Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Low-damage steel structures for enhanced life-cycle seismic performance
 
research article

Low-damage steel structures for enhanced life-cycle seismic performance

Lignos, Dimitrios G.  
•
Paronesso, Martina  
May 2, 2022
Stahlbau

During an earthquake, steel frame buildings with bracings are prone to high absolute floor acceleration demands, thereby causing damage to acceleration-sensitive non-structural elements and building content. Inelastic deformations in steel bracings and/or their end connections often necessitate the use of capacity design rules to meet the life safety requirements established by seismic design standards. This paper presents an alternative steel frame building configuration where energy dissipation is mostly achieved through friction dampers acting as dissipative connectors between the floor diaphragms and the steel frame(s) with bracings. The dampers consist of friction pads made from composite materials which are not susceptible to galvanic corrosion. Physical experiments suggest that the friction pads are effective in dissipating the seismic energy through friction. Nonlinear response history analyses of a prototype 6-storey steel frame building featuring friction dampers as dissipative floor connectors demonstrate that a) higher mode effects are mitigated; b) capacity-design in the steel frame(s) with bracings is not imperative to ensure a uniform lateral drift distribution; and c) the seismic response variability in storey-based engineering demand parameters is reduced remarkably compared with that of the conventional counterpart with rigid diaphragms. All-in-all, the alternative building configuration has high potential to minimize earthquake-induced repairs over a building's service life.

  • Details
  • Metrics
Type
research article
DOI
10.1002/stab.202200023
Web of Science ID

WOS:000789595400001

Author(s)
Lignos, Dimitrios G.  
Paronesso, Martina  
Date Issued

2022-05-02

Publisher

ERNST & SOHN

Published in
Stahlbau
Volume

91

Issue

5

Start page

315

End page

325

Subjects

Construction & Building Technology

•

Engineering, Civil

•

Construction & Building Technology

•

Engineering

•

friction dampers

•

steel structures

•

seismic resilience

•

dissipative floor connectors

•

steel frames with bracings

•

composite materials

•

response variability

•

connect floor system

•

deformable connection

•

rubber bearings

•

buildings

•

frames

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
RESSLAB  
GIS-GE  
Available on Infoscience
May 23, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/187979
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés