Impact of ground floor openings percentage on the dynamic response of typical Dutch URM cavity wall structures

Malomo, Daniele; Morandini, Chiara; Crowley, Helen; Pinho, Rui; Penna, Andrea

doi:10.1007/s10518-020-00976-z

Cited by 9 publications

(4 citation statements)

References 52 publications

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“…al., 48 used to quantify the debris area and similarly used in other AEM applications. 5,99 The location of the debris is described as interior or exterior depending on their relative location to the footprint of the church at the end No data are presented for C2, as no collapses were observed. To compute the abovementioned quantities, AEM geometries were first exported as solids via .dwg files to the computer-aided design software Rhinoceros, 100 and then debris areas and volumes of each block manually calculated using embedded Rhinoceros commands.…”

Section: Collapse Analysis and Predicted Debris Distributionmentioning

confidence: 99%

“…A polygon connecting debris elements by polylines comprises the extent of the debris distribution, a method informed by the collapse analysis completed by Domaneschi et. al., 48 used to quantify the debris area and similarly used in other AEM applications 5,99 . The location of the debris is described as interior or exterior depending on their relative location to the footprint of the church at the end of the signal.…”

Section: Collapse Analysis and Predicted Debris Distributionmentioning

confidence: 99%

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Pragmatic seismic collapse meso‐scale analysis of old Dutch masonry churches

Davis,

Cogliano,

Casotto

et al. 2023

Earthq Engng Struct Dyn

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The demand for advanced nonlinear time‐history and seismic collapse simulations of old unreinforced masonry (URM) constructions to support informed risk evaluation and mitigation plans is rapidly increasing in the structural engineering profession. On one hand, offering cutting‐edge solutions based on the latest advances is challenging for practitioners, given the reduced timeframe usually available for projects and the specialized knowledge required. On the other hand, researchers frequently face difficulties in accessing old buildings and gathering key data required in complex numerical collapse analysis strategies. In this work, a pragmatic approach for evaluation of the earthquake collapse response of vulnerable old URM churches typical of the Northern Netherlands, now exposed to low‐magnitude induced seismicity due to gas extraction, is presented. To bridge the gap between academic and industry applications, an integrated framework is proposed that combines archival and onsite research, code‐based prescriptions, geometrical characterization and simplified discrete element modeling. Main outcomes include the identification of recurrent damage patterns for five old URM churches erected during the 11th, 13th, 14th, and 19th centuries, representative of key traditional multi‐leaf and cavity‐wall structural types, as well as relevant failure mechanisms and collapsed debris distributions for seismic signals of varying intensities. Produced results constitute a solid foundation of data on which to base the design of ad‐hoc retrofits and development of tailored risk assessment models. This study opens a new line of inquiry while discussing practical challenges and research questions which arose, to be of interest to both applied researchers and structural engineering professionals.

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Section: Collapse Analysis and Predicted Debris Distributionmentioning

confidence: 99%

Section: Collapse Analysis and Predicted Debris Distributionmentioning

confidence: 99%

Pragmatic seismic collapse meso‐scale analysis of old Dutch masonry churches

Davis,

Cogliano,

Casotto

et al. 2023

Earthq Engng Struct Dyn

Self Cite

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“…According to AEM, a given URM structure is idealised as an assembly of rigid units connected by linear and nonlinear springs, where the mechanical properties of the system are lumped. The main characteristics of the proposed AEM-based modelling strategy are summarised below (Figure 2) while interested readers may refer to [8,9,10] for further details:…”

Section: Numerical Modelmentioning

confidence: 99%

Influence of Various Light Timber Retrofit Layouts on the Dynamic Response of Typical Duch Masonry Terraced Houses

Morandini¹,

Malomo²,

Pinho³

et al. 2021

12th International Conference on Structural Analysis of Historical Constructions

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A majority of the residential building stock in Groningen (The Netherlands), which has been lately exposed to low intensity ground motions due to gas extraction, consists of unreinforced masonry (URM) structures not originally designed to withstand earthquakes. Amongst them, the terraced house building typology proved to be particularly vulnerable towards horizontal actions. Experimental results from a recently performed shake-table test on a full-scale terraced house prototype, characterised by the presence of a timber retrofitting system, seem to indicate that the dynamic response of these structures might be consistently improved through the employment of such a cost-effective light retrofitting solution. In this work, an advanced discontinuum-based model, implemented in the framework of the Applied Element Method (AEM), is developed to extend experimental results and to numerically investigate the influence of a number of additional timber retrofit layouts, characterised by different geometrical configurations, on the building behaviour. Each timber component was explicitly represented in the AEM models to represent the possible interaction among URM walls and the retrofitting system. First, the proposed modelling strategy is validated against experimental tests on both non-retrofitted and retrofitted URM panels subjected to cyclic shearcompression loading. Then, calibrated mechanical parameters were directly implemented in the full-scale building model. Given the good agreement between numerical and experimental outcomes in terms of both damage evolution and hysteretic response, a comprehensive parametric study was undertaken. Numerical evidence seems to suggest that the employment of different retrofit layouts may have a significant influence on the dynamic behaviour of the selected building typology.

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“…In addition, a Gaussian-based AEM was also developed in order to obtain a low computational cost and a higher accuracy for progressive collapse analyses [12]. Recent applications of AEM addressed also the seismic behaviour of unreinforced masonry structures [2,[13][14][15][16][17][18], and blast loads on masonry [19] and masonry infill walls [20]. The AEM was adopted for several progressive collapse assessments for precast prestressed reinforced concrete beams [21,22] and steel moment frames structures [23,24].…”

Section: Introductionmentioning

confidence: 99%

Applied Element Modelling of Warping Effects in Thin-Walled C-Shaped Steel Sections

Gabbianelli

2021

Buildings

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The Applied Element Method (AEM) is a relatively recent numerical technique, originally conceived for simulating the large displacement nonlinear response of reinforced concrete, masonry and steel structures, and successful applications have been presented by various researchers. Recently, AEM was used to model the mechanical behaviour of steel storage pallet racks, i.e., particular cold-formed steel structures typically employed for storing goods and materials. Such systems are often subjected to peculiar displacements and stresses due to warping effects, which are inherent and often govern their behaviour, increasing the peak strength and ultimate displacement demand. This phenomenon has not been studied through AEM yet; hence, this work investigates the capabilities of AEM in simulating the warping effects in typical steel rack members, i.e., thin-walled C-shaped sections. Preliminary results and comparison against established modelling approaches indicate that AEM can accurately simulate this phenomenon, both in terms of displacements and stresses.

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Impact of ground floor openings percentage on the dynamic response of typical Dutch URM cavity wall structures

Cited by 9 publications

References 52 publications

Pragmatic seismic collapse meso‐scale analysis of old Dutch masonry churches

Pragmatic seismic collapse meso‐scale analysis of old Dutch masonry churches

Influence of Various Light Timber Retrofit Layouts on the Dynamic Response of Typical Duch Masonry Terraced Houses

Applied Element Modelling of Warping Effects in Thin-Walled C-Shaped Steel Sections

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