Advanced Hysteretic Model of a Prototype Seismic Isolation System Made of Polymeric Bearings
PBN-AR
Instytucja
Wydział Inżynierii Lądowej i Środowiska (Politechnika Gdańska)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Applied Sciences-Basel (25pkt w roku publikacji)
ISSN
2076-3417
EISSN
Wydawca
DOI
URL
Rok publikacji
2018
Numer zeszytu
3
Strony od-do
1-18
Numer tomu
8
Link do pełnego tekstu
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Autorzy
(liczba autorów: 2)
Słowa kluczowe
BASE ISOLATION
DYNAMIC EXCITATIONS
HYSTERETIC BEHAVIOUR
POLYMERIC BEARINGS
SEISMIC PERFORMANCE
Streszczenia
Język
Treść
The present paper reports the results of acomprehensive study designed to verify the effectiveness of an advanced mathematical model in simulating the complex mechanical behaviour of a prototype seismic isolation system made of polymeric bearings (PBs). Firstly, in order to construct the seismic bearings considered in this research, a specially prepared flexible polymeric material with increased damping properties was employed. High effectiveness of PBs in reducing structural vibrations due to seismic excitations was already confirmed during a previously conducted shaking table investigation. In order to accurately capture the complex mechanical behaviour of PBs in numerical analysis, the proposed mathematical model defines the lateral force as a nonlinear function of shear displacement and deformation velocity. Function parameters were evaluated by fitting the general form of the mathematical model into the experimentally obtained hysteresis loops, using the least squares optimisation method. The effectiveness of the mathematical model was verified by comparing the experimental data (i.e., seismic response of a 1.20 m high single-storey and a 2.30 m high two-storey structure models under various ground motions) with the results obtained from the detailed numerical analysis, where the experimental models were idealized as multi-degree-of-freedom systems. The results obtained from this investigation explicitly confirmed that the proposed mathematical model can be successfully adopted to accurately capture complex mechanical behaviour of PBs in numerical studies.
Inne
System-identifier
144818
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