Novel adaptive steel hysteretic damper for an enhanced seismic structural performance
METADATA ONLY
Loading...
Author / Producer
Date
2021-09
Publication Type
Conference Paper
ETH Bibliography
yes
Citations
Altmetric
METADATA ONLY
Data
Rights / License
Abstract
Traditional Hysteretic Dampers (HDs) are installed in buildings to enhance their seismic performance by increasing the effective stiffness and damping and are usually designed to guarantee the structural safety for severe Ultimate Limit State (ULS) seismic events. As a negative consequence, only minimal damping is provided during weak but more frequent Serviceability Limit State (SLS) earthquakes since HDs mainly operate in their elastic regime. This can cause high Peak Floor Accelerations (PFAs) that are detrimental for sensitive non-structural components (NSCs), like electric network, elevators, and computers, whose integrity is crucial in high-technological buildings (e.g. hospitals, and emergency centers). In order to improve this unacceptable situation, a novel Adaptive Hysteretic Damper (AHD) was developed by the authors. The AHD can modulate its effective damping and stiffness to its actual deformation (i.e. PGA level) leading to: (i) reduced PFAs and enhanced building response to minor SLS earthquakes; (ii) not impaired structural safety under severe ULS events. The AHD force-displacement characteristics are experimentally assessed and nonlinear time-history analyses are carried out on a case-study structure to demonstrate the enhanced seismic performances compared to common HDs.
Permanent link
Publication status
published
External links
Editor
Book title
EUROSTEEL 2021: Sheffield - Steel's Coming Home
Journal / series
Volume
4 (2-4)
Pages / Article No.
2008 - 2012
Publisher
Ernst & Sohn
Event
9th European Conference on Steel and Composite Structures (Eurosteel 2021)
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Adaptive; Hysteretic damper; Seismic performance; Serviceability limit state; Ultimate limit state; Non-structural components
Organisational unit
09660 - Taras, Andreas / Taras, Andreas