Seismic Behavior of some Basilica Churches after L’Aquila 2009 Earthquake

Lucibello, Giuseppe; Brandonisio, Giuseppe; Mele, Elena; Luca, A. De

doi:10.4028/www.scientific.net/amr.133-134.801

Cited by 8 publications

(1 citation statement)

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“…Comparative analyses among churches with same configuration can be useful to predict the structural failure in seismic response and to orient the retrofitting techniques [16][17][18][19][20] according to the conservative restoration criteria satisfying, as far as possible, the original material compatibility without changing the authenticity of the constructions [21,22,23]. Among these techniques the realization of dissipative wooden based roof-diaphragm represents a valid option because the out-of-plane rocking of the longitudinal walls can be reduced limiting the in-plane shear actions transferred to the head walls [24].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Seismic Behavior of Historical Churches Reinforced by Cross-Lam Roof-Structures

Longarini¹,

Crespi²,

Zucca³

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Many typical historical masonry churches, with one nave and wooden roofs, have shown high seismic vulnerability in the recent seismic events, especially under transverse earthquakes. In fact, the nave transverse response of this kind of constructions is influenced both by the materials features and the geometrical characteristics. In order to improve the seismic response, the box behavior strategy basing on dissipative roof-diaphragm, can be pursued by adopting cross laminated timber panels (CLT). In this paper, for five historical masonry churches, the effectiveness of different CLT panels solutions is investigated by performing comparative nonlinear dynamic analyses adopting equivalent finite element models. The CLT solutions differ themselves for the panels thickness (6mm and 10mm) and the number of the connections (8,16 and 32 crews in one linear meter). The results are shown in terms of dimensionless transverse displacement (drift) and shear occurred at the base of the façade. Therefore, the influence of the most important geometrical features (as slenderness of the perimeter walls, the width and the length of the churches) in the seismic response is pointed out for each church equipped by different CLT roof-diaphragm solutions.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Seismic Behavior of Historical Churches Reinforced by Cross-Lam Roof-Structures

Longarini¹,

Crespi²,

Zucca³

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

View full text Add to dashboard Cite

show abstract

Numerical approaches for cross-laminated timber roof structure optimization in seismic retrofitting of a historical masonry church

Longarini

Crespi

Scamardo

2019

Bull Earthquake Eng

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The influence of the geometrical features on the seismic response of historical churches reinforced by different cross lam roof-solutions

Longarini

Crespi

Zucca

2022

Bull Earthquake Eng

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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 to avoid 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 (CLT) panels with calibrated metal connections have been recently adopted in experimental tests as a valid solution to obtain a roof-diaphragm with ductile behavior, 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 Behavior of some Basilica Churches after L’Aquila 2009 Earthquake

Cited by 8 publications

References 1 publication

Evaluation of the Seismic Behavior of Historical Churches Reinforced by Cross-Lam Roof-Structures

Evaluation of the Seismic Behavior of Historical Churches Reinforced by Cross-Lam Roof-Structures

Numerical approaches for cross-laminated timber roof structure optimization in seismic retrofitting of a historical masonry church

The influence of the geometrical features on the seismic response of historical churches reinforced by different cross lam roof-solutions

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