Numerical Simulation of the Failure Propagation of Masonry Buildings during an Earthquake

Furukawa, Aiko; Kiyono, Junji; Toki, Kenzo

doi:10.2328/jnds.33.11

Cited by 18 publications

(10 citation statements)

References 9 publications

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“…As demonstrated in Tagel‐Din and Meguro, the Poisson effect is accounted intrinsically by the AEM, whereas the RBSM formulation requires additional DOFs or the spring stiffness manipulation . Finally, unlike the AEM, analysis up to complete collapse of a structure using RBSM is unattainable, since the latter does not consider the recontact between neighbouring elements (if different from the ones initially set), as noted in Bakeer and Furukawa et al In this work, the use of the AEM in the modelling of (CS) masonry walls is further discussed and verified.…”

Section: Introductionmentioning

confidence: 90%

Using the applied element method for modelling calcium silicate brick masonry subjected to in‐plane cyclic loading

Malomo

Pinho

Penna

2018

Earthq Engng Struct Dyn

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Summary The response of calcium silicate unreinforced masonry construction to horizontal cyclic loading has recently become the focus of experimental and numerical research, given its extensive use in some areas of the world that are now exposed to induced earthquakes (eg, north of the Netherlands). To assess the seismic behaviour of such construction, a relatively wide range of modelling methodologies are available, amongst which the discrete elements approach, which takes into account the intrinsic heterogeneity of a brick‐mortar assembly, can probably be deemed as the most appropriate computational procedure. On the other hand, however, since discrete elements numerical methods are based on a discontinuum domain, often they are not able to model every stage of the structural response adequately, and because of the high computational burden required, the analysis scale should be chosen carefully. The applied element method is a relatively recent addition to the discrete elements family, with a high potential for overcoming the aforementioned limitations or difficulties. Initially conceived to model blast events and concrete structures, its use in the earthquake engineering field is, of late, increasing noticeably. In this paper, the use of the applied element method to model the in‐plane cyclic response of calcium silicate masonry walls is discussed and scrutinised, also through the comparison with experimental results of in‐plane cyclic shear‐compression tests on unreinforced masonry walls.

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Section: Introductionmentioning

confidence: 90%

Using the applied element method for modelling calcium silicate brick masonry subjected to in‐plane cyclic loading

Malomo

Pinho

Penna

2018

Earthq Engng Struct Dyn

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“…Finally, numerical damping is used to model the actual energy dissipation. In dynamics, Rayleigh damping is generally preferred [37,38], including mass-and stiffnessproportional contributions, because it gives constant damping across a relatively wide frequency range. However, only mass-proportional damping is considered here, leading to a reasonable timestep ∆t [38].…”

Section: Numerical Dem Strategy For Dynamic Simulationsmentioning

confidence: 99%

Dynamic Numerical Simulations of Dry-Stone Retaining Walls: Identification of the Seismic Behaviour Factor

et al. 2022

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Dry-stone retaining walls can be found worldwide and constitute critical assets of the built heritage for many sloped territories, holding cultural and economic value. Their design currently follows empirical rules, though the first steps towards a static safety assessment have recently been proposed in the scientific and engineering literature. However, the seismic design of these structures still lacks research studies. Therefore, this work conducts discrete element simulations to assess their dynamic behaviour. First, the approach is validated through existing scaled-down shaking table experiments, and it is found that the numerical simulations are conservative (i.e., on the safe side). Next, full-scale dry-stone retaining walls are subjected to harmonic excitations as an idealisation of earthquakes. Finally, based on a simplified limit-equilibrium analytical tool, their seismic behaviour factor is estimated for the first time in the literature, which falls within the proposed values of the European standards (Eurocode 8). This will allow engineers to adopt a validated behaviour factor in practice to assess and design dry-stone retaining walls with a pseudo-static approach.

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“…A small non-zero value ( ∼ = 0.001) has been used for the friction failure coefficient (Mehrabi and Shing, 1997). Also, the mortar tensile and shear stiffness have been determined using Equations (4) and (5), proposed by Furukawa et al (2012):…”

Section: Numerical Simulationmentioning

confidence: 99%

Inherent Adaptive Structures Using Nature-Inspired Compound Elements

Chenaghlou

Kheirollahi

Abedi

et al. 2020

Front. Built Environ.

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Biomimicry studies have attracted significant attention in research and practice, leading to effective engineering solutions to develop new types of structures inspired by natural systems. The objective of this study is to employ natural structures' inherent adaptivity under changing loading conditions. Three new types of compound elements are proposed that are able to improve the structure load-bearing capacity through passive inherent adaptivity. A self-centering system, inspired by the human spine, which comprises a column pre-stressed through cables, is employed as a kinematic isolator. A similar self-centering system is applied to increase the load-bearing capacity of unreinforced masonry columns. An axially loaded element, inspired by the bamboo stem, which comprises a steel core reinforced by a series of cylindrical plates that are encased in a steel tube, is employed to control the onset of instability in long-span truss structures. Application to typical frame, masonry, and truss structures is investigated through finite element analysis. Results show that the proposed compound elements are effective to increase the structure load-bearing capacity and to reduce the response under seismic excitation owning to their inherent adaptive features.

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Numerical Simulation of the Failure Propagation of Masonry Buildings during an Earthquake

Cited by 18 publications

References 9 publications

Using the applied element method for modelling calcium silicate brick masonry subjected to in‐plane cyclic loading

Using the applied element method for modelling calcium silicate brick masonry subjected to in‐plane cyclic loading

Dynamic Numerical Simulations of Dry-Stone Retaining Walls: Identification of the Seismic Behaviour Factor

Inherent Adaptive Structures Using Nature-Inspired Compound Elements

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