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Seismic Vulnerability Evaluation of a Historical Masonry Tower: Comparison between Different Approaches

Applied sciences, 2022-11, Vol.12 (21), p.11254 [Peer Reviewed Journal]

2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2076-3417 ;EISSN: 2076-3417 ;DOI: 10.3390/app122111254

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  • Title:
    Seismic Vulnerability Evaluation of a Historical Masonry Tower: Comparison between Different Approaches
  • Author: Scamardo, Manuela ; Zucca, Marco ; Crespi, Pietro ; Longarini, Nicola ; Cattaneo, Sara
  • Subjects: behavior factor ; Building codes ; Building information modeling ; Building management systems ; Earthquake damage ; Earthquake loads ; Earthquakes ; Fibers ; Flooring ; Frequency analysis ; Historical buildings ; Masonry ; Masonry construction ; masonry tower ; Mathematical models ; Methods ; nonlinear analysis ; Numerical methods ; Performance evaluation ; Resonant frequencies ; Seismic activity ; seismic analysis ; Seismic engineering ; Seismic hazard ; Seismic response ; Seismic surveys ; Shear strength ; Structural behavior ; Structural engineering ; Structural safety ; Towers
  • Is Part Of: Applied sciences, 2022-11, Vol.12 (21), p.11254
  • Description: Throughout the last few decades, the scientific community has paid great attention to the structural safety of historical masonry constructions, which have high vulnerability with respect to seismic activities. Masonry towers are very widespread in Italy and represent an important part of the built heritage to be preserved. Different numerical methods with different levels of refinement were developed in the literature to evaluate their seismic performance. The present study shows a practical application of the seismic vulnerability evaluation of a masonry tower using different approaches. The aim is to provide practical suggestions to engineers for the successful evaluation of the performance of masonry towers under seismic loads. An in situ survey was performed to characterize the geometry of the structure and its constitutive material. All the collected information was introduced in a building information model, later used to generate different finite element models for the structural analyses. The global capacity of the structure was evaluated using three different models with different levels of complexity: the first simplified model is made of beam elements with cross-sections discretized in fibers; the second model is made of shell elements and uses a concrete damage plasticity model to describe the nonlinear masonry behavior; the third model adopts solid elements with a concrete smeared crack constitutive law. A preliminary eigen-frequency analysis is performed on the shell model to obtain some basic information about the structural behavior. Nonlinear static analyses were carried out for each model to understand the response of the tower under seismic loads, highlighting the main differences between the approaches. The behavior factor was evaluated on the basis of the analyses results and compared with the ones suggested by the Italian building code. The results showed that the towers do not satisfy the seismic demand required by the standards for all the considered models. Furthermore, the behavior factor calculated according to the Italian design code is overestimated, while the one evaluated by the simplified model is underestimated due to the neglection of the shear behavior. From all the analyzed configurations, the shell model resulted as a good compromise between reliable results and computation efficiency.
  • Publisher: Basel: MDPI AG
  • Language: English
  • Identifier: ISSN: 2076-3417
    EISSN: 2076-3417
    DOI: 10.3390/app122111254
  • Source: Directory of Open Access Scholarly Resources (ROAD)
    Directory of Open Access Journals
    ProQuest Central
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