Distinct Element Modelling of Masonry Walls under Out-Of-Plane Seismic Loading

Meriggi, Pietro; Felice, Gianmarco de; Santis, Stefano De; Gobbin, Francesca; Mordanova, Anna; Pantò, Bartolomeo

doi:10.1080/15583058.2019.1615152

Cited by 35 publications

(32 citation statements)

References 22 publications

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“…Hence it was decided to reduce jkn until the building modes of vibrations resulted in values that were similar to previous observations but respected the relationship with brick dimensions. This tuning strategy to establish the material properties has been implemented by multiple researchers (Papantonopoulos et al, 2002, Psycharis et al, 2003, Lemos and Campos Costa, 2017, Meriggi et al, 2019 who calibrated their models by best fitting stiffness parameters to match MPa/m, jks =845 MPa/m, friction angle = 30 ̊ ). The aforementioned joint material properties were selected to ensure that the eigenvalue analysis delivered a period of 0.25 s for the Y translational mode of vibration, coinciding with the estimate given by equation T = 0.0625·h 0.75 from NZS1170.5 (2004) and AS1170.4 (2007.…”

Section: Comparison Between Lumped Mass-spring and 3d Dem Modelsmentioning

confidence: 99%

Using DEM to Investigate Boundary Conditions for Rocking URM Facades Subjected to Earthquake Motion

et al. 2021

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Façade overturning is a frequently observed collapse mechanism occurring in unreinforced masonry (URM) buildings during high-intensity earthquake-induced shaking.Following complete separation from a building, the rocking motion of a URM façade and the associated impact against the return walls are the factors that continue to contribute to the façade out-of-plane capacity. Seismic vulnerability studies of URM façades have historically neglected the interaction between building earthquake response and the rocking response of the façade, whereas in the study reported herein this interaction was analysed using the discrete element modelling (DEM) approach, resulting in a façade out-of-plane capacity reduction. The increment in the dynamic rocking capacity caused by the frictional connection between the URM façade and the building was also analysed and is reported.

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Section: Comparison Between Lumped Mass-spring and 3d Dem Modelsmentioning

confidence: 99%

Using DEM to Investigate Boundary Conditions for Rocking URM Facades Subjected to Earthquake Motion

et al. 2021

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“…Thanks to the careful reproduction of masonry pattern and to the capability of the DEM in simulating the motion in finite kinematics, the collapse mechanism and the crack pattern induced by the seismic action are detected, without the need to define the mechanism a priori. The effectiveness of the Discrete Element Method (DEM) to capture the seismic behaviour of masonry structures has already been proved in Literature (Azevedo et al 2000;de Felice 2011;Al Shawa et al 2012;Malomo et al 2018; Mordanova and de Felice 2018; Meriggi et al 2019) but its use for seismic assessment still needs to be settled. Accordingly, a procedure for static pushover and dynamic impulsive analyses has been developed in (Gobbin et al 2021) and applied here to seven masonry churches located in L'Aquila (Italy) region and damaged during the 2009 earthquake.…”

Section: Introductionmentioning

confidence: 99%

Overturning of the façade in single-nave churches under seismic loading

Felice

Fugger

Gobbin

2021

Bull Earthquake Eng

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The out-of-plane collapse of the façade represents one of the major threats and the most frequent cause of damages of churches due to strong earthquakes. Due to the slenderness of the façade and the lack of adequate connections to the side walls and the wooden roof, the seismic action can trigger the overturning. A detailed assessment is therefore required to judge whether or not to intervene. This paper presents an approach for the seismic assessment of the stability of the façade, through a discrete element model based on a photographic survey, with the aim of representing the actual geometry and arrangement of the stone units and their effects on the kinematics of the overturning. The collapse mechanism is simulated with both, quasi-static pushover and dynamic pulse-based analyses and the results compared to those of conventional rigid-body kinematics. The proposed approach is then applied to seven masonry churches that suffered severe damages during the 2009 L’Aquila (Italy) earthquake and the failure mode provided by the analyses is compared to the damages caused by the earthquake. The method is able to give a reliable estimate of the expected failure mechanism, taking into account the quality of the masonry and the connections to the side walls, while also providing the seismic acceleration required to trigger the motion and the ultimate displacement beyond which collapse occurs.

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“…Although originally addressed to granular materials and geotechnics, they have shown their capabilities in the simulation of masonry structures [16][17][18][19]. In particular, DEM has been largely used in the simulation of stone block masonry [20,21]. Application to historic [22] and archaeological [23,24] structures has also proved to be effective in the seismic simulation of ancient remains.…”

Section: Introduction 1restoration Of Archaeological Remainsmentioning

confidence: 99%

Numerical Prediction of the Seismic Behavior of Reassembled Columns in Ancient Structures: An Anastylosis Model for the Temple of Apollo Pythios in Gortyn (Crete)

et al. 2021

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The Temple of Apollo Pythios in Gortyn (Crete, Greece) dates back to the mid-7th century BC. The temple underwent several transformations and an ultimate destruction over time that resulted in the current remains of a Roman colonnade composed of six fragmented stone columns lying on the ground within the naos. In addition, the region was struck by several earthquakes which contributed to the various changes. The analysis of the fragments composing the column portions and their geometric features provided a possible outline for their standing repositioning. Based on the current seismic hazard of the region, a predictive numerical model of the colonnade in the anastylosis conditions suggested the need for proper connections between the fragments and the bases to ensure their overall conservation as a compound structure. The comparison of various configurations of intervention and the simple superimposition of the fragments also provided details on the accomplishment of minimal and compatible solutions.

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Distinct Element Modelling of Masonry Walls under Out-Of-Plane Seismic Loading

Cited by 35 publications

References 22 publications

Using DEM to Investigate Boundary Conditions for Rocking URM Facades Subjected to Earthquake Motion

Using DEM to Investigate Boundary Conditions for Rocking URM Facades Subjected to Earthquake Motion

Overturning of the façade in single-nave churches under seismic loading

Numerical Prediction of the Seismic Behavior of Reassembled Columns in Ancient Structures: An Anastylosis Model for the Temple of Apollo Pythios in Gortyn (Crete)

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