Seismic vulnerability assessment methodology for historic masonry buildings in the near-field areas

Moșoarcă, Marius; Onescu, Iasmina; Anastasiadis, Anastasios

doi:10.1016/j.engfailanal.2020.104662

Cited by 59 publications

(28 citation statements)

References 25 publications

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“…Also, the vertical cracks can be seen due to the presence of strong vertical forces and L and R surface waves. Following the on-site observation, there was defined a specific failure mechanism for historic masonry buildings located in the near-field areas, after earthquakes of crustal type, as illustrated in Figure 8 [9]. Figure 8: The specific failure mechanism for historic masonry buildings in the near-field areas similar to Banloc seismic region [9] When the real observed damages were compared with the EMS-98 damage scale for masonry buildings [10], there was noticed the fact that the real damage was around damage state D2-D3, as shown in Figure 9 [9].…”

Section: Seismicity Of the Areamentioning

confidence: 99%

“…Following the on-site observation, there was defined a specific failure mechanism for historic masonry buildings located in the near-field areas, after earthquakes of crustal type, as illustrated in Figure 8 [9]. Figure 8: The specific failure mechanism for historic masonry buildings in the near-field areas similar to Banloc seismic region [9] When the real observed damages were compared with the EMS-98 damage scale for masonry buildings [10], there was noticed the fact that the real damage was around damage state D2-D3, as shown in Figure 9 [9]. Figure 9: Correlation between EMS-98 damage scale and real damage observed after Banloc earthquake, 1991 [9] For Timisoara city, there can be generated an expected damage scenario, similar to the one that occurred in Banloc area.…”

Section: Seismicity Of the Areamentioning

confidence: 99%

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Optimization of Empirical Seismic Vulnerability Assessment for Masonry Buildings Following Nonlinear Analysis

Onescu¹,

Moșoarcă²

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Timisoara is the most important city located in Banat seismic area, characterized by shallow earthquakes of crustal type and was selected to be European Capital of Culture 2021. The majority of the historical buildings are made in masonry, with masonry vaults and wooden floors. First part of the paper presents a quick and simplified empirical methodology based on European studies. The second part presents a detailed mechanical nonlinear analysis obtained for some of the most important historical buildings in Timisoara, based on complete survey and site inspection. Moreover, the authors present a direct correlation between the empirical and the mechanical seismic vulnerabilities. In the end, based on the correlation results, there is presented the proposed empirical seismic vulnerability assessment methodology for the nearfield events. The methodology considers the specific failure mechanism for buildings with same characteristics and the particularities of Banat seismic area. The proposed methodology aims to adapt the quick and simplified empirical methodology to the near-field earthquakes effects. This could serve for quick and simplified assessment of seismic vulnerability for any building with similar mechanical, geometrical, architectural and urbanistic characteristics as the case study buildings, in areas with earthquakes similar to those specific to Banat seismic area. This kind of study could provide a better knowledge for the local authorities, helping them to develop or improve earthquake mitigation plan and to define new earthquake engineering design recommendations.

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Section: Seismicity Of the Areamentioning

confidence: 99%

Section: Seismicity Of the Areamentioning

confidence: 99%

Optimization of Empirical Seismic Vulnerability Assessment for Masonry Buildings Following Nonlinear Analysis

Onescu¹,

Moșoarcă²

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…These vulnerabilities significantly affect the dynamic response of the structure. In this context, many mechanical models have been developed in different works [14][15][16], where the uncertainties related to the vulnerability factors have been taken into consideration to quantify the seismic response of the entire aggregate.…”

Section: Introductionmentioning

confidence: 99%

Seismic Vulnerability Assessment and Strengthening Interventions of Structural Units of a Typical Clustered Masonry Building in the Campania Region of Italy

2021

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The present paper aims at inspecting the structural behaviour of a typical masonry aggregate located in the historical centre of Cercola, a municipality in the province of Naples. The clustered building under study consists of four structural units mutually connected to each other made of tuff stone and deformable floors. Two distinct structural units, namely in heading and intermediate places, in both isolated and aggregate conditions, are examined to estimate the influence of structural positions on the global seismic response of the examined case study buildings. For this purpose, non-linear static analyses are performed using the 3MURI software. Pushover analyses are conducted to both evaluate the seismic behaviour of examined structural units and improve their earthquake performances while considering proper retrofit interventions on vertical and horizontal structures. The analysis results are plotted in terms of risk factor, stiffness, and ductility. Finally, a set of fragility functions are derived to point out the structural response of the case study buildings before and after retrofit interventions. From the achieved results, it is highlighted that retrofit interventions improve the structural performances of the buildings, especially those of structural units in aggregate conditions.

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“…Since these existing buildings are frequently grouped in aggregate configuration into urban centers, the intrinsic vulnerability factors are difficult to be identified in advance, since the construction matrix of SUs is the living representation of the evolution of a set of design techniques relating to different time periods. Moreover, the complex structural articulation makes these buildings mutually interacting, so to further aggravate their susceptibility at damage under seismic phenomena [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Seismic Vulnerability Assessment and Simplified Empirical Formulation for Predicting the Vibration Periods of Structural Units in Aggregate Configuration

et al. 2021

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The present research aims at investigating the vibration period of structural units (SUs) of a typical masonry aggregate located in the historical center of Mirandola, a municipality in the province of Modena. The clustered building consists of eighteen SUs mutually interconnected to each other, which are characterized by solid brick walls and deformable floors. First of all, non-linear static analyses are performed by adopting the 3Muri software focusing on two distinct modelling techniques concerning the analyzed SUs in isolated and clustered configurations. Congruently to the procedure adopted, in order to evaluate a reliable seismic structural response of the SUs arranged in aggregate conditions, the contribution in terms of stiffness and mass derived from adjacent buildings is considered. The analysis results are represented in terms of risk factor, stiffness, and ductility. Secondly, the eigenvalue analysis is faithfully developed to identify the main vibration modes of the investigated SUs by proposing an empirical formulation, that allows for predicting the vibration period of structural units placed in aggregate configuration starting from the corresponding isolated ones. Finally, fragility functions are derived for both the heading and intermediate SUs to point out the expected damages under earthquakes with different intensities.

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Seismic vulnerability assessment methodology for historic masonry buildings in the near-field areas

Cited by 59 publications

References 25 publications

Optimization of Empirical Seismic Vulnerability Assessment for Masonry Buildings Following Nonlinear Analysis

Optimization of Empirical Seismic Vulnerability Assessment for Masonry Buildings Following Nonlinear Analysis

Seismic Vulnerability Assessment and Strengthening Interventions of Structural Units of a Typical Clustered Masonry Building in the Campania Region of Italy

Seismic Vulnerability Assessment and Simplified Empirical Formulation for Predicting the Vibration Periods of Structural Units in Aggregate Configuration

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