Seismic Performance of an Efficient Scissor-Jack-Damper Configuration

Energy-dissipating or damping systems have been widely used in new and retrofitted structures for reducing earthquake damage to structural frames. Most damping devices were installed using diagonal or chevronbrace configurations, until the development of toggle-brace and scissor-jack configurations. This paper presents a modified scissor-jack-damper configuration with substantially improved efficiency. The mechanical behavior of the efficient scissor-jack-damper configuration is analyzed theoretically, and a formula for the displacement magnification factor of the configuration is proposed. A steel-frame specimen installed with the efficient scissor-jack-damper configuration was tested to verify the accuracy of the formula. The seismic responses of an uncontrolled steel-frame structure and of two controlled structures, installed with a diagonal brace and efficient scissor-jack-damper configurations, were analyzed using SAP2000. The high efficiency of the proposed scissor-jack-damper configuration is thus verified for practical engineering situations.

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

[2]  J. S. Hwang,et al.  Analytical and Experimental Study of Toggle-Brace-Damper Systems , 2005 .

[3]  Guoliang Bai,et al.  Sensor Placement Optimization of Vibration Test on Medium-Speed Mill , 2015 .

[4]  Michael C. Constantinou,et al.  Energy Dissipation System Configurations for Improved Performance , 2000 .

[5]  Yin-Nan Huang,et al.  Design Formulations for Supplemental Viscous Dampers to Building Structures , 2008 .

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

[7]  Michael C. Constantinou,et al.  Testing Procedures for High Output Fluid Viscous Dampers Used in Building and Bridge Structures to Dissipate Seismic Energy , 1995 .

[8]  Robert D. Hanson,et al.  Seismic design with supplemental energy dissipation devices , 2001 .

[9]  Stefano Berton,et al.  Amplification System for Supplemental Damping Devices in Seismic Applications , 2005 .

[10]  Massimiliano Ferraioli,et al.  Behaviour Factor of code-designed steel moment-resisting frames , 2014 .

[11]  Henry C. Huang,et al.  Efficiency of the motion amplification device with viscous dampers and its application in high-rise buildings , 2009 .

[12]  José L. Almazán,et al.  Amplification system for concentrated and distributed energy dissipation devices , 2016 .

[13]  Raffaele Landolfo.  Seismic Design of Steel Structures: New Trends of Research and Updates of Eurocode 8 , 2018 .

[14]  Xiongjun He,et al.  Research on Fluid Viscous Damper Parameters of Cable-Stayed Bridge in Northwest China , 2017 .

[15]  Panos Tsopelas,et al.  TOGGLE-BRACE-DAMPER SEISMIC ENERGY DISSIPATION SYSTEMS , 2001 .

[16]  T. T. Soong,et al.  Passive Energy Dissipation Systems for Structural Design and Retrofit , 1998 .

[17]  Michael C. Constantinou,et al.  Scissor-Jack-Damper Energy Dissipation System , 2003 .