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Title: Energy-factor-based damage-control evaluation of steel MRF systems with fuses
Authors: Ke, K
Yam, MCH 
Keywords: Damage-control
Energy factor
Evaluation approach
Singledegree-of-freedom system
Steel moment resisting frame system
Structural fuse
Issue Date: 2016
Publisher: Techno Press
Source: Steel and composite structures, 2016, v. 22, no. 3, p. 589-611 How to cite?
Journal: Steel and composite structures 
Abstract: The primary objectives of this research are to investigate the energy factor response of steel moment resisting frame (MRF) systems equipped with fuses subject to ground motions and to develop an energy-based evaluation approach for evaluating the damage-control behavior of the system. First, the energy factor of steel MRF systems with fuses below the resilience threshold is derived utilizing the energy balance equation considering bilinear oscillators with significant post-yielding stiffness ratio, and the effect of structural nonlinearity on the energy factor is investigated by conducting a parametric study covering a wide range of parameters. A practical transformation approach is also proposed to associate the energy factor of steel MRF systems with fuses with classic design spectra based on elasto-plastic systems. Then, the energy balance is extended to structural systems, and an energy-based procedure for damage-control evaluation is proposed and a damage-control index is also derived. The approach is then applied to two types of steel MRF systems with fuses to explore the applicability for quantifying the damagecontrol behavior. The rationality of the proposed approach and the accuracy for identifying the damage-control behavior are demonstrated by nonlinear static analyses and incremental dynamic analyses utilizing prototype structures.
ISSN: 1229-9367
EISSN: 1598-6233
DOI: 10.12989/scs.2016.22.3.589
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