Field observations and failure analysis of the Basilica S. Maria di Collemaggio after the 2009 L’Aquila earthquake

Gattulli, Vincenzo; Antonacci, Elena; Vestroni, Fabrizio

doi:10.1016/j.engfailanal.2013.01.020

Cited by 67 publications

(27 citation statements)

References 17 publications

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“…15.3. Low compatibility in terms of mass and stiffness of concrete ring beams, often inadequately connected to the existing masonry, concurred to cause tragic collapses, as in the case of the Collemaggio basilica in L'Aquila (Gattulli et al 2013). Numerous are the failures observed when traditional timber roof and floor structures are substituted with concrete ring beams and slabs in an attempt to deliver diaphragm action.…”

Section: Dissipating Energy As An Alternative To Strengtheningmentioning

confidence: 99%

“…The aim of the intervention was to limit transmission of large forces from the nave walls to the façade and the transept due to the truss structure inserted at the roof level to ensure coupling in the vibration of the longitudinal walls. The appropriateness of this intervention, among the few being tested by a real event, was reassessed after the collapse of the central crossing (Gattulli et al 2013). A rocking-damper system, called DIS-CAM (DISsipative Active Confinement of Masonry) was developed and installed within the framework of the project of restoration of the drum of the dome of S. Nicolò church in Catania, although the collapse in this case was due to long term decay (Di Croce et al 2010).…”

Section: Dissipating Energy As An Alternative To Strengtheningmentioning

confidence: 99%

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Conservation Principles and Performance Based Strengthening of Heritage Buildings in Post-event Reconstruction

D’Ayala

2014

Geotechnical, Geological and Earthquake Engineering

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Recommendations for repairing and strengthening historic buildings after an earthquake and before the next in modern times go back to the contribution to the ICOMOS General Assembly of 1987 by Sir Bernard Fielden "Between two Earthquakes" (Fielden 1987). In that circumstance two important points were made: the first is that failure and damage should be used to understand performance and behaviour, so as to avoid measures that do not work. The second is that the engineer work should be integrated into the architecture historical methodology. Almost 30 years later this contribution investigate to which extent these two recommendations have been fulfilled, whether there is a common understanding between the conservation and the seismic engineering community and whether lessons from past failures are informing new strengthening strategies. IntroductionThe global seismic response of historic masonry buildings is highly influenced by the integrity of the connections among vertical and horizontal structural elements, to ensure the so-called box behaviour. Such behaviour, providing the transfer of inertial and dynamic actions from elements working in flexure out-of-plane to elements working in in-plane shear, leads to a global response best suited to the strength capacity of the constitutive materials, and hence enhanced performance and lower damage levels. While, many properly designed buildings of the past demonstrated such behavior when exposed to seismic action and successfully survived ground shaking (D'Ayala 2011;Tavares et al. 2014), too often, due to

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Section: Dissipating Energy As An Alternative To Strengtheningmentioning

confidence: 99%

Section: Dissipating Energy As An Alternative To Strengtheningmentioning

confidence: 99%

Conservation Principles and Performance Based Strengthening of Heritage Buildings in Post-event Reconstruction

D’Ayala

2014

Geotechnical, Geological and Earthquake Engineering

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“…Moreover, the recent Italian earthquakes have further highlighted the relevance of this issue. The analysis of the earthquake's effects on masonry structures [1,2] has led to define a collapse hierarchy, considering three main mechanisms: crumbling, out-and in-plane failure. When the masonry crumbling is prevented, it has been widely assessed that the out-of-plane collapse mechanisms are the most frequent.…”

Section: Introductionmentioning

confidence: 99%

Out-of-Plane Dynamic Response of a Tuff Masonry Wall: Shaking Table Testing and Numerical Simulation

Addessi¹,

Cappelli²,

Gatta³

et al. 2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract. The out-of-plane dynamic response of a masonry element is investigated, both experimentally and numerically. The results of shaking table tests on a tuff masonry wall, subjected to harmonic acceleration histories, are presented. An isotropic nonlocal damage-plastic model, accounting for the masonry strength-stiffness degrading and hysteresis mechanisms, is introduced in a finite element procedure to numerically describe the masonry structural response. A simplified scheme is analysed, where the wall is completely restrained at the base and free at the top. The measured top displacement history is compared with that numerically evaluated, obtaining a satisfactory agreement. Moreover, the effects of the onset and evolution of the degrading mechanisms in the masonry wall are highlighted.

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“…In particular, a large effort was devoted to the analysis of masonry monumental structures, such as churches [5][6][7][8][9]. However, more rarely, studies were devoted to historical palaces [10][11][12][13][14][15][16][17], which are characterized by a wider spectrum of different typologies and peculiarities, and the large part of these studies is based on the observation on the field of the effects of the earthquakes without a complete numerical counterpart.…”

Section: Introductionmentioning

confidence: 99%

Multi-Directional Seismic Assessment of Historical Masonry Buildings by Means of Macro-Element Modelling: Application to a Building Damaged during the L’Aquila Earthquake (Italy)

et al. 2017

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Abstract:The experience of the recent earthquakes in Italy caused a shocking impact in terms of loss of human life and damage in buildings. In particular, when it comes to ancient constructions, their cultural and historical value overlaps with the economic and social one. Among the historical structures, churches have been the object of several studies which identified the main characteristics of the seismic response and the most probable collapse mechanisms. More rarely, academic studies have been devoted to ancient palaces, since they often exhibit irregular and complicated arrangement of the resisting elements, which makes their response very difficult to predict. In this paper, a palace located in L'Aquila, severely damaged by the seismic event of 2009 is the object of an accurate study. A historical reconstruction of the past strengthening interventions as well as a detailed geometric relief is performed to implement detailed numerical models of the structure. Both global and local models are considered and static nonlinear analyses are performed considering the influence of the input direction on the seismic vulnerability of the building. The damage pattern predicted by the numerical models is compared with that observed after the earthquake. The seismic vulnerability assessments are performed in terms of ultimate peak ground acceleration (PGA) using capacity curves and the Italian code spectrum. The results are compared in terms of ultimate ductility demand evaluated performing nonlinear dynamic analyses considering the actual registered seismic input of L'Aquila earthquake.

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Field observations and failure analysis of the Basilica S. Maria di Collemaggio after the 2009 L’Aquila earthquake

Cited by 67 publications

References 17 publications

Conservation Principles and Performance Based Strengthening of Heritage Buildings in Post-event Reconstruction

Conservation Principles and Performance Based Strengthening of Heritage Buildings in Post-event Reconstruction

Out-of-Plane Dynamic Response of a Tuff Masonry Wall: Shaking Table Testing and Numerical Simulation

Multi-Directional Seismic Assessment of Historical Masonry Buildings by Means of Macro-Element Modelling: Application to a Building Damaged during the L’Aquila Earthquake (Italy)

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