Search results for "Base isolation"

showing 3 items of 13 documents

Smart structures through nontraditional design of Tuned Mass Damper Inerter for higher control of base isolated systems

2020

Abstract This paper introduces a smart structure design through the definition of an innovative passive control strategy, referred to as New Tuned Mass Damper Inerter (New TMDI), coupled with a base isolation system (BI), to control displacements in base isolated structures under seismic excitations. The herein proposed New TMDI comprises a recently developed nontraditional Tuned Mass Damper (known as New TMD), in which a secondary mass system is connected to the base plate of the BI system by a spring and to the ground by a dashpot, and of an inerter device placed in parallel with the damper. An optimization procedure which minimizes the base displacement variance of the BI system, conside…

Optimal designOptimal designComputer science02 engineering and technology01 natural sciencesDashpot010305 fluids & plasmaslaw.inventionDamperNontraditional layout0203 mechanical engineeringlawTuned mass damper0103 physical sciencesInerterGeneral Materials ScienceCivil and Structural EngineeringTuned Mass Damperbusiness.industryMechanical EngineeringBase-isolation systemWhite noiseStructural engineeringCondensed Matter PhysicsBase (topology)020303 mechanical engineering & transportsInerterMechanics of MaterialsBase isolationSettore ICAR/08 - Scienza Delle CostruzionibusinessMechanics Research Communications
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Full scale tests of the base-isolation system for an emergency hospital

2019

The paper presents the results of some full-scale tests regarding the base-isolation system of the emergency room building of the polyclinic hospital in Palermo (Italy). This building has been recently realized and its base isolation system is characterized by double friction pendulum isolators. Static lateral pushing tests were aimed at identifying fundamental mechanical properties of the whole isolation level (e.g. friction forces and stiffness) in order to verify the agreement with the design hypotheses. Further dynamic tests provided different displacements of the isolated base followed by the instantaneous release (snap-back tests), in order to verify the effectiveness, the mechanical …

Settore ICAR/09 - Tecnica Delle Costruzionifull-scale experimental tests.Computer scienceseismic isolationsnap-back testSeismic isolationfrictionFriction pendulum bearing seismic isolation snap-back test friction in-situ testing full-scale experimental tests.Full scale testBase isolationFriction pendulum bearingin-situ testingMarine engineering
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Performance and optimal design of Tuned Mass Damper Inerter for base isolated systems

In this paper, the use of a Tuned Mass Damper Inerter to mitigate the seismic response of a base-isolated structure is studied and compared to other passive control devices. The control performance of four different types of hybrid passive control strategies aiming to reduce base displacements of isolated buildings is investigated. Specifically, the Tuned Mass Damper (TMD), the Tuned Liquid Column Damper (TLCD), and finally, the Tuned Mass Damper Inerter, each one associated to a Base Isolated structure (BI system) have been considered. This study has been carried out using as optimal design parameters of the TMDI those estimated by a proposed direct optimization procedure, considering a wh…

Tuned Mass Damper Inerter Base Isolation
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