Influence of variability of material mechanical properties on seismic performance of steel and steel–concrete composite structures
Date
2017Language
en
Keyword
Abstract
Modern standards for constructions in seismic zones allow the construction of buildings able to dissipate the energy of the seismic input through an appropriate location of cyclic plastic deformations involving the largest possible number of structural elements, forming thus a global collapse mechanisms without failure and instability phenomena both at local and global level. The key instrument for this purpose is the capacity design approach, which requires an appropriate selection of the design forces and an accurate definition of structural details within the plastic hinges zones, prescribing at the same time the oversizing of non-dissipative elements that shall remain in the elastic field during the earthquake. However, the localization of plastic hinges and the development of the global collapse mechanism is strongly influenced by the mechanical properties of materials, which are characterized by an inherent randomness. This variability can alter the final structural behaviour not matching the expected performance. In the present paper, the influence of the variability of material mechanical properties on the structural behaviour of steel and steel/concrete composite buildings is analyzed, evaluating the efficiency of the capacity design approach as proposed by Eurocode 8 and the possibility of introducing an upper limitation to the nominal yielding strength adopted in the design. © 2016, Springer Science+Business Media Dordrecht.
Collections
Related items
Showing items related by title, author, creator and subject.
-
Design and assessment of steel and steel-concrete composite structures: Efficacy of EN1998 design procedure
Braconi, A.; Caprili, S.; Degee, H.; Guendel, M.; Hjaij, M.; Hoffmeister, B.; Karmanos, S.; Rinaldi, V.; Salvatore, W. (2013)Design codes for seismic constructions allow the realization of structures able to dissipate energy through cyclic plastic deformations localized in specific zones, selected to involve the largest number of structural ... -
A fast Bayesian inference scheme for identification of local structural properties of layered composites based on wave and finite element-assisted metamodeling strategy and ultrasound measurements
Yan W.-J., Chronopoulos D., Cantero-Chinchilla S., Yuen K.-V., Papadimitriou C. (2020)Reliable verification and evaluation of the mechanical properties of a layered composite ensemble are critical for industrially relevant applications, however it still remains an open engineering challenge. In this study, ... -
Thermo-mechanical analysis of composite slabs under fire conditions
Pantousa, D.; Mistakidis, E. (2010)The paper studies the behavior of composite slabs with corrugated steel sheeting in elevated temperatures. Two structural systems are considered: a simply supported composite slab and a continuous composite slab that ...