LOSS ASSESSMENT OF ROCKING NON-STRUCTURAL COMPONENTS OF BUILDINGS

Abstract eng:
Valuable objects, or contents, are often hosted in multi-storey buildings. Such a valuable inventory may be damaged during an earthquake causing unacceptable losses (e.g. museum exhibits) or impairing the functionality of the building (e.g. damage on hospital equipment, or cloud servers). Emphasis is placed on acceleration-sensitive building contents that can be modelled as rocking rigid blocks. The dynamic response of such contents depends on the geometry of the object, the characteristics of the building and the storey that the object is located. The risk assessment of building contents is thus a complicated task, since the response of the block and the structure are coupled, while the former is acceleration-sensitive and the latter is driftsensitive. We first discuss the performance-based seismic assessment of rocking blocks proposing pertinent engineering demand parameters and intensity measures considering the dynamic response of inelastic buildings. As a second step we discuss first the risk and then the loss assessment of rocking building contents, proposing a novel performance assessment approach. Our risk assessment framework is based on nonlinear response history analysis, while a simplified approach is also discussed.

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