DEM modeling and experimental analysis of the static behavior of a dry-joints masonry cross vaults

Foti, Dora; Vacca, Vitantonio; Facchini, I.

doi:10.1016/j.conbuildmat.2018.02.202

Cited by 71 publications

(37 citation statements)

References 12 publications

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“…In turn, structural resistance of dry-joint masonry buildings with different morphologies present differences under similar earthquake conditions. Several pieces of research have been conducted to examine one or two of the characteristics affecting structural resistance of dry-joint masonry buildings (de Felice, 2011;Foti et al, 2018;Giuffrè, 1996;Jimenez, 2011;Vaculik et al, 2004). The variation in the organisation of blocks is evaluated in the majority of the studies.…”

Section: Introductionmentioning

confidence: 99%

“…The variation in the organisation of blocks is evaluated in the majority of the studies. For example, de Felice (2011) studied stone size and number of headers; Foti et al (2018) studied masonry pattern, and Giuffrè (1996) studied the usage of header stones between leaves. The organisation of blocks was also examined in relation to material characteristics (Giuffre et al, 1994;Godio et al, 2018;Vaculik, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Vulnerability of Ancient Dry-joint Masonry Towers

Gençer

Hamamcıoğlu-Turan

Duran

et al. 2020

Period. Polytech. Arch.

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Since ancient times, different techniques have been favoured to provide the integrity of masonry buildings at risk from earthquakes. Earthquake consciousness and determination of related effective techniques have always been a challenging subject. In this study, morphologic characteristics affecting structural resistance of dry-joint masonry towers, and their impact on each other are examined with the help of the statistical analysis. The effectiveness of each characteristic is discussed in relation to the earthquake risk level of the regions to decipher awareness of precautions necessary for structural resistance of dry-joint masonry under earthquake risk in ancient periods.The methodology includes gathering morphologic data with the conventional site survey techniques of architectural restoration; visual analysis of the dataset; design of hypothetical towers by combining possible characteristics of real towers; quasi-static tilt analysis of hypothetical towers with MsPhysics 1.0.3 software; regression analysis of the collapse limits for different morphologic configurations with EViews 4 software, and the proposition of a vulnerability framework and application of the framework to case studies.The parameters affecting structural resistance are listed in the order of high to low impact as a staggering ratio, stone depth, ratio between block length and height, proportional relationship between height and length, opening area, number and position and the distribution of header stones. The application of the framework to case studies indicated consciousness awareness of the risk and the taking of precautions against lateral loading of dry-joint masonry in ancient periods.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vulnerability of Ancient Dry-joint Masonry Towers

Gençer

Hamamcıoğlu-Turan

Duran

et al. 2020

Period. Polytech. Arch.

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“…Finally, block-based approaches consider the structure as an assembly of separate blocks which can interact through specific laws. This approach represents the most accurate analysis tool [15,16,17,18,19,20,21,22], even if the description of a historic vault block-by-block is still challenging and computationally demanding. In this framework, software tools based on limit analysis of rigid blocks have been lately developed for the 2D analysis of masonry bridges (LimitState: RING software originally developed in [23]), and for the limit analysis of masonry structures modelled as assemblages of 3D rigid blocks subjected to live loads and settlements (LiABlock_3D [24]).…”

Section: Introductionmentioning

confidence: 99%

Historic Barrel Vaults Undergoing Differential Settlements

D’Altri

Castellazzi

Sarhosis

et al. 2019

International Journal of Architectural Heritage

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A principal reason of damage in historic masonry vaults consists in relative displacements of the vaults' abutments. Excluding the case of seismic-induced damage, cracks are often produced by differential settlements generated by the lateral wall instability or soil degradation (e.g. due to stress concentrations, non-uniform soil stratigraphy, flooding phenomena etc.). When dealing with historic vaults, the effects of long-term deformation processes cannot often be linked directly to causes, which may also be unknown. In this paper, the effects of differential settlements on historic masonry barrel vaults are investigated. An efficient 3D contact-based model was developed to reproduce experiments on a scaled pointed barrel vault (representative of a typology of late-medieval barrel vaults in Scotland) under non-uniform differential settlement. Firstly, the numerical model is used to simulate the experimental campaign, achieving good agreement in terms of crack pattern (longitudinal shear) and transverse-longitudinal deformation profiles. Then, further analyses are carried out to gain insight on the effects of several plausible uniform and non-uniform settlement patterns on representative historic barrel vaults. Various settlement configurations were analysed and complex failure patterns observed. This study could help analysts in understanding the nature of ongoing deformation process in historic masonry vaults and engineers in the design of strengthening strategies.

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“…Only few FE softwares were specifically developed for analysing masonry curved structures [11][12][13]. Furthermode, the use of Discrete Element methods is proving its efficacy because of their capacity to model the discrete nature of masonry and the possibility of considering large displacements [14][15][16]. Few researchers analysed the seismic behavior of vaults by simulating seismic actions as differential displacements applied to supports using both numerical [17] and experimental approaches [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Seismic Assessment of Masonry Cross Vaults Through Numerical Nonlinear Static and Dynamic Analysis

Bianchini¹,

Mendes²,

Lourenço³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Masonry vaults represent a pleasant typology of structural horizontal element in traditional architecture and historical buildings, widespread on a large scale along all the European countries, even those characterized by a high level of seismicity. However, they are some of the most vulnerable structural elements particularly under dynamic actions. Therefore, the assessment of their structural safety and the determination of their stress field is a very important task for preservation of historic buildings. Vaults have been studied from an architectural and structural point of view as sequences of arches, and thus extending the use of bidimensional tools of analysis. This assumption can be reliable for the analysis of barrel vaults, but it is not always the most appropriate solution for investigating more complex vaulted systems with a not negligible three-dimensional behavior. The paper presents on the analysis of a particular groin vault, typically found in monumental buildings which will be successively tested during an experimental dynamic campaign on the shake table. Among all the failure mechanisms of this type of vault, the shear failure is one of the most frequently recorded during post-earthquake surveys. The activation of the shear response is caused by asymmetric boundary conditions and difference in stiffness between two sides of the vault, as it occurs in groin vaults covering churches aisles characterized by the presence of a perimeter wall on one side and two columns on the other side. The main aim of the paper is to investigate the seismic response of a brick groin vault simulating the boundary conditions and loadings of an aisle in a three naves church prototype. Static and dynamic nonlinear numerical analyses were performed using a finite element model. The boundary conditions simulate from one side the presence of a perimeter wall and from the other side the two columns between the main and the lateral nave. The role of the infill and of the amplification of the seismic input are investigated. The results are analyzed in terms of ultimate displacement capacity, crack pattern and damage mechanisms.

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DEM modeling and experimental analysis of the static behavior of a dry-joints masonry cross vaults

Cited by 71 publications

References 12 publications

Vulnerability of Ancient Dry-joint Masonry Towers

Vulnerability of Ancient Dry-joint Masonry Towers

Historic Barrel Vaults Undergoing Differential Settlements

Seismic Assessment of Masonry Cross Vaults Through Numerical Nonlinear Static and Dynamic Analysis

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