Application of slit link beam in eccentrically braced frames

Abstract Slit dampers are a specific type of metallic yielding dampers, for which many studies have been conducted in recent years, to investigate their behavior and possible applications in structures. In this paper, by considering the behavior of this type of dampers, the use of slit link beam in eccentrically braced frames is proposed. A slit link beam is a link beam in which the beam web is divided into a number of vertical links using slits/openings. The geometry of the links is designed to ensure uniform distribution of normal stress along them. Analytical equations are developed to predict the behavior of the slit link beam and the eccentrically braced frame. The behavior of the proposed system is studied using verified numerical analyses in Abaqus software. The “Ductile Damage” model is used to predict the failure in the numerical models. After verifying the numerical analysis, parametric studies are conducted on the eccentrically braced frames with slit link beams. In this regard, various geometric parameters of these frames are considered and their effects on the behavior of the proposed system are determined. Based on the results of this study, the proposed system has a high energy dissipation capacity, when the limitations of this study for the slit link beam geometry and the braced frame are observed. Consequently, a well-designed eccentrically braced frame with slit link beam can be used as an efficient lateral load resisting system and it can have advantages over the conventional link beam, when the link beam is long.

[1]  Rohola Rahnavard,et al.  Numerical study on important parameters of composite steel-concrete shear walls , 2016 .

[2]  Matthew R. Eatherton,et al.  Hybrid simulation testing of a self‐centering rocking steel braced frame system , 2014 .

[3]  Faris Albermani,et al.  Yielding shear panel device for passive energy dissipation , 2013 .

[4]  Egor P. Popov,et al.  ECCENTRICALLY BRACED STEEL FRAMES FOR EARTHQUAKS , 1978 .

[5]  Michael D. Engelhardt,et al.  Experimental Study of Local Buckling, Overstrength, and Fracture of Links in Eccentrically Braced Frames , 2005 .

[6]  Shuangshuang Jin,et al.  Numerical and experimental investigation of the full-scale buckling-restrained steel plate shear wall with inclined slots , 2019, Thin-Walled Structures.

[7]  Constantin Christopoulos,et al.  Cast Steel Yielding Brace System for Concentrically Braced Frames: Concept Development and Experimental Validations , 2012 .

[8]  Masayoshi Nakashima,et al.  Online test of building frame with slit-wall dampers capable of condition assessment , 2010 .

[10]  Egor P. Popov,et al.  Characteristics of eccentrically braced frames , 1984 .

[11]  Hiroshi Tagawa,et al.  Evaluation of vibration control system with U-dampers based on quasi-linear motion mechanism , 2012 .

[12]  Mahmud Ashraf,et al.  Theoretical evaluation of yielding shear panel device for passive energy dissipation , 2009 .

[13]  H. Shariatmadar,et al.  Seismic response modification factor for steel slit panel-frames , 2019, Engineering Structures.

[14]  Egor P. Popov,et al.  Experimental Performance of Long Links in Eccentrically Braced Frames , 1992 .

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

[16]  C. Matsui,et al.  Experimental Study on Steel Shear Wall with Slits , 2003 .

[17]  Egor P. Popov,et al.  Inelastic behavior of eccentrically braced steel frames under cyclic loadings , 1977 .

[18]  Keh‐Chyuan Tsai,et al.  Design of Steel Triangular Plate Energy Absorbers for Seismic-Resistant Construction , 1993 .

[19]  Gregory G. Deierlein,et al.  Earthquake resilient steel braced frames with controlled rocking and energy dissipating fuses , 2011 .

[20]  Mohamed F. Suleiman,et al.  Evaluation on eccentrically braced frame with single and double shear panels , 2017 .

[21]  G. Cortés,et al.  Experimental evaluation of steel slit panel–frames for seismic resistance , 2011 .

[22]  Mohammed Karim,et al.  Impact of the Boeing 767 Aircraft into the World Trade Center , 2005 .

[23]  Kailai Deng,et al.  Shape optimization design of steel shear panel dampers , 2014 .

[24]  Rohola Rahnavard,et al.  Investigating modeling approaches of buckling-restrained braces under cyclic loads , 2018, Case Studies in Construction Materials.

[25]  Gang Li,et al.  Experimental study of structure with dual function metallic dampers , 2007 .

[26]  Chia-Ming Uang,et al.  Effect of Flange Width-Thickness Ratio on Eccentrically Braced Frames Link Cyclic Rotation Capacity , 2005 .

[27]  K. Bayat,et al.  Seismic performance of beam to column connections with T-shaped slit dampers , 2019, Thin-Walled Structures.

[28]  Morteza Bastami,et al.  Development of Eccentrically Interconnected Braced Frame (EIC-BF) for seismic regions , 2018, Thin-Walled Structures.

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

[30]  Wl L. Qu,et al.  Control of Wind-Excited Truss Tower Using Semiactive Friction Damper , 2001 .

[31]  Shervin Maleki,et al.  Pipe damper, Part I: Experimental and analytical study , 2010 .

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

[33]  Junichi Sakai,et al.  Cyclic tests on steel and concrete‐filled tube frames with Slit Walls , 2007 .

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

[35]  Egor P. Popov,et al.  Seismic eccentrically braced frames , 1988 .

[36]  S. Shahbeyk,et al.  Numerical and experimental study of comb-teeth metallic yielding dampers , 2016 .

[37]  Chia-Ming Uang,et al.  Testing Protocol for Short Links in Eccentrically Braced Frames , 2006 .

[38]  Rohola Rahnavard,et al.  Analytical study on new types of reduced beam section moment connections affecting cyclic behavior , 2015 .

[39]  Amadeo Benavent-Climent,et al.  A brace-type seismic damper based on yielding the walls of hollow structural sections , 2010 .

[40]  S. Shahbeyk,et al.  Seismic Behavior of Steel Frames Equipped with Comb-Teeth Metallic Yielding Dampers , 2018, International Journal of Steel Structures.

[41]  E. P. Popov,et al.  Seismic Behavior of Active Beam Links in Eccentrically Braced Frames , 1983 .

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