eprintid: 10195607
rev_number: 10
eprint_status: archive
userid: 699
dir: disk0/10/19/56/07
datestamp: 2024-08-09 09:43:39
lastmod: 2024-10-25 13:55:25
status_changed: 2024-08-09 09:43:39
type: proceedings_section
metadata_visibility: show
sword_depositor: 699
creators_name: Lad, Devang
creators_name: Freddi, Fabio
creators_name: Ghosh, Jayadipta
title: Influence of atmospheric corrosivity on the seismic fragility of low-code steel frame structures
ispublished: pub
divisions: UCL
divisions: B04
divisions: F44
keywords: Existing steel frame, Atmospheric corrosion, Corrosivity Categories, Local engineering demand parameters, Fragility curves
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: Low-code steel moment-resisting frames (pre-Northridge) are characterised by high seismic vulnerability due to their reduced ductility capacity.
Moreover, these structures are exposed to atmospheric corrosion deterioration
due to environmental corrosive agents. Corrosion deterioration leads to section
mass loss, stiffness degradation, and loss of energy dissipation capacity, among
others. Thus, based on the corrosive category, old steel structures could experience considerable variations in their seismic performance. The present study examines the effect of different corrosivity categories on the seismic vulnerability
of steel frames. A non-seismically designed three-storey moment-resisting frame
is selected for case-study purposes and exposed to increasing corrosivity categories (C3, C4, C5, and CX) as per ISO 9223: 2012. As per ISO 9224:2012, atmospheric corrosion is assessed considering a 50-year ageing time and uniform corrosion. The seismic performance of the pristine and ageing steel frames is evaluated through Incremental Dynamic Analyses (IDAs) considering a suite of 43
ground motion records to account for the record-to-record variability. The seismic performance under different exposure categories is evaluated by monitoring
local and global engineering demand parameters (EDPs), allowing the development of seismic fragility functions at components- and system-levels.
date: 2024-06-24
date_type: published
publisher: International Society for Structural Health Monitoring of Intelligent Infrastructure (ISHMII)
official_url: https://www.symposium.it/en/events/2024/iconrem-2024/
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2303567
lyricists_name: Lad, Devang
lyricists_id: DLADX31
actors_name: Lad, Devang
actors_id: DLADX31
actors_role: owner
full_text_status: public
pres_type: paper
series: International Conference on Resilience, Earthquake Engineering and Structural Health Monitoring (ICONREM)
volume: 3
place_of_pub: Turin, Italy
event_title: 3rd International Conference on Resilience, Earthquake Engineering and Structural Health Monitoring (ICONREM 2024)
event_location: Turin
event_dates: 24 Jun 2024 - 27 Jun 2024
book_title: Proceedings of the 3rd International Conference on Resilience, Earthquake Engineering and Structural Health Monitoring (ICONREM 2024)
citation:        Lad, Devang;    Freddi, Fabio;    Ghosh, Jayadipta;      (2024)    Influence of atmospheric corrosivity on the seismic fragility of low-code steel frame structures.                     In:  Proceedings of the 3rd International Conference on Resilience, Earthquake Engineering and Structural Health Monitoring (ICONREM 2024).    International Society for Structural Health Monitoring of Intelligent Infrastructure (ISHMII): Turin, Italy.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10195607/1/Lad_et_al_ICONREM2024_Final.pdf