Towards the Use of Time-History Analysis for the Seismic Assessment of Masonry Structures

Penna, Andrea; Rota, María; Galasco, Alessandro; Mouyiannou, Amaryllis

doi:10.1007/978-3-319-16130-3_4

Cited by 4 publications

(2 citation statements)

References 28 publications

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“…Nonlinear time‐history analyses (NLTHA) can provide good predictions of local and global earthquake‐induced deformations, allowing direct evaluation of the structural performance. However, their implementation within the professional practice is often hindered by the intrinsic uncertainties and complexities of defining cyclic constitutive models, assigning viscous damping models, knowing significant physical properties, and selecting representative ground motions . Conversely, nonlinear static procedures (NSP) are more widely employed to simulate the seismic response of structures, even though the advantages and limitations of NSP as opposed to NLTHA are still being debated .…”

Section: Introductionmentioning

confidence: 99%

Improved evaluation of inelastic displacement demands for short‐period masonry structures

Guerrini

Graziotti

Penna

et al. 2017

Earthq Engng Struct Dyn

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Summary This work discusses the simplified estimation of earthquake‐induced nonlinear displacement demands as required by nonlinear static procedures, with particular attention on short‐period masonry structures. The study focuses on systems with fundamental periods between 0.1 and 0.5 s, for which inelastic amplification of the elastic displacement demand is more pronounced; hysteretic force‐displacement relationships characteristic of masonry structures are adopted, because these structures are more commonly found within the considered period range. Referring to the results of nonlinear dynamic analyses of single‐degree‐of‐freedom oscillators, some limitations of the Eurocode 8 and Italian Building Code formulations are first discussed, then an improved equation is calibrated that relates inelastic and elastic displacement demands. Numerical values of the equation parameters are obtained, considering the amount of hysteretic energy dissipation associated with various damage mechanisms observed in masonry structures. Safety factors are also calculated to determine several percentiles of the displacement demand. It is shown that the proposed equation can be extended to more dissipative systems. Finally, the same formulation is adapted to the estimation of seismic displacements when elastic analysis procedures are employed. Copyright © 2017 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Improved evaluation of inelastic displacement demands for short‐period masonry structures

Guerrini

Graziotti

Penna

et al. 2017

Earthq Engng Struct Dyn

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“…Figure 9 demonstrates that imposing the load in one or two directions in the rigid base case change the damage response of the structure: a small difference in the elastic part (u top < 7 cm) is observed between the 1DIR and 2DIR cases, associated possibly to directionality effects. The limit damage states (performance thresholds) are also represented in this Figure . They were adopted from those proposed by Penna et al (2004) and are summarized in Table 4. The ultimate displacement of bridge pier (∆ u ) is defined at 70 cm.…”

Section: Damage Index and Structural Mechanical Behaviormentioning

confidence: 99%

Integrated Assessment of Basin Effects on Seismic Damage: A Coupled 3D SEM-FEM Approach with Domain Reduction Method

Soto,

Lopez-Caballero

2024

Preprint

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Sedimentary materials enclosed in basins modify the ground motion by energy trapping, resonance and surface wave generation at the basin edge. In general, the effects of basin presence are approximated by amplification factors (AF), focusing directly on the horizontal components of ground motion. The current study presents a coupled framework to assess the impact of basin effects on the seismic damage of a nonlinear structure. Using the Domain Reduction Method (DRM), a complete time-analysis from the earthquake source, at a regional scale, to an infrastructure, at a local scale is performed. The numerical wave propagation simulation uses a coupled 3D SEM-FEM approach including non-linearities and soil-structure interaction. With the results is possible to correlate the amplification factors obtained from ground motions and the associated damage of the structure. The findings indicate that basins' effect on structural damage may be estimated in a simplified form using a combination of a structural behavior predictor and AFs derived from the free-field ground motions. However, these factors should be correctly predicted, including both basin and source variability.

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Uses and limits of the Equivalent Frame Model on existing unreinforced masonry buildings for assessing their seismic risk: A review

Quagliarini

Maracchini

Clementi

2017

Journal of Building Engineering

144

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Towards the Use of Time-History Analysis for the Seismic Assessment of Masonry Structures

Cited by 4 publications

References 28 publications

Improved evaluation of inelastic displacement demands for short‐period masonry structures

Improved evaluation of inelastic displacement demands for short‐period masonry structures

Integrated Assessment of Basin Effects on Seismic Damage: A Coupled 3D SEM-FEM Approach with Domain Reduction Method

Uses and limits of the Equivalent Frame Model on existing unreinforced masonry buildings for assessing their seismic risk: A review

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