The NOSA-ITACA code for the safety assessment of ancient constructions: A case study in Livorno

Girardi, Maria; Padovani, Cristina; Pellegrini, Daniele

doi:10.1016/j.advengsoft.2015.04.002

Cited by 20 publications

(13 citation statements)

References 33 publications

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“…In addition, FE commercial software combined with either elastic-plastic or damaging models, developed to study steel or concrete structures are often used in the technical literature to model masonry vaults [15], [16], [17]. Specific software have been also developed to account for the mechanical behaviour of the masonry curved structures, for instance DIANA by TNO Delft [18] and NOSA ITACA by ISTI-CNR Pisa [19], [20]. However, the aim of the paper is to explore the benefits of methods directly accessible by practitioners, embedded already in all-purpose commercial software.…”

Section: Several Advanced Computational Techniques Have Been Developementioning

confidence: 99%

The effects of in-plane shear displacements at the springings of Gothic cross vaults

Carfagnini

Baraccani

Silvestri

et al. 2018

Construction and Building Materials

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Extensive damages recorded during recent strong Italian earthquakes highlighted how vulnerable masonry vaults are and what deformations they receive from the rest of the building, which can be simulated as two phenomena: (i) a dynamic response of the vault itself, above the lateral walls and piers, and (ii) a pseudo-static response of the vault to imposed displacements at its springings, triggered by significant movement from the lateral walls and piers. This paper aims at improving knowledge in this field by simulating the first of these phenomena as static shear deformation at the springings. An experimental programme was set on a model of a typical quadripartite square Gothic cross vault (from the aisle of the Holyrood Abbey in Edinburgh). The test on a 1:4 scaled model had the shear displacement applied by moving two abutments in the longitudinal sense until failure, recording the crack pattern evolution and displacements of the ridges, identifying the diagonal cracks normal to the shear displacement that cause the damage and collapse in the vault. The crack pattern was validated with linear and non-linear numerical models, confirming particular observations like the uplift of the ridges and concentration of damage along the notional shear diagonal. Non-linear models are capable of capturing not only the crack pattern evolution, but also the vertical and horizontal displacements of the structure.

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Section: Several Advanced Computational Techniques Have Been Developementioning

confidence: 99%

The effects of in-plane shear displacements at the springings of Gothic cross vaults

Carfagnini

Baraccani

Silvestri

et al. 2018

Construction and Building Materials

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“…The second installation (see Figure 2b) is in a waterway below a large square, namely Voltone, with sensor nodes very close to the water below and to passing boats. The streets all around the square above the waterway are part of the Leghorn's arterial roads, thus exposing the waterway to varying loads [31]. The installation in the waterway has required the presence of specialized personnel, able to climb the inside walls for installing small devices in precise locations.…”

Section: The Proposed Monitoring System and The Three Real Case mentioning

confidence: 99%

Monitoring Ancient Buildings: Real Deployment of an IoT System Enhanced by UAVs and Virtual Reality

et al. 2020

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The historical buildings of a nation are the tangible signs of its history and culture. Their preservation deserves considerable attention, being of primary importance from a historical, cultural, and economic point of view. Having a scalable and reliable monitoring system plays an important role in the Structural Health Monitoring (SHM): therefore, this paper proposes an Internet of Things (IoT) architecture for a remote monitoring system that is able to integrate, through the Virtual Reality (VR) paradigm, the environmental and mechanical data acquired by a wireless sensor network set on three ancient buildings with the images and context information acquired by an Unmanned Aerial Vehicle (UAV). Moreover, the information provided by the UAV allows to promptly inspect the critical structural damage, such as the patterns of cracks in the structural components of the building being monitored. Our approach opens new scenarios to support SHM activities, because an operator can interact with real-time data retrieved from a Wireless Sensor Network (WSN) by means of the VR environment. INDEX TERMS Internet of Things, structural health monitoring, virtual reality, unmanned aerial vehicles, condition monitoring.

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“…For these reasons, the dynamic behavior of masonry structures should be evaluated considering the presence of existing cracks. To this end, the FE NOSA-ITACA code [33], [34], developed by the Mechanics of Materials and Structures Laboratory of ISTI-CNR, adopts a numerical method based on linear perturbation and modal analysis, which takes into account the influence of existing damage on the dynamic properties of masonry buildings. The numerical method is widely described in [35,36].…”

Section: Constitutive Equations and Modal Analysis Of Masonry Structuresmentioning

confidence: 99%

Dynamic characterization of progressively damaged segmental masonry arches with one settled support: experimental and numerical analyses

Masciotta

Pellegrini

Brigante

et al. 2019

Frattura Ed Integrità Strutturale

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This paper aims to explore the dynamic behavior of a segmental masonry arch subjected to increasing horizontal displacements of one support. To this end, output-only dynamic identification techniques are first used to track the evolution of the dynamic features of the system under progressive damage scenarios and evaluate their sensitivity to settlementinduced cracks. Considerations on the structural response of the segmental arch up to failure are also included. Then, a numerical procedure coupling linear perturbation and modal analysis is applied to simulate the dynamic behavior of the arch over consecutive scenarios, taking into account the influence of the damage on the structure's dynamic properties in an automatic way. The combination of experimental and numerical analyses allows to fully investigate the dynamics of the cracked masonry arch and to shed light on

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The NOSA-ITACA code for the safety assessment of ancient constructions: A case study in Livorno

Cited by 20 publications

References 33 publications

The effects of in-plane shear displacements at the springings of Gothic cross vaults

The effects of in-plane shear displacements at the springings of Gothic cross vaults

Monitoring Ancient Buildings: Real Deployment of an IoT System Enhanced by UAVs and Virtual Reality

Dynamic characterization of progressively damaged segmental masonry arches with one settled support: experimental and numerical analyses

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