Performance-Based Engineering (PBE) is a general methodology that states the performances required for a structure, and provides criteria and methods for verifying the achievement of these performances and for improving the structural design. PBE has already been vastly developed for seismic engineering [1]. At the present time, the research in hurricane engineering appears to be sufficiently mature to develop a sound Performance-Based Hurricane Engineering (PBHE) methodology for risk assessment and design of structures, following the results already obtained in other engineering fields [2]. Post-hurricane surveys indicate that the major economic losses to buildings stem mainly from the breach of the building envelope. Once the envelope is breached, the building and its contents are increasingly likely to suffer severe damage from water or wind effect [3]. A typical example for this type of scenario is that of mid-rise engineered buildings. These buildings generally suffer little damage to the load bearing structural system when the integrity of the building envelope is preserved. However, when the building envelope is breached, the same buildings can suffer extensive cladding and interior damage, and even structural damage due to pressurization of the interior of the building [4]. Guidelines for performance-based engineering of structures subjected to extreme winds and hurricanes are not yet available. The objective of this paper is to propose a list of performance expectations and damage descriptors that can be used for both the performance-based assessment and design of mid-rise steel building. In this paper, a recently proposed multi hazard PBHE framework [5] is applied to a typical mid-rise steel building with glass cladding located in an urban area. The mean annual frequency of exceedance is calculated for structural response parameters that are needed in the definition of the performance expectations and damage descriptors proposed in this paper.
Performance-Based Hurricane Engineering Methodology for Mid-rise Buildings / V. U., Unnikrishnan; M., Barbato; Ciampoli, Marcello. - ELETTRONICO. - (2012). (Intervento presentato al convegno 10th World Conference on Computational Mechanics tenutosi a Sao Paulo, Brasil nel 8-13 July 2012).
Performance-Based Hurricane Engineering Methodology for Mid-rise Buildings
CIAMPOLI, Marcello
2012
Abstract
Performance-Based Engineering (PBE) is a general methodology that states the performances required for a structure, and provides criteria and methods for verifying the achievement of these performances and for improving the structural design. PBE has already been vastly developed for seismic engineering [1]. At the present time, the research in hurricane engineering appears to be sufficiently mature to develop a sound Performance-Based Hurricane Engineering (PBHE) methodology for risk assessment and design of structures, following the results already obtained in other engineering fields [2]. Post-hurricane surveys indicate that the major economic losses to buildings stem mainly from the breach of the building envelope. Once the envelope is breached, the building and its contents are increasingly likely to suffer severe damage from water or wind effect [3]. A typical example for this type of scenario is that of mid-rise engineered buildings. These buildings generally suffer little damage to the load bearing structural system when the integrity of the building envelope is preserved. However, when the building envelope is breached, the same buildings can suffer extensive cladding and interior damage, and even structural damage due to pressurization of the interior of the building [4]. Guidelines for performance-based engineering of structures subjected to extreme winds and hurricanes are not yet available. The objective of this paper is to propose a list of performance expectations and damage descriptors that can be used for both the performance-based assessment and design of mid-rise steel building. In this paper, a recently proposed multi hazard PBHE framework [5] is applied to a typical mid-rise steel building with glass cladding located in an urban area. The mean annual frequency of exceedance is calculated for structural response parameters that are needed in the definition of the performance expectations and damage descriptors proposed in this paper.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
