  A note on strength-reduction factors for design of structures near earthquake faults , 2008 .

[4]  Robert Tremblay,et al.  Self-Centering Energy Dissipative Bracing System for the Seismic Resistance of Structures: Development and Validation , 2008 .

[5]  Andre Filiatrault,et al.  Seismic response of self‐centring hysteretic SDOF systems , 2002 .

[6]  George D. Hatzigeorgiou,et al.  Ductility demand spectra for multiple near- and far-fault earthquakes , 2010 .

[7]  Dipti Ranjan Sahoo,et al.  PERFORMANCE-BASED PLASTIC DESIGN METHOD FOR BUCKLING RESTRAINED BRACED FRAMES , 2010 .

[8]  Gokhan Pekcan,et al.  Enhancing seismic resilience using truss girder frame systems with supplemental devices , 2014 .

[9]  Richard Sause,et al.  Seismic Performance of Steel Self-Centering, Moment-Resisting Frame: Hybrid Simulations under Design Basis Earthquake , 2013 .

[10]  Yi Jiang,et al.  A modified approach of energy balance concept based multimode pushover analysis to estimate seismic demands for buildings , 2010 .

[11]  Ke Ke,et al.  Energy-based damage-control design of steel frames with steel slit walls , 2014 .

[12]  Jinkoo Kim,et al.  Energy-based seismic design of buckling-restrained braced frames using hysteretic energy spectrum , 2006 .

[13]  Yahya C. Kurama,et al.  SDOF Demand Index Relationships for Performance-Based Seismic Design , 2003 .

[14]  A. Chopra,et al.  Inelastic Deformation Ratios for Design and Evaluation of Structures: Single-Degree-of- Freedom Bilinear Systems , 2004 .

[15]  George D. Hatzigeorgiou,et al.  Inelastic displacement ratios for SDOF structures subjected to repeated earthquakes , 2009 .

[16]  Anil K. Chopra,et al.  Direct Displacement-Based Design: Use of Inelastic vs. Elastic Design Spectra , 2001 .

[17]  Matthew R. Eatherton,et al.  Residual Drifts of Self-Centering Systems Including Effects of Ambient Building Resistance , 2011 .

[18]  Theodore L. Karavasilis,et al.  Seismic structural and non-structural performance evaluation of highly damped self-centering and conventional systems , 2011 .

[19]  Gregory A. MacRae,et al.  Residual Displacement Response Spectrum , 1998 .

[20]  Subhash C. Goel,et al.  Application of Energy Balance Concept in Seismic Evaluation of Structures , 2009 .

[21]  Masayoshi Nakashima,et al.  ENERGY INPUT AND DISSIPATION BEHAVIOUR OF STRUCTURES WITH HYSTERETIC DAMPERS , 1996 .

[22]  Subhash C. Goel,et al.  Performance-based design and collapse evaluation of Buckling Restrained Knee Braced Truss Moment Frames , 2014 .

[23]  Eduardo Miranda,et al.  Site-Dependent Strength-Reduction Factors , 1993 .

[24]  Mervyn J. Kowalsky,et al.  Displacement-based seismic design of structures , 2007 .