UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Rocking damage-free steel column base with friction devices

Freddi, F; Dimopoulos, C; Karavasilis, TL; (2017) Rocking damage-free steel column base with friction devices. In: Proceedings of the 9th Hellenic National Conference of Steel Structures. Steel Structures Research Society (SSRS): Larisa, Greece. Green open access

[img]
Preview
Text
Freddi_et al. 2017_HCSS_Rocking damage-free steel column base with friction devices - Submitted.pdf - Accepted version

Download (728kB) | Preview

Abstract

Earthquake resilient steel frames, such as frames with self-centering connections or frames with passive energy dissipation devices, have been extensively studied during the past decade but little attention has been paid to their column bases. The paper presents a rocking damage-free steel column base, which uses post-tensioned (PT) high strength steel bars to control rocking behavior and friction devices to dissipate seismic energy. Contrary to conventional steel column bases, the rocking column base exhibits monotonic and cyclic moment-rotation behaviors that are easily described using simple analytical equations. Analytical equations are provided for different cases including yielding or loss of posttensioning in the PT bars and their efficiency is compared with numerical results from a three-dimensional non-linear finite element (FE) model in ABAQUS. Moreover, a simplified model is developed in OpenSees to evaluate how the use of the rocking column base affects the global behavior of a self-centering moment-resisting frame. Nonlinear dynamic analyses show that the rocking column base fully protects the first story columns from yielding and eliminate the first story residual story drift.

Type: Proceedings paper
Title: Rocking damage-free steel column base with friction devices
Event: 9th Hellenic National Conference of Steel Structures
Location: Larisa, Greece
Dates: 05 October 2017 - 07 October 2017
Open access status: An open access version is available from UCL Discovery
Publisher version: http://eeme.ntua.gr/9HNCSS/en/index.html
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
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/1575845
Downloads since deposit
52Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item