000004899 001__ 4899
000004899 005__ 20141119144603.0
000004899 04107 $$aeng
000004899 046__ $$k2002-06-02
000004899 100__ $$aWongprasert, Nat
000004899 24500 $$aMODELING AND SIMULATION OF A SEMI-ACTIVE BASE ISOLATION SYSTEM FOR EARTHQUAKE HAZARD MITIGATION

000004899 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004899 260__ $$bColumbia University in the City of New York
000004899 506__ $$arestricted
000004899 520__ $$2eng$$aAn analytical and numerical study of a base-isolated steel frame building subjected to earthquake excitation is presented in this paper. The isolation system consists of elastomeric bearings combined with semi-active dampers. Mathematical models of the isolation system components are developed using data from experimental system identification testing. The mechanical properties of the dampers are modulated based on an optimal control algorithm which was developed to effectively suppress vibrations of the structural system when subjected to various earthquake ground excitations. Numerical simulations are performed using historical earthquake records to evaluate the dynamic response of the structure and the isolation system when different damping mechanisms (passive, semi-active, and active) are incorporated within the isolation system. The numerical simulations demonstrate that semi-active damping is effective in simultaneously controlling the response of the structure and the isolation system. Such control appears to be particularly applicable to structures subjected to disparate ground motions such as frequent, weak earthquakes versus infrequent, strong earthquakes or far-field versus near-field earthquakes.

000004899 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004899 653__ $$aBase Isolation, Variable Fluid Damper, Rubber Bearing, Semi-Active Control, H∞ Optimal Control, Fuzzy Gain-Scheduling.

000004899 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004899 720__ $$aWongprasert, Nat$$iSymans, Michael D.
000004899 8560_ $$ffischerc@itam.cas.cz
000004899 8564_ $$s243111$$uhttps://invenio.itam.cas.cz/record/4899/files/514.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004899 962__ $$r4594
000004899 980__ $$aPAPER