Earthquake resilient steel frames, such as Self-Centring Moment Resisting Frames (SC-MRFs) or Concentrically Braced Frames (SC-CBFs), have been widely studied during the past few years while little attention has been paid to the development of self-centring solutions based on Eccentrically Braced Frames (EBFs). The present paper investigates a possible solution for damage-free self-centring EBFs relying on the use of a damage-free self-centring devices as seismic link. The device uses post-tensioned high-strength steel bars with disks springs to control the self-centring behaviour and friction devices to dissipate seismic energy. A four-storey EBF is designed according to the Eurocode 8 and the third storey of the structure is extracted to investigate the behaviour of a sub-assembly upgraded with the proposed seismic device. A 3D nonlinear finite element model of the device is developed in ABAQUS to evaluate the local behaviour. The results of the conventional and upgraded systems are compared, showing the effectiveness of the solution.

Design and Analysis of Damage-Free Self-centring Links for Seismic-Resilient Eccentrically Braced Frames

Latour M.;Rizzano G.
2022

Abstract

Earthquake resilient steel frames, such as Self-Centring Moment Resisting Frames (SC-MRFs) or Concentrically Braced Frames (SC-CBFs), have been widely studied during the past few years while little attention has been paid to the development of self-centring solutions based on Eccentrically Braced Frames (EBFs). The present paper investigates a possible solution for damage-free self-centring EBFs relying on the use of a damage-free self-centring devices as seismic link. The device uses post-tensioned high-strength steel bars with disks springs to control the self-centring behaviour and friction devices to dissipate seismic energy. A four-storey EBF is designed according to the Eurocode 8 and the third storey of the structure is extracted to investigate the behaviour of a sub-assembly upgraded with the proposed seismic device. A 3D nonlinear finite element model of the device is developed in ABAQUS to evaluate the local behaviour. The results of the conventional and upgraded systems are compared, showing the effectiveness of the solution.
978-3-031-03810-5
978-3-031-03811-2
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4806805
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact