Seismic Response of Adjacent Steel Structures Connected by Passive Device

In this study, the seismic response of adjacent steel structures linked to one another at different floor levels by passive devices is evaluated. Two types of connectors are considered: linear viscous dampers and linear springs. Various combinations of type and location of the connectors are analyzed for wide ranges of their characteristics. Influence of the structural properties (ratio of number of stories and ratio of fundamental periods) and the properties of the excitation (frequency) on the story response are also investigated. The results show that reduction of the story drift and the floor acceleration is not possible if the structures are connected to one another solely by the springs. However, it is feasible if the structures are linked to one another by either: (a) viscous dampers or (b) combinations of viscous dampers and springs. Herein, response reductions corresponding to case (b) are generally smaller than those corresponding to case (a). Also, the coupling control approach is more effective in controlling the response than the uncoupled approach.

[1]  T. T. Soong,et al.  Random Vibration of Mechanical and Structural Systems , 1992 .

[2]  T. T. Soong,et al.  Seismic Design of Viscoelastic Dampers for Structural Applications , 1992 .

[3]  R. S. Jangid,et al.  Seismic analysis of structures connected with friction dampers , 2006 .

[4]  J. Enrique Luco,et al.  Optimal damping between two adjacent elastic structures , 1998 .

[5]  Diego Lopez-Garcia,et al.  Algorithm for design of controlled motion of adjacent structures , 2011 .

[6]  Jinkoo Kim,et al.  Seismic performance of structures connected by viscoelastic dampers , 2006 .

[7]  Bruce D. Westermo,et al.  The dynamics of interstructural connection to prevent pounding , 1989 .

[8]  Erik A. Johnson,et al.  Semiactive Connected Control Method for Adjacent Multidegree-of-Freedom Buildings , 2007 .

[9]  T. T. Soong,et al.  Efficiency of a simple approach to damper allocation in MDOF structures , 2002 .

[10]  Erik A. Johnson,et al.  Coupled Building Control Considering the Effects of Building/Connector Configuration , 2006 .

[11]  Yl L. Xu,et al.  Dynamic response of damper-connected adjacent buildings under earthquake excitation , 1999 .

[12]  Gian Paolo Cimellaro.  Simultaneous stiffness–damping optimization of structures with respect to acceleration, displacement and base shear , 2007 .

[13]  Andrei M. Reinhorn,et al.  Evaluation, Prevention and Mitigation of Pounding Effects in Building Structures , 1997 .

[14]  Fumio Doi,et al.  Bending and Torsional Vibration Control for Flexible Structures arranged in Parallel. , 1998 .

[15]  Tomaso Trombetti,et al.  ADDED VISCOUS DAMPERS IN SHEAR-TYPE STRUCTURES: THE EFFECTIVENESS OF MASS PROPORTIONAL DAMPING , 2004 .

[16]  Andre Filiatrault,et al.  Nonlinear earthquake response of structurally interconnected buildings , 1992 .

[17]  G. Cimellaro,et al.  THEORY ED EXPERIMENTATION ON PASSIVE CONTROL OF ADJACENT STRUCTURES , 2002 .

[18]  Harry G. Harris,et al.  Structural Modeling and Experimental Techniques, Second Edition , 1999 .

[19]  Yl L. Xu,et al.  Experimental Seismic Study of Adjacent Buildings with Fluid Dampers , 2003 .

[20]  Kazuhiko Kasai,et al.  SPECTRAL RELATIVE MOTION OF TWO STRUCTURES DUE TO SEISMIC TRAVEL WAVES , 1996 .