eprintid: 10069016
rev_number: 29
eprint_status: archive
userid: 608
dir: disk0/10/06/90/16
datestamp: 2019-02-27 12:26:39
lastmod: 2021-09-19 23:04:41
status_changed: 2019-02-27 12:26:39
type: proceedings_section
metadata_visibility: show
creators_name: Minas, S
creators_name: Sousa, L
creators_name: Galasso, C
creators_name: Rossetto, T
title: Sensitivity of Probabilistic Regional Seismic Loss to Hazard and Vulnerability Modelling Options
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F44
keywords: Seismic risk; Fragility curves; Seismic hazard; FRACAS; Portfolio loss
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: This paper investigates the sensitivity of probabilistic regional seismic loss assessment of reinforced concrete
(RC) buildings to different ground motion intensity and vulnerability modelling options. To this aim, several
variations of the loss assessment framework are tested to determine their effect in the resultant damage
prediction, and the consequent loss estimation. Specifically, this study systematically assesses the sensitivity of
losses to (1) ground motion intensity characterization (through selection of different types of intensity measures -
IMs); and (2) assumptions in structural analysis (simplified nonlinear static-based procedures versus advanced
nonlinear time-history analysis).
A synthetic portfolio of RC structures located in Avellino, Southern Italy, is chosen as a case-study. A sitespecific hazard analysis is carried out, allowing the calculation of ground shaking footprints for different types of
IMs, including conventional and advanced IM representations. Three regular 4-storey, 4-bay RC bare frame
buildings, corresponding to three distinct vulnerability classes, compose the exposure database. Seismic fragility
and vulnerability functions are derived for the considered building typologies, and finally, economic earthquake
losses are estimated for all tested ground motion IMs and fragility derivation methods.
Results from this study highlight that the choice of the analysis method type has a significant impact in the
overall loss estimation, as the proposed (more advanced) procedure is capable of capturing the building response
and corresponding damage states more accurately. The choice of the IM type is also of high importance within
the loss estimation process, due to the ability of advanced IMs to capture more information than standard IM,
e.g. in terms of spectral shape.
date: 2018
date_type: published
publisher: EAEE
official_url: http://papers.16ecee.org/files/ECEE%20Minas%20etal.pdf
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1633457
lyricists_name: Galasso, Carmine
lyricists_name: Minas, Stylianos
lyricists_name: Rossetto, Tiziana
lyricists_id: CGALA33
lyricists_id: SMINA45
lyricists_id: TROSS20
actors_name: Rossetto, Tiziana
actors_id: TROSS20
actors_role: owner
full_text_status: public
publication: Proceedings of the 16th European Conference on Earthquake Engineering
place_of_pub: Thessaloniki, Greece
pagerange: 11276
event_title: 16th European Conference on Earthquake Engineering
event_location: Thessaloniki, Greece
event_dates: 18 June 2018 - 21 June 2018
institution: 16th European Conference on Earthquake Engineering
book_title: Proceedings of the 16th European conference on Earthquake Engineering 2018
citation:        Minas, S;    Sousa, L;    Galasso, C;    Rossetto, T;      (2018)    Sensitivity of Probabilistic Regional Seismic Loss to Hazard and Vulnerability Modelling Options.                     In:  Proceedings of the 16th European conference on Earthquake Engineering 2018.  (pp. p. 11276).  EAEE: Thessaloniki, Greece.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10069016/1/ECEE%20Minas%20etal.pdf