Fragility Curves for RC Structure under Blast Load Considering the Influence of Seismic Demand

Stochino, Flavio; Attoli, Alessandro; Concu, Giovanna

doi:10.3390/app10020445

Cited by 16 publications

(8 citation statements)

References 42 publications

(42 reference statements)

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“…Moreover, typical uncertainties embodied in structural engineering analyses are often difficult to model, such as random (aleatory), chance and likelihood for which a number of modelling theories have been proposed in [41]. Recently, wide earthquake damage data are commonly used to generate fragility curves in case of materials, constructional systems and structural details of common use especially in the existing building heritage (such as reinforced concrete frames [42][43][44]).…”

Section: Fragility Assessmentmentioning

confidence: 99%

Analytical Fragility Curves for Seismic Design of Glass Systems Based on Cloud Analysis

Mattei

Bedon

2021

Symmetry

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Given the growing spread of glass as a construction material, the knowledge of structural response must be ensured, especially under dynamic accidental loads. In this regard, an increasingly popular method to probabilistically characterize the seismic response of a given structure is based on the use of “fragility” or “seismic vulnerability” curves. Most existing applications, however, typically refer to construction and structural members composed of traditional building materials. The present study extends and adapts such a calculation method to innovative structural glass systems, which are characterized by specific material properties and expected damage mechanisms, restraint details, and dynamic features. Suitable Engineering Demand Parameters (EDPs) for seismic design are thus required. In this paper, a major advantage is represented by the use of Cloud Analysis in the Cornell’s reliability method, for the seismic assessment of two different case-study glass systems. Cloud Analysis is known to represent a simple and immediate tool to analytically investigate a given (glass) structure by taking into account variations in seismic motions and uncertainties of structural parameters. Such a method is exploited by means of detailed three-dimensional (3D) Finite Element (FE) numerical models and non-linear dynamic analyses (ABAQUS/Standard). Critical issues and typical failure mechanisms for in-plane seismically loaded glass systems are discussed. The validity of reference EDPs are addressed for the examined solutions. Based on a broad seismic investigation (60 records in total), fragility curves are developed from parametric results, so as to support a multi-hazard performance-based design (PBD) procedure.

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Section: Fragility Assessmentmentioning

confidence: 99%

Analytical Fragility Curves for Seismic Design of Glass Systems Based on Cloud Analysis

Mattei

Bedon

2021

Symmetry

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“…Furthermore, in the case of seismicresistant structures, elements' cross sections are designed to have ductility and a dominant flexural mechanism at failure, something that is crucial for the development of some local deformation capacity that allows the global robustness. Therefore, the criteria of seismic engineering have a beneficial impact regarding the robustness of buildings [11]. Additional specific structural behaviors, like the membrane or catenary effects, lead to an overstrength which can be well exploited in case of damage, such as the removal of a key element like a column [12,13].…”

Section: Global Robustness Of Rc Frames Under Column Removal Scenario 21 Structural Behavior Aspectsmentioning

confidence: 99%

Robustness of Reinforced Concrete Frames against Blast-Induced Progressive Collapse

Francioli

Petrini

Olmati³

et al. 2021

Vibration

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A quantitative procedure for the robustness and progressive collapse assessment of reinforced concrete (RC) frames under blast load scenarios is presented. This procedure is supported by multilevel numerical models, including nonlinear numerical analyses of the structural response of both local (i.e., response of the single structural element to the blast load) and global levels (i.e., response of the structural system to the blast-induced damage). Furthermore, the procedure is applied to a 2D RC frame structure. The novelty of the proposed procedure is that the global robustness is evaluated by the so-called “damage-presumption approach” where the considered damages are defined both in typology and extension depending on the blast scenario occurring at the local level. The dedicated local response analysis of a specified blast scenario leads to the proper definition of the so-called “blast-scenario dependent robustness curves”.

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“…In conclusion, it is known that both man-made attacks and accidents can yield to explosions and fire loads that could push the constructional materials, and thus the structures, to their capacity limits. Blast loads analyses, in this regard, are reported in [18][19][20], while fire effects on a tunnel structure are analyzed in [21].…”

Section: Contentsmentioning

confidence: 99%

Special Issue on “Buildings and Structures under Extreme Loads”

2020

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Fragility Curves for RC Structure under Blast Load Considering the Influence of Seismic Demand

Cited by 16 publications

References 42 publications

Analytical Fragility Curves for Seismic Design of Glass Systems Based on Cloud Analysis

Analytical Fragility Curves for Seismic Design of Glass Systems Based on Cloud Analysis

Robustness of Reinforced Concrete Frames against Blast-Induced Progressive Collapse

Special Issue on “Buildings and Structures under Extreme Loads”

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