Seismic vulnerability of existing buildings: non-invasive approach for dynamic behaviour assessment

Authors

  • Gianluca Acunzo
  • Michele Vicentino
  • Antonio Bottaro

Keywords:

Structural engineering, seismic risk, environmental vibration, operational modal analysis, BIM, 3D modeling

Abstract

This paper presents a brief overview of the concept of seismic risk, with particular regard to existing civil buildings. Given that the seismic risk can be expressed as a combination involving seismic hazard and seismic vulnerability, these aspects are both discussed, describing the factors that lead to the expected seismic input at the base of a building as well as the ones determining its vulnerability.

The way a building tends to react when it is subject to an external vibration is closely connected to its geometrical and mechanical features, which
determine what in structural engineering are commonly called "vibrational modes”. As a consequence, an accurate estimation of these modes is a
fundamental condition in order to assess the structural response under seismic action. Several experimental techniques aimed at the identification
of the vibrational modes for existing buildings and the way in which such parameters can be used in the vulnerability assessment field are described
in the present work.

References

Acunzo, G., Fiorini, N., Mori, F., Spina, D., (2018), Modal mass estimation from ambient vibrations measurement: A method for civil buildings, Mechanical Systems and Signal Processing 98C, 580-593

Acunzo, G., Gabriele, S., Spina, D., Valente, C., (2014), MuDI: a multilevel damage identification platform, Proceedings of the 12th International Conference on Computational Structures Technology (CST2014), Naples, Italy, paper 123.

DiCarlo A., Shapiro V., and Paoluzzi A., Linear Algebraic Representation for Topological Structures, Computer-Aided Design, Volume 46, Issue 1, January 2014, Pages 269-274

Marino, E., Spini, F., Paoluzzi, A., Salvati, D., Vadalà , C., Bottaro, A., Vicentino, M. (2017), Modeling Semantics for Building Deconstruction, Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2017), Porto, Portugal, 274 - 281

Norme Tecniche per le Costruzioni - Approvate con Decreto Ministeriale 17 gennaio 2018

Ranieri, G., Fabbrocino, Operational Modal Analysis of Civil Engineering Structures: An Introduction and Guide for Applications, Springer,

Berlin (2014)

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Published

2018-10-11

How to Cite

Acunzo, G., Vicentino, M., & Bottaro, A. (2018). Seismic vulnerability of existing buildings: non-invasive approach for dynamic behaviour assessment. GEOmedia, 22(3). Retrieved from https://ojs.mediageo.it/index.php/GEOmedia/article/view/1565

Issue

Vol. 22 No. 3 (2018): GEOMEDIA 3-2018

Section

REPORT

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