Seismic Protection of a Building Complex Using Variable Friction Damper: Experimental Investigation

This study presents an experimental investigation of seismic control of a building complex using variable friction damper. The laboratory-scale building complex was composed of a 12-story building and a three-story podium structure coupled in different configurations. The laboratory-scale variable friction damper was tailor made with a piezoelectric actuator. The performance test of the piezoelectric actuator was carried out to identify its characteristics. The performance test was then conducted on the piezo-driven variable friction damper under either constant or varying voltage to identify its motion-independent characteristics. Based on the characterization results, a close-loop operating scheme was proposed together with two classes of semiactive controllers: local-feedback controller and global-feedback controller, for real-time manipulation of the damper. The building complex was finally tested in uncoupled, rigid-coupled, passive damper-coupled, and semiactive damper-coupled configurations. The control performance of variable friction damper for the building complex was examined and compared with other cases. The test results showed that semiactive coupling control was promising for reducing seismic responses of both buildings.

[1]  Genda Chen,et al.  Shake table tests of a quarter‐scale three‐storey building model with piezoelectric friction dampers , 2004 .

[2]  Kazuto Seto,et al.  Coupled Building Control Using Acceleration Feedback , 2003 .

[3]  You-Lin Xu,et al.  Seismic response control of a building complex utilizing passive friction damper: experimental investigation , 2006 .

[4]  Shirley J. Dyke,et al.  Benchmark problems in structural control: part I—Active Mass Driver system , 1998 .

[5]  Marc N. Samuelson,et al.  Experimental and analytical studies of a novel semi-active piezoelectric coulomb damper , 2002, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[6]  Kenji Uchino,et al.  Tailoring the Performance of Ceramic-metal Piezocomposite Actuators, 'cymbals' , 1998 .

[7]  Jack P. Moehle,et al.  Seismic Response and Design of Setback Buildings , 1990 .

[8]  Anil K. Agrawal,et al.  Novel Semiactive Friction Controller for Linear Structures against Earthquakes , 2003 .

[9]  Yl L. Xu,et al.  Semi-active control of a building complex with variable friction dampers , 2007 .

[10]  Gabriel T. Garrett,et al.  Piezoelectric friction dampers for earthquake mitigation of buildings: design, fabrication, and characterization , 2004 .

[11]  Genda Chen,et al.  Semiactive Control of the 20-Story Benchmark Building with Piezoelectric Friction Dampers , 2004 .

[12]  Yl L. Xu,et al.  Closed‐form solution for seismic response of adjacent buildings with linear quadratic Gaussian controllers , 2002 .

[13]  Haluk Aktan,et al.  Active control of building seismic response by energy dissipation , 1995 .

[14]  Satish Nagarajaiah,et al.  Smart base isolated buildings with variable friction systems: H∞ controller and SAIVF device , 2006 .

[15]  José A. Inaudi,et al.  Modulated homogeneous friction : A semi-active damping strategy , 1997 .

[16]  Shirley J. Dyke,et al.  Benchmark Control Problems for Seismically Excited Nonlinear Buildings , 2004 .

[17]  Billie F. Spencer,et al.  Coupled building control using smart damping strategies , 2000, Smart Structures.

[18]  Yl L. Xu,et al.  Semiactive Seismic Response Control of Buildings with Podium Structure , 2005 .