Historical masonry building aggregates: advanced numerical insight for an effective seismic assessment on two row housing compounds

Valente, Marco; Milani, Gabriele; Grande, Ernesto; Formisano, Antonio

doi:10.1016/j.engstruct.2019.04.025

Cited by 92 publications

(31 citation statements)

References 44 publications

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“…Furthermore, it is important to note that loadbearing masonry walls serve as both structural and architectural components which require a multidisciplinary approach and strict collaboration between engineer and architects during the design process. Additionally, masonry buildings are mainly found as aggregates which result in a high level of structural irregularities due, for example, to the misaligned of the floors between adjacent buildings [1][2][3]. Design codes classify the buildings as regular and irregular, and the irregularity is categorized into two types, in plan and in elevation.…”

Section: Description Of Structural Irregularities: Is It Comprehensive Enough For Masonry Buildings?mentioning

confidence: 99%

“…This is among the main reasons why masonry, as a structural material, has been replaced by other materials, such as reinforced concrete and steel. However, unreinforced masonry buildings, as isolated or in aggregates (with rigid or flexible diaphragm), are largely found in many countries in the world with both low and high seismicity [1][2][3], which justify the improvement of European and American seismic codes concerning masonry structures [4].…”

Section: Introductionmentioning

confidence: 99%

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Overview on the Nonlinear Static Procedures and Performance-Based Approach on Modern Unreinforced Masonry Buildings with Structural Irregularity

Aşıkoğlu¹,

Vasconcelos²,

Lourénço³

2021

Buildings

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Performance-based design plays a significant role in the structural and earthquake engineering community to ensure both safety and economic feasibility. Its application to masonry building design/assessment is limited and requires straightforward rules considering the characteristics of masonry behavior. Nonlinear static procedures mainly cover regular frame system structures, and their application to both regular and irregular masonry buildings require further investigation. The present paper addresses two major issues: (i) the definition of irregularity in masonry buildings, and (ii) the applicability of classical nonlinear static procedures to irregular masonry buildings. It is observed that the irregularity definition is not comprehensive and has different descriptions among the seismic codes as well as among researchers, particularly in the case of masonry buildings. The lack of global language may result in the misuse of the procedures, while adjustments may be essential due to irregularity effects. Therefore, irregularity indices given by different codes and research studies are discussed. Furthermore, an overview of nonlinear static procedures implemented within the framework of the performance-based approach and improvements proposed for its application in masonry buildings is presented.

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Section: Description Of Structural Irregularities: Is It Comprehensive Enough For Masonry Buildings?mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Overview on the Nonlinear Static Procedures and Performance-Based Approach on Modern Unreinforced Masonry Buildings with Structural Irregularity

Aşıkoğlu¹,

Vasconcelos²,

Lourénço³

2021

Buildings

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“…The non-linear FE model has been constructed wherein the mechanical behavior of the masonry material has been reproduced using the concrete damage plasticity (CDP) constitutive model (Lubliner et al 1989;Lee and Fenves 1989), which is broadly acknowledged in the literature for seismic vulnerability and NLDA (Formisano et al 2018;Valente et al 2019;Milani and Clementi 2019;Acito et al 2021). As available in ABAQUS, the use of CDP requires the adoption of an isotropic constitutive behavior for the FEM material, because, from a theoretical point of view, it is based on isotropic elasticity in combination with isotropic plasticity.…”

Section: The Fe Modelmentioning

confidence: 99%

A new method for earthquake-induced damage identification in historic masonry towers combining OMA and IDA

Kita

Cavalagli

Venanzi

et al. 2021

Bull Earthquake Eng

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This paper presents a novel method for rapidly addressing the earthquake-induced damage identification task in historic masonry towers. The proposed method, termed DORI, combines operational modal analysis (OMA), FE modeling, rapid surrogate modeling (SM) and non-linear Incremental dynamic analysis (IDA). While OMA-based Structural Health Monitoring methods using statistical pattern recognition are known to allow the detection of small structural damages due to earthquakes, even far-field ones of moderate intensity, the combination of SM and IDA-based methods for damage localization and quantification is here proposed. The monumental bell tower of the Basilica of San Pietro located in Perugia, Italy, is considered for the validation of the method. While being continuously monitored since 2014, the bell tower experienced the main shocks of the 2016 Central Italy seismic sequence and the on-site vibration-based monitoring system detected changes in global dynamic behavior after the earthquakes. In the paper, experimental vibration data (continuous and seismic records), FE models and surrogate models of the structure are used for post-earthquake damage localization and quantification exploiting an ideal subdivision of the structure into meaningful macroelements. Results of linear and non-linear numerical modeling (SM and IDA, respectively) are successfully combined to this aim and the continuous exchange of information between the physical reality (monitoring data) and the virtual models (FE models and surrogate models) effectively enforces the Digital Twin paradigm. The earthquake-induced damage identified by both data-driven and model-based strategies is finally confirmed by in-situ visual inspections.

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“…Assessment of historical building aggregates is one of the most contemporary themes in the seismic engineering. Nowadays indeed, the scientific community has become aware of the complexity evaluating the seismic response of structural aggregates (Greco et al, 2018;Senaldi et al, 2010Senaldi et al, , 2019Ruggieri et al, 2018;Valente et al, 2019). It is worth noting that structural interactions are strictly related to the quality of connections among structural components, such as walls and floors.…”

Section: Analysis Of Masonry Building Aggregatesmentioning

confidence: 99%

An Interdisciplinary Approach for the Seismic Vulnerability Assessment of Historical Centres in Masonry Building Aggregates: Application to the City of Scarperia, Italy

Cardinali

Cristofaro

Ferrini

et al. 2020

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. The seismic vulnerability of masonry building aggregates is very difficult to determine, since it is affected by many uncertainties. The most uncertain quantities concern the historical periodization of structural aggregates. Moreover, the studies made at the urban scale can hardly be thorough, and usually the knowledge achieved on the single units is not fully satisfactory, so that the structural designer has to deal with uncompleted architectonical surveys and partial data; one of the most important problems concerns the lack of knowledge about the boundary conditions between adjacent structures. In order to perform mechanical analyses, an extensive knowledge of materials and techniques adopted is required. In this paper, an integrated methodology for the seismic assessment of building aggregate is presented. It concerns a multidisciplinary knowledge-based approach calibrated over the historical centres and the urban aggregates; the procedure joins different aspects, such as the use of modern technologies for an integrated knowledge, plans reconstructions through archival documents, laser scanner digital survey of urban fronts, non-destructive investigations of the materials. GIS and BIM platforms have been used to implement and collect data in order to perform detailed analyses. The information allowed to assess the seismic vulnerability of the building aggregates and the expected damage scenarios through empirical methodologies. The city of Scarperia, founded a few kilometres from Florence during the Medieval Age and characterized by a medium seismicity, has been chosen as a case study for the presented procedure.

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Historical masonry building aggregates: advanced numerical insight for an effective seismic assessment on two row housing compounds

Cited by 92 publications

References 44 publications

Overview on the Nonlinear Static Procedures and Performance-Based Approach on Modern Unreinforced Masonry Buildings with Structural Irregularity

Overview on the Nonlinear Static Procedures and Performance-Based Approach on Modern Unreinforced Masonry Buildings with Structural Irregularity

A new method for earthquake-induced damage identification in historic masonry towers combining OMA and IDA

An Interdisciplinary Approach for the Seismic Vulnerability Assessment of Historical Centres in Masonry Building Aggregates: Application to the City of Scarperia, Italy

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