Tuned-mass-damper-inerter optimal design and performance assessment for multi-storey hysteretic buildings under seismic excitation
نویسندگان
چکیده
Abstract Inerter-based vibration absorbers (IVAs), such as the tuned-mass-damper-inerter (TMDI), have become popular in recent years for earthquake protection of building structures. Previous studies using linear structural models shown that IVAs can achieve enhanced suppression, but at expense increased control forces exerted from IVA to host structure. The authors recently developed a bi-objective design framework linearly behaving buildings balance between performance (drift/acceleration suppression) and forces. This paper extends multi-storey hysteretic/yielding structures under seismic excitation. Though proposed accommodate any type IVA, focus is herein on TMDI applications, with tuned-mass-damper (TMD) tuned-inerter-damper (TID) treated special cases TMDI. Earthquake hazard modeled through representative, design-level acceleration time-histories response IVA-equipped structure evaluated nonlinear response-history analysis. A high-fidelity finite element model (FEM) established accurately describe hysteretic behavior. To reduce computational burden, reduced order (ROM) based original FEM, by first second authors. ROM maintains accuracy FEM while enabling computationally efficient solution optimization problem. As an illustrative example, different placements along height non-linear benchmark 9-storey steel frame examined. ROM-based comparing FEM-based predictions across entire Pareto front resulting optimization. Then, designs associated predicted or are compared evaluate how explicit consideration nonlinearities, well degree behavior, impact efficiency.
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ژورنال
عنوان ژورنال: Bulletin of Earthquake Engineering
سال: 2021
ISSN: ['1573-1456', '1570-761X']
DOI: https://doi.org/10.1007/s10518-021-01236-4