Seismic Analysis of Concentrically Braced Frame Systems with Self-Centering Friction Damping Braces

This paper presents a special type of bracing element termed self-centering friction damping brace (SFDB) for use in seismic-resistant concentrically braced frame (CBF) systems. The SFDB is a passive energy dissipation device with its core recentering component made of stranded superelastic Nitinol wires while enhanced energy dissipation mechanism of the SFDB is achieved through friction. Compared with conventional braces for steel frame buildings, SFDB has a few desirable performance characteristics such as minimized residual drifts of the CBF system and its ability to withstand several design level earthquakes without the need for replacement. The mechanical configuration of the SFDB is first described. A comparative study of SFDB frame and buckling restrained braced (BRB) frame was carried out, which is based on nonlinear dynamic analysis of two prototype CBF buildings — a three- and a six-story steel frame. Two suites of earthquake ground motions, which represent the frequent and design basis earthquakes for Los Angeles, were considered in the nonlinear time-history analysis. The results of the nonlinear time-history and pushover analysis show that the SFDB frame can achieve a seismic response level comparable to that of the BRB frame while having significantly reduced residual drifts. The SFDB thus has a potential to establish a new type of CBF system with self-centering capability.

[1]  Andre Filiatrault,et al.  Posttensioned Energy Dissipating Connections for Moment-Resisting Steel Frames , 2002 .

[2]  C. Valente,et al.  Shaking table tests on reinforced concrete frames without and with passive control systems , 2005 .

[3]  Stephen A. Mahin,et al.  Use of Partially Prestressed Reinforced Concrete Columns to Reduce Post-Earthquake Residual Displacements of Bridges , 2006 .

[4]  Reginald DesRoches,et al.  CYCLIC PROPERTIES OF SUPERELASTIC SHAPE MEMORY ALLOY WIRES AND BARS , 2004 .

[5]  Krzysztof Wilde,et al.  Base isolation system with shape memory alloy device for elevated highway bridges , 2000 .

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

[7]  H. Krawinkler,et al.  Estimation of seismic drift demands for frame structures , 2000 .

[8]  Tzong-Shuoh Yang,et al.  Slotted Bolted Connection Energy Dissipators , 1993 .

[9]  Andre Filiatrault,et al.  Performance Evaluation of Friction Damped Braced Steel Frames under Simulated Earthquake Loads , 1987 .

[10]  Chia-Ming Uang,et al.  Reducing residual drift of buckling-restrained braced frames as a dual system , 2006 .

[11]  Stefano Pampanin,et al.  TOWARDS PERFORMANCE-BASED SEISMIC DESIGN OF MDOF STRUCTURES WITH EXPLICIT CONSIDERATION OF RESIDUAL DEFORMATIONS , 2004 .

[12]  Robert E. Bachman,et al.  The Use of the Energy Dissipating Restraint for Seismic Hazard Mitigation , 1993 .

[13]  Stephen A. Mahin,et al.  Seismic demands on steel braced frame buildings with buckling-restrained braces , 2003 .

[14]  STEFANO PAMPANIN,et al.  PERFORMANCE-BASED SEISMIC RESPONSE OF FRAME STRUCTURES INCLUDING RESIDUAL DEFORMATIONS. PART II: MULTI-DEGREE OF FREEDOM SYSTEMS , 2003 .

[15]  Chia-Ming Uang,et al.  Research and Application of Buckling-Restrained Braced Frames , 2004 .

[16]  Y. Kurama,et al.  Lateral Load Behavior and Seismic Design of Unbonded Post-Tensioned Precast Concrete Walls , 1999 .

[17]  Richard Sause,et al.  Posttensioned Seismic-Resistant Connections for Steel Frames , 2001 .

[18]  Songye Zhu,et al.  A shape memory alloy-based reusable hysteretic damper for seismic hazard mitigation , 2007 .

[19]  Andrew S. Whittaker,et al.  Structural Control of Building Response Using Shape-Memory Alloys. Phase 1. , 1995 .

[20]  C. Tsai,et al.  TPEA Device as Seismic Damper for High-Rise Buildings , 1995 .

[21]  E. J. Graesser,et al.  Shape‐Memory Alloys as New Materials for Aseismic Isolation , 1991 .

[22]  C. V. Anderson,et al.  The Federal Emergency Management Agency (FEMA) , 2002 .

[23]  Cedric Marsh,et al.  RESPONSE OF FRICTION DAMPED BRACED FRAMES , 1982 .

[24]  Thalia Anagnos,et al.  Slotted Bolted Connections in Aseismic Design for Concentrically Braced Connections , 1989 .

[25]  Donatello Cardone,et al.  Implementation and testing of passive control devices based on shape memory alloys , 2000 .