Recent seismic events have provided evidence that damage on nonstructural components can lead to large economic losses and also to significant injuries or even fatalities. This paper focuses on earthquake-induced damage on a special class of non-structural components typically found within healthcare facilities (i.e. hospitals) which can be idealised as rigid bodies undergoing rocking motion, such as racks, closets, and special heavy medical equipment like dialysis machines. These non-structural components can rock and slide under the action of earthquakes, and eventually, they can overturn. The estimation of the likelihood of overturning of such elements and the corresponding consequences within the Performance-Based Earthquake Engineering (PBEE) framework, requires reliable fragility curves. In this contribution, a set of 274 unbiased ground motions is used for assessing the capability of several different intensity measures to reliably predict the likelihood of overturning of a given rigid block undergoing a specific ground motion, by means of a multiple-stripe analysis (MSA).
Fragility assessment of non-structural components undergoing earthquake induced rocking motion
Chiozzi, A.
Primo
;NALE, MARCOSecondo
;
2017
Abstract
Recent seismic events have provided evidence that damage on nonstructural components can lead to large economic losses and also to significant injuries or even fatalities. This paper focuses on earthquake-induced damage on a special class of non-structural components typically found within healthcare facilities (i.e. hospitals) which can be idealised as rigid bodies undergoing rocking motion, such as racks, closets, and special heavy medical equipment like dialysis machines. These non-structural components can rock and slide under the action of earthquakes, and eventually, they can overturn. The estimation of the likelihood of overturning of such elements and the corresponding consequences within the Performance-Based Earthquake Engineering (PBEE) framework, requires reliable fragility curves. In this contribution, a set of 274 unbiased ground motions is used for assessing the capability of several different intensity measures to reliably predict the likelihood of overturning of a given rigid block undergoing a specific ground motion, by means of a multiple-stripe analysis (MSA).I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
