Search results for "friction pendulum bearing"

showing 3 items of 3 documents

Strategies of Identification of a Base-Isolated Hospital Building by Coupled Quasi-Static and Snap-Back Tests

2020

In this paper, the description of a series of quasi-static pushing tests and dynamic snap-back tests is proposed, involving the base-isolated emergency building of the Palermo university hospital. The base isolation system is characterized by a set of double-curved friction pendulum isolators placed on the top of the columns of the underground level, characteristics that cannot be found in the experimental studies available in the literature. The aim of the work was to investigate the static and dynamic properties of the building in question and comparing the in-situ results with the characteristics assigned during the design process and to assess the level of agreement. Static lateral push…

021110 strategic defence & security studiesComputer sciencebusiness.industry0211 other engineering and technologies020101 civil engineering02 engineering and technologyBuilding and ConstructionStructural engineeringGeotechnical Engineering and Engineering GeologyUniversity hospitalBase (topology)0201 civil engineeringSettore ICAR/09 - Tecnica Delle CostruzioniSettore ING-IND/31 - ElettrotecnicaSnap backIdentification (information)friction friction pendulum bearing full-scale experimental tests in-situ testing seismic isolation snap-back testSeismic isolationbusinessQuasistatic processCivil and Structural EngineeringJournal of Earthquake Engineering
researchProduct

Hardening structures isolated by double sliding devices: Seismic reliability-based design approach

2019

This study deals with seismic reliability-based design (SRBD) relationships in terms of behavior factors and displacement demands for hardening structures equipped with double friction pendu-lum system (DFPS) bearings. An equivalent 3dof system having a hardening post-yield slope is adopted to describe the superstructure behavior, whereas velocity-dependent laws are assumed to model the responses of the two surfaces of the DFPS. The yielding characteristics of the super-structures are defined for increasing behavior factors in compliance with the seismic hazard of L’Aquila site (Italy) and with NTC18 assuming a lifetime of 50 years. Considering several natural seismic records and building p…

Settore ICAR/09 - Tecnica Delle CostruzioniBehavior factor ductility demand friction pendulum bearing post-yield hardening stiffness seismic isolation seismic reliability.seismic isolationseismic reliability.Behavior factorductility demandpost-yield hardening stiffnessfriction pendulum bearingBehavior factor ductility demand friction pendulum bearing post-yield hardening stiffness seismic isolation seismic reliability
researchProduct

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
researchProduct