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Efficiency of alternative intensity measures for the seismic assessment of monolithic free-standing columns

Pappas, A; Sextos, A; da Porto, F; Modena, C; (2017) Efficiency of alternative intensity measures for the seismic assessment of monolithic free-standing columns. Bulletin of Earthquake Engineering , 15 (4) pp. 1635-1659. 10.1007/s10518-016-0035-0. Green open access

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Abstract

This paper deals with the dynamic response of a free-standing ancient column in the Roman Agora of Thessaloniki, Greece as a means to shed more light on the complex behaviour of rocking bodies under seismic excitation. Numerical analyses utilizing discrete element method were carried out with the use of multiple seismic records selected based on the disaggregation of the seismic hazard for the region of interest. To identify their impact on structural performance, earthquake Intensity Measures, such as Peak Ground Acceleration and Peak Ground Velocity are examined for the case of a column that sustained no visible permanent deformations during the Ms = 6.5 Thessaloniki earthquake of 1978. The analysis revealed a weak correlation of PGA and PGV with the response results and a significant influence of the mean frequency (fm) of the seismic motion. No coupling was found between the maximum displacement of the top during the oscillation and the permanent post-seismic deformations. The complementarity of both earthquake Intensity Measures in the structural vulnerability assessment is also depicted.

Type: Article
Title: Efficiency of alternative intensity measures for the seismic assessment of monolithic free-standing columns
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s10518-016-0035-0
Publisher version: http://dx.doi.org/10.1007/s10518-016-0035-0
Language: English
Additional information: © The Author(s) 2016. This article is published with open access at Springerlink.com
Keywords: Science & Technology, Technology, Physical Sciences, Engineering, Geological, Geosciences, Multidisciplinary, Engineering, Geology, Ancient monuments, Free standing column, Rocking, Discrete element method (DEM), Seismic vulnerability, Intensity measures, Ground Motions, Classical Columns, Element Method, Rigid Blocks, Selection, Acceleration, Software, Behavior, Rocking, Records
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10044524
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