In-plane structural performance of dry-joint stone masonry Walls: A spatial and non-spatial stochastic discontinuum analysis

Pulatsu, Bora; Gönen, Semih; Erdogmus, Ece; Lourénço, Paulo B.; Lemos, José V.; Prakash, R.

doi:10.1016/j.engstruct.2021.112620

Cited by 30 publications

(14 citation statements)

References 64 publications

(65 reference statements)

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“…There are 15 contact points defined along each joint edge in the discrete element model to obtain accurate stress distributions, discussed in [10,37]. The normal and shear contact stiffnesses are predicted as 4 GPa/m and 1.6 GPA/m, in line with the previous studies [38,39], which corresponds to the combined stiffness of masonry unit and stone masonry joints (related to the joint roughness and irregularities). Furthermore, joint friction angle is estimated through inverse engineering discussed in the following section in detail.…”

Section: Dem-based Analysis Of the Masonry Arch Under Static And High...supporting

confidence: 79%

Static and Impact Response of a Single-Span Stone Masonry Arch

2021

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Unreinforced masonry structures are susceptible to man-made hazards such as impact and blast loading. However, the literature on this subject mainly focuses on masonry wall behavior, and there is a knowledge gap about the behavior of masonry arches under high-strain loading. In this context, this research aims to investigate both quasistatic and impact response of a dry-joint stone masonry arch using the discrete element method. Rigid blocks with noncohesive joint models are adopted to simulate dry-joint assemblages. First, the employed modeling strategy is validated utilizing the available experimental findings, and then sensitivity analyses are performed for both static and impact loading, considering the effect of joint friction angle, contact stiffness, and damping parameters. The outcomes of this research strengthen the existing knowledge in the literature regarding the computational modeling of masonry structures that are subjected to usual and extreme loading conditions. The results highlight that applied discontinuum-based numerical models are more sensitive to stiffness parameters in high-strain loading than static analysis.

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Section: Dem-based Analysis Of the Masonry Arch Under Static And High...supporting

confidence: 79%

Static and Impact Response of a Single-Span Stone Masonry Arch

2021

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“…Typical analyses of masonry structures assume spatially-invariant mechanical properties throughout structural elements [26, [28][29][30]36], with compressive strength obtained in accordance with the literature (e.g., [37,38]). This type of analysis considers mechanical parameters as deterministic values to assess load-bearing capacity of the structure, even if some of those parameters are probabilistic in nature and their assessment through in-situ testing is rather complex.…”

Section: Degradation Modellingmentioning

confidence: 81%

“…Probabilistic seismic assessment of masonry structures, considering uncertainty in the material properties has recently been explored by researchers [28][29][30]. In the approach used in this study, the following assumptions played an important role in model development:…”

Section: Numerical Modelling Accounting For Degradationmentioning

confidence: 99%

“…For walls with unit-to-unit spatial variability, both the shear strength and the random presence of lower-than-average unit tensile strengths will determine the locations that the cracking first occurs. Moreover, as illustrated in [30] non-spatial analysis is a part of spatial analysis, representing the cases where the parameters are distributed with much less variance. Aging as a natural phenomenon may concern a specific area of the wall, or rather it could not affect a widespread area.…”

Section: Numerical Modelling Accounting For Degradationmentioning

confidence: 99%

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Material aging effects on the in-plane lateral capacity of tuff stone masonry walls: a numerical investigation

2022

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Recent studies have shown how the variability of material properties affects the nonlinear behaviour of unreinforced masonry (URM) walls. To preserve the historical built heritage, variations in structural capacity of URM buildings associated to aging and deterioration of masonry should be quickly predicted, by integrating with structural health monitoring and risk management. In this study, relationships between structural capacity features and material properties are numerically investigated for single walls, based on a structural modelling strategy that was experimentally validated on full-scale URM walls. The paper proposes an evaluation of the effects of degradation of material properties on the macroscopic descriptors of single masonry walls, such as peak strength and stiffness, also considering the uncertainties in the estimate of those properties. The authors do not attempt to model the physical processes of material aging with time, but assume certain levels of material degradation and investigate their effects on the structural response and capacity. Force–displacement curves and failure modes are associated with the overall nonlinear response of masonry walls due to progressive deterioration of material properties. Regression models are then proposed to predict variations in the peak load-bearing capacity and in -plane lateral stiffness when the mechanical properties of the constituents changed.

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“…It is worth noting that the development of fragility curves helps to account for several sources of variabilities, such as the dispersion due to the record-to-record and the intra-model variability and that relative to the definition of the damage states. In addition, most recent developments in probabilistic approaches of the seismic assessment have been proposed, such as [51,52].…”

Section: Methodsmentioning

confidence: 99%

Seismic Fragility for a Masonry-Infilled RC (MIRC) Building Subjected to Liquefaction

Forcellini

2021

Applied Sciences

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Historical earthquakes have documented that lateral spread and settlements are the most significant damages induced by soil liquefaction. Therefore, assessing its effects on structural performance has become a fundamental issue in seismic engineering. In this regard, the paper proposes to develop analytical fragility curves of a Masonry-Infilled RC (MIRC) structure subjected to liquefaction-induced damages. In order to reproduce the nonlinear cyclic behavior (dilation tendency and the increase in cyclic shear strength) due to liquefaction, nonlinear hysteretic materials and advanced plasticity models were applied. The findings herein obtained in terms of seismic fragility of the MIRC building subjected to liquefaction may be implemented as guidelines or code provisions.

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In-plane structural performance of dry-joint stone masonry Walls: A spatial and non-spatial stochastic discontinuum analysis

Cited by 30 publications

References 64 publications

Static and Impact Response of a Single-Span Stone Masonry Arch

Static and Impact Response of a Single-Span Stone Masonry Arch

Material aging effects on the in-plane lateral capacity of tuff stone masonry walls: a numerical investigation

Seismic Fragility for a Masonry-Infilled RC (MIRC) Building Subjected to Liquefaction

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