Numerical and experimental analysis of combined behavior of shear-type friction damper and non-uniform strip damper for multi-level seismic protection

Abstract A new hybrid damper which combines a friction damper and steel strip damper is proposed for improving the seismic performance of structures at multiple levels of ground motion. In order to investigate the combined behavior of the proposed damper, quasi-static cyclic tests were carried out on ten specimens. Experimental results demonstrated that hysteretic response was stable, and multi-phased behavior (i.e., activation of two different kinds of dampers) functioned as intended. However, depending on the type of strip damper applied, the behavior and failure modes showed distinct differences due to rotational motion induced during combined behavior; deformation and energy dissipation capacities were enhanced when a strip damper with adequate out-of-plane stiffness was applied. Furthermore, numerical analysis based on both material strength and expected strength well represented behavioral characteristics of the damper, and dissipated energy was reliably predicted. It is expected that the proposed analytical model can be practically applied to predict the performance of structures strengthened by the hybrid damper.

[1]  T. T. Soong,et al.  Supplemental energy dissipation: state-of-the-art and state-of-the- practice , 2002 .

[2]  N. Null.  Minimum Design Loads for Buildings and Other Structures , 2003 .

[3]  Finley A. Charney,et al.  A hybrid passive control device for steel structures, I: Development and analysis , 2010 .

[4]  Young-Kyu Ju,et al.  Non-uniform steel strip dampers subjected to cyclic loadings , 2015 .

[5]  T. T. Soong,et al.  Passive Energy Dissipation Systems in Structural Engineering , 1997 .

[6]  James M. Ricles,et al.  Seismic design and evaluation of steel moment‐resisting frames with compressed elastomer dampers , 2012 .

[7]  In-Tae Hwang,et al.  Shear Capacity of SAFE Friction Damper Using Break Pad of Automobile , 2013 .

[8]  Sang-Hoon Oh,et al.  Seismic performance of steel structures with slit dampers , 2009 .

[9]  Michael Montgomery,et al.  Experimental Validation of Viscoelastic Coupling Dampers for Enhanced Dynamic Performance of High-Rise Buildings , 2015 .

[10]  Yi Min Xie,et al.  Shape optimization of metallic yielding devices for passive mitigation of seismic energy , 2010 .

[11]  T. T. Soong,et al.  STRUCTURAL CONTROL: PAST, PRESENT, AND FUTURE , 1997 .

[12]  Young-Kyu Ju,et al.  Modified Fatigue Model for Hourglass-Shaped Steel Strip Damper Subjected to Cyclic Loadings , 2015 .

[13]  B. Uy,et al.  Design Rules, Experimental Evaluation, and Fracture Models for High-Strength and Stainless-Steel Hourglass Shape Energy Dissipation Devices , 2014 .

[14]  Y. Ju,et al.  Flexural Test of a Composite Beam Using Asymmetric Steel Section with Web Openings , 2009 .

[15]  E. Rabinowicz,et al.  Friction and Wear of Materials , 1966 .

[16]  Young Ju Kim,et al.  Cyclic Behavior of Diagrid Nodes with H-Section Braces , 2010 .

[17]  Michael Montgomery,et al.  Viscoelastic coupling dampers (VCDs) for enhanced wind and seismic performance of high‐rise buildings , 2013 .

[18]  Michael Willford,et al.  The damped outrigger concept for tall buildings , 2007 .

[19]  Faris Albermani,et al.  Experimental study of steel slit damper for passive energy dissipation , 2008 .

[20]  Young-Kyu Ju,et al.  Wind‐induced vibration control of tall buildings using hybrid buckling‐restrained braces , 2014 .

[21]  Peter Blau,et al.  Friction Science and Technology: From Concepts to Applications, Second Edition , 2008 .

[22]  Martin S. Williams,et al.  Development of nonlinear analytical model and seismic analyses of a steel frame with self-centering devices and viscoelastic dampers , 2011 .

[23]  Andrew S. Whittaker,et al.  Energy dissipation systems for seismic applications: Current practice and recent developments , 2008 .

[24]  Y. Ibrahim,et al.  A visco-plastic device for seismic protection of structures , 2007 .

[25]  James M. Ricles,et al.  Experimental evaluation of the seismic performance of steel MRFs with compressed elastomer dampers using large-scale real-time hybrid simulation , 2011 .

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