Semi-active hybrid control systems for nonlinear buildings against near-field earthquakes

Because of the high peak acceleration and high velocity pulse with long period, near-field earthquakes, such as Northridge, Kobe and Chi-Chi earthquakes, are responsible for the destruction and severe damage to civil infrastructures. Under this circumstance, the low-damping passive base isolation system alone cannot ensure the safety of building structures. The purpose of this paper is to present the safety performances of various types of hybrid control systems for nonlinear buildings against near-field earthquakes. Hybrid control systems considered consist of mainly the base isolation system and either the passive control devices or the semi-active dampers or the combination thereof. Passive control systems studied involve viscous dampers and friction dampers, whereas two newly proposed semi-active control systems are investigated including the resetting semi-active stiffness damper and the semi-active electromagnetic friction damper. The elasto-plastic behaviors of both the base-isolation system and the building have been considered in the analysis. Extensive simulation studies have been conducted for control of base-isolated buildings subject to various near-field earthquakes. Simulation results demonstrate that the newly proposed resetting semi-active stiffness damper and semi-active electromagnetic friction dampers are quite effective in protecting the safety of building structures against near-filed earthquakes.

[1]  Zexiang Li,et al.  Closure of "Control of Hysteretic System Using Velocity and Acceleration Feedbacks" , 1992 .

[2]  T. T. Soong,et al.  Base isolated structures with active control , 1987 .

[3]  Robert D. Hanson,et al.  Electrorheological Dampers, Part I: Analysis and Design , 1996 .

[4]  Robert D. Hanson,et al.  Electrorheological Dampers, Part II: Testing and Modeling , 1996 .

[5]  Michael D. Symans,et al.  Fuzzy logic control of bridge structures using intelligent semi‐active seismic isolation systems , 1999 .

[6]  Takuji Kobori,et al.  Seismic response controlled structure with Active Variable Stiffness system , 1993 .

[7]  J. N. Yang,et al.  Sliding Mode Control for Seismically Excited Linear Structures , 1995 .

[8]  Jann N. Yang,et al.  RESETTING SEMIACTIVE STIFFNESS DAMPER FOR SEISMIC RESPONSE CONTROL , 2000 .

[9]  Billie F. Spencer,et al.  Controlling buildings: a new frontier in feedback , 1997 .

[10]  Zexiang Li,et al.  Generalization of Optimal Control Theory: Linear and Nonlinear Control , 1994 .

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

[12]  Faryar Jabbari,et al.  A New Approach to Shock Isolation and Vibration Suppression Using a Resetable Actuator , 2000 .

[13]  A. K. Agrawal,et al.  A Semi-Active Electromagnetic Friction Damper for Response Control of Structures , 2000 .

[14]  Zexiang Li,et al.  Control of seismic-excited buildings using active variable stiffness systems , 1996 .

[15]  Satish Nagarajaiah,et al.  Control of Sliding‐Isolated Bridge with Absolute Acceleration Feedback , 1993 .

[16]  Zexiang Li,et al.  Stochastic hybrid control of hysteretic structures , 1994 .

[17]  J. N. Yang,et al.  A Semi-Active Hybrid Isolation System for Buildings Subject to Near-Field Earthquakes , 2000 .

[18]  Kazuhiko Kawashima,et al.  Hybrid control of seismic‐excited bridge structures , 1995 .

[19]  Haluk Aktan,et al.  Abating Earthquake Effects on Buildings by Active Slip Brace Devices , 1995 .

[20]  Shirley J. Dyke,et al.  Phenomenological Model of a Magnetorheological Damper , 1996 .

[21]  Anil K. Agrawal,et al.  OPTIMAL POLYNOMIAL CONTROL FOR SEISMICALLY EXCITED NON‐LINEAR AND HYSTERETIC STRUCTURES , 1996 .

[22]  Billie F. Spencer,et al.  On the current status of magnetorheological dampers: seismic protection of full-scale structures , 1997, Proceedings of the 1997 American Control Conference (Cat. No.97CH36041).

[23]  Andrei M. Reinhorn,et al.  Control of Sliding-Isolated Buildings Using Sliding-Mode Control , 1996 .

[24]  Zexiang Li,et al.  Aseismic hybrid control of nonlinear and hysteretic structures. II , 1992 .

[25]  Zexiang Li,et al.  Control of sliding-isolated buildings using dynamic linearization , 1994 .

[26]  Satish Nagarajaiah,et al.  EARTHQUAKE PROTECTION OF BRIDGES USING SLIDING ISOLATION SYSTEM AND MR DAMPERS , 2001 .

[27]  S C Liu,et al.  Aseismic Hybrid Control Systems for Building Structures , 1991 .

[28]  Anil K. Agrawal,et al.  Semiactive control strategies for buildings subject to near-field earthquakes , 2000, Smart Structures.

[29]  Shirley J. Dyke,et al.  PHENOMENOLOGICAL MODEL FOR MAGNETORHEOLOGICAL DAMPERS , 1997 .

[30]  Satish Nagarajaiah,et al.  Seismic Response of Sliding Isolated Bridges with Smart Dampers Subjected to Near Source Ground Motions , 2000 .