Seismic Response of Masonry Buildings in Historical Centres Struck by the 2016 Central Italy Earthquake. Impact of Building Features on Damage Evaluation

Valluzzi, María Rosa; Sbrogiò, Luca; Saretta, Ylenia; Wenliuhan, Heisha

doi:10.1080/15583058.2021.1916852

Cited by 31 publications

(20 citation statements)

References 37 publications

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“…All masonry types appeared to have low mechanical performances, as, in M1 and M2, bond stones are missing and two leaves were evident from surveys; in M3, the percentage of voids is high, and blocks are laid with holes parallel to bed joints. However, this is a common feature of pre-standard block masonry walls [8,39].…”

Section: Structural Characterizationmentioning

confidence: 98%

“…Single houses account for 72% of the whole built stock [1], among which terraced buildings are widespread, particularly in historical settlements located in hilly or mountainous contexts [8].…”

Section: Introduction 1seismic Risk Of Residential Buildingsmentioning

confidence: 99%

“…Therefore, terraced houses are particularly vulnerable to earthquakes in their extreme units, where out-of-plane collapses can prevail, especially in the case of flexible (e.g., timber) [9] or semi-rigid (e.g., precast r.c. or steel joists with clay block or tile subflooring) [8] diaphragms. A proper evaluation of the seismic performance of this type of buildings is a staple for their rehabilitation and the identification of optimised strengthening solutions.…”

Section: Introduction 1seismic Risk Of Residential Buildingsmentioning

confidence: 99%

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Intervention Strategies for the Seismic Improvement of Masonry Buildings Based on FME Validation: The Case of a Terraced Building Struck by the 2016 Central Italy Earthquake

2021

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Residential masonry buildings represent a large stock among highly vulnerable structures in medium–high seismic hazard areas, often built without any anti-seismic provisions. Their rehabilitation and/or strengthening according to optimised intervention strategies is topical and may contribute to revaluating zones characterized by depopulation phenomena. In this paper, a terraced building struck by the 2016 Central Italy earthquake is analysed through a frame by macro element (FME) model. The building is composed of six two-storey units made of stone and clay block masonry walls and semi-rigid diaphragms. The numerical model was calibrated based on the damage pattern caused by the earthquake and then used to carry out parametric analyses on the strengthened conditions by simulating both one unit and the entire terrace. The effects of interventions applied to either vertical or horizontal components, both singularly and in combination, were analysed in terms of nonlinear static analyses, and quantified by a performance factor, according to the upgraded seismic code in Italy. Kinematic analyses also completed the assessment of the building. Results compared the capacity of interventions in attaining the targets defined for improvement at both local and overall levels.

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Section: Structural Characterizationmentioning

confidence: 98%

Section: Introduction 1seismic Risk Of Residential Buildingsmentioning

confidence: 99%

Section: Introduction 1seismic Risk Of Residential Buildingsmentioning

confidence: 99%

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Intervention Strategies for the Seismic Improvement of Masonry Buildings Based on FME Validation: The Case of a Terraced Building Struck by the 2016 Central Italy Earthquake

2021

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“…Both in-depth analyses and large-scale vulnerability assessment campaigns are often carried out on 'ancient', i.e., built earlier than 1919, individual buildings or building stocks [8][9][10]. The tools for seismic assessment depend on whether a building's seismic behaviour is governed by either out-of-plane local mechanisms or overall shear behaviour of masonry walls [11][12][13].…”

Section: Existing Masonry Buildings: Structural and Energy Issuesmentioning

confidence: 99%

Strategies for Structural and Energy Improvement in Mid-Rise Unreinforced Masonry Apartment Buildings. A Case Study in Mestre (Northeast Italy)

Sbrogiò¹,

Bevilacqua²,

Sordi³

et al. 2021

Sustainability

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Two-thirds of the Italian building stock was already built by the 1970s, largely according to gravity load design and using economical materials and poor workmanship. Currently, the structures, fixtures, and fittings of these buildings have reached the end of their service life, and they require both an assessment and an update to meet new standards and new needs. As an example of a common type, this article deals with the assessment of the present state and the proposal of an integrated structural and architectural intervention on an existing brick masonry mid-rise apartment building in the suburbs of Venice, Northern Italy. The structural analysis highlights a moderate vulnerability, despite the low seismic hazard, and the energy analysis indicates that the highest management costs are due to heating and sanitary uses. Low-impact strategies are preferred for each aspect of the required interventions. Their costs are counterbalanced by (a) the reduction to a fifth of the present management costs; (b) a 20% average increase in the economic value of the flats; and (c) a favorable tax regime at the national level. Transformed into parametric values, also useful for large scale analyses, these costs resulted in a sustainable monthly instalment from the owners, who may also benefit from the increased quality of the place where they live.

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“…The seismic preservation of the construction heritage is a crucial task for the human life protection and for social-economic-historical roles represented by historical noble and public Palaces (Valluzzi et al 2021), churches (Valente and Milani, 2018a;Valente and Milani, 2018b;Valente and Milani, 2018c), basilicas (Zucca et al, 2018;Zucca et al, 2020;Fazzi et al, 2021) and towers (Pavia et al, 2017;Kita et al, 2021). These buildings, built in areas only nowadays classified as seismic (Dal Cin and Russo 2016; Valente and Milani 2018a), must be preserved from the future earthquake's effects to avoid possible failures and collapses like the ones occurred for instance in Italy during the last century: Sicily (1908), Irpinia and Volture (1930), Belice (1968), Friuli (1976), Irpinia (1980), Carlentini (1990), Umbria and Marche (1997), Molise (2002), Abruzzo (2009), Emilia-Romagna (2012), Marche and Abruzzo (2016), and Ischia (2017).…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Geometrical Features on the Seismic Response of Historical Churches Reinforced by Different Cross Lam Roof-Solutions

Longarini

Crespi

Zucca

2022

Preprint

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Recent Italian earthquakes have shown the seismic vulnerability of many typical historical masonry churches characterized by one nave and wooden roofs. Under transverse earthquake the nave transverse response of this kind of churches can be influenced by the geometrical and material features. To increase the seismic performance, strengthening interventions aimed to pursue the global box-behavior by the realization of dissipative roof-structure represent a valid strategy especially for avoiding out-of-plane mechanisms. In this way, the roof structure must be able to represent a tool for the damped rocking of the perimeter walls. Cross-laminated timber panels (CLT) have been recently adopted as roof-diaphragm having shown valid ductile behavior in experimental tests, satisfying the conservative restoration criteria at the same time. In this paper, after a description of the numerical approach for the damped rocking mechanism for one nave configuration church, the effectiveness of different CLT based roof-diaphragms in the nave transverse response is investigated for four historical churches. The seismic responses are performed by comparative dynamic nonlinear analyses and the results are shown in terms of displacements and shear actions transferred to the façade. The influence of the geometrical features of the churches on the nave transversal response is deepened by sensitivity analyses with the aim to predict the displacements and shear variations under the same earthquake excitation.

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Seismic Response of Masonry Buildings in Historical Centres Struck by the 2016 Central Italy Earthquake. Impact of Building Features on Damage Evaluation

Cited by 31 publications

References 37 publications

Intervention Strategies for the Seismic Improvement of Masonry Buildings Based on FME Validation: The Case of a Terraced Building Struck by the 2016 Central Italy Earthquake

Intervention Strategies for the Seismic Improvement of Masonry Buildings Based on FME Validation: The Case of a Terraced Building Struck by the 2016 Central Italy Earthquake

Strategies for Structural and Energy Improvement in Mid-Rise Unreinforced Masonry Apartment Buildings. A Case Study in Mestre (Northeast Italy)

The Influence of the Geometrical Features on the Seismic Response of Historical Churches Reinforced by Different Cross Lam Roof-Solutions

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