Epistemic Uncertainties in Structural Modeling: A Blind Benchmark for Seismic Assessment of Slender Masonry Towers

Bartoli, Gianni; Betti, Michele; Biagini, Paolo; Borghini, Andrea; Ciavattone, Alberto; Girardi, Maria; Lancioni, Giovanni; Marra, Antonino Maria; Ortolani, Barbara; Pintucchi, Barbara; Salvatori, Luca

doi:10.1061/(asce)cf.1943-5509.0001049

Cited by 36 publications

(19 citation statements)

References 49 publications

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“…This aspect was investigated in detail in several literature works, with reference to structural typologies different from masonry buildings whereas, to the authors' knowledge, only very few studies analyzed the effect of modelling uncertainties on the response of masonry structures (e.g. Parisi and Augenti, 2012, Bracchi et al 2015, Bosiljkov et al 2015, Bartoli et al 2017).…”

Section: Identification Of Structural Modeling Uncertaintiesmentioning

confidence: 99%

Masonry Italian Code-Conforming Buildings. Part 2: Nonlinear Modelling and Time-History Analysis

Cattari

Camilletti

Lagomarsino

et al. 2018

Journal of Earthquake Engineering

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The URM buildings designed to be conforming with the Italian building code, as illustrated in the companion paper by Manzini et al. (2018), were analyzed by performing time-history analyses on models realized using an equivalent frame approach and by adopting two different constitutive laws. Both the effect of record-to-record variability and of epistemic and aleatory uncertainties in modelling were explored. The achieved results constitute the basis for the evaluation of the risk level implicit in Italian code-conforming buildings (Iervolino et al. 2018). Two main performance conditions are considered, namely usability-preventing damage and global collapse limit states.

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Section: Identification Of Structural Modeling Uncertaintiesmentioning

confidence: 99%

Masonry Italian Code-Conforming Buildings. Part 2: Nonlinear Modelling and Time-History Analysis

Cattari

Camilletti

Lagomarsino

et al. 2018

Journal of Earthquake Engineering

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“…e numerical modelling was carried out by using the FEM software MIDAS FEA [46] following a smeared-crack macromodelling approach in which the wall is treated as an homogeneous continuum medium. Despite the fact that cob walls could exhibit an anisotropic behaviour, an isotropic behaviour is here assumed due to the good consistency between numerical and experimental results, as it is usually done for other materials such as rammed earth [23] or masonry [47][48][49] that could exhibit anisotropic behaviour. In particular, the potentiality of the smeared-crack macromodelling approach to accurately simulate the mechanical behaviour of a rammed earth wall and to detect potential zones of failure by delamination has been recently shown in [23].…”

Section: Numerical Modellingmentioning

confidence: 99%

Experimental and FEM Investigation of Cob Walls under Compression

Quagliarini

Maracchini

2018

Advances in Civil Engineering

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Earth has been used as construction material since prehistoric times, and it is still utilized nowadays in both developed and developing countries. Heritage conservation purposes and its intrinsic environmental benefits have led researchers to investigate the mechanical behaviour of this material. However, while a lot of works concern with rammed earth, CEB, and adobe techniques, very few studies are directed towards cob, which is an alternative to the more diffused rammed earth and adobe in specific geographic conditions. Due to this lack, this paper presents an experimental program aimed at assessing the failure mode and the main mechanical properties of cob earth walls (compressive strength, Young’s modulus, and Poisson’s ratio) through monotonic axial compression tests. Results show that, if compared with CEB, adobe, and rammed earth, cob has the lowest compressive strength, the lowest modulus of elasticity, and Poisson’s ratio. Differences are also found by comparing results with those obtained for other cob techniques, underlining both the high regional variability of cob and the need of performing more research on this topic. A strong dependence of material properties on loading rate and water content seems to exist too. Finally, the ability of a common analytical method used for masonry structures (an FEM macromodelling with a total strain rotating crack model) to represent the mechanical behaviour of cob walls is showed.

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“…The Finite Element (FE) technique is today amongst the most diffused methods used to assess the structural behaviour in the general Computational Mechanics context and especially in the field of Civil Engineering Applications (Pepper et al, 2014). Particularly relevant, in recent years, for academic and research application projects is the open source salome_meca environment: a platform which includes the FE solver code_aster, developed since the late '80s by EDF (Elecricité de France) and diffused under LGPL license since the beginning of the 2000s (Pieraccini et al, 2017 andBartoli et al, 2017). Two main inputs are needed to build reliably and consistently a FE Model: i) the mesh and ii) the additional information to be implemented within the finite elements (properties, loads, boundary conditions etc.).…”

Section: Fe Modellingmentioning

confidence: 99%

Bim for Museums: An Integrated Approach From the Building to the Collections

Tucci¹,

Betti²,

Conti³

et al. 2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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The paper discusses the first outcomes of an ongoing research activity aimed at developing a general BIM-based methodology for the organization and the management of the information needed for maintenance and safety assessment of museums. The Galleria dell'Accademia di Firenze (Florence, Italy) which has a very complex spatial organisation as a result of transformations occurred over the centuries, has been considered as an illustrative application of the proposed methodology. One of the specific elements which characterize museums, compared to other buildings, is the issue of the relationship between the building itself and the artworks there contained. A specific element of the research is consequently the need not to limit the attention to only the building (i.e. the envelope), but to consider within the BIM also the presence of the art collections. Starting from a recent laser scanner survey, a BIM has been created and a semi-automatic workflow has been investigated to obtain a FE (Finite Element) model to be employed for static and dynamic structural analysis purposes. Currently, since the scans inevitably included the artworks, a test is underway to add in the BIM of the museum also its collections (M-BIM). Each element can be inserted as a BIM object including its geometric representation and physical data (dimensions, materials, weight…) and linked to different museum inventory and conservation databases for the museum management.

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Epistemic Uncertainties in Structural Modeling: A Blind Benchmark for Seismic Assessment of Slender Masonry Towers

Cited by 36 publications

References 49 publications

Masonry Italian Code-Conforming Buildings. Part 2: Nonlinear Modelling and Time-History Analysis

Masonry Italian Code-Conforming Buildings. Part 2: Nonlinear Modelling and Time-History Analysis

Experimental and FEM Investigation of Cob Walls under Compression

Bim for Museums: An Integrated Approach From the Building to the Collections

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