Passive Structure Control of Tall RC Core-Glulam Frame Hybrid Buildings

September 7, 2026

Tuned Mass Damper (TMD), as a classical passive control device, has been widely employed in structural vibration control of tall buildings. Nonetheless, they fundamentally rely on the linear tuning principle, requiring precise matching with the target frequency of the structure. This significantly limits their applicability when facing time-varying frequencies or broad-band complex loading scenarios. Nonlinear Energy Sink (NES) is a representative nonlinear control device that leverages the synergistic interaction of nonlinear stiffness and nonlinear damping. It achieves Targeted Energy Transfer (TET) and sustained vibration absorption over a broad frequency range without the need for precise tuning, demonstrating superior robustness and adaptability. Meanwhile, Reinforced Concrete (RC) Core with Glued Laminated Timber (Glulam) Frame Hybrid Structure (RC Core-Glulam Frame Hybrid Structure) offers advantages in aesthetics, prefabrication, and environmental sustainability. Furthermore, the inherent high strength-to-weight ratio of timber can further amplify the vibration mitigation benefits of nonlinear control strategies. This study proposes a novel NES-based nonlinear control scheme tailored for tall RC core-Glulam Frame Hybrid Structure, in comparison with the conventional TMD control strategy. The scheme fully exploits the residual spaces within the structure to deploy nonlinear control devices, and its superiority over the traditional TMD approach is validated through theoretical derivation and numerical simulation.

Authors in the community:

• 

  S

  Shuheng Li

  ist1115688

Supervisors of this institution:

• 

  M

  Mário Manuel Paisana dos Santos Lopes

  ist12055

civil-engineering - Civil engineering

por - Portuguese

Instituto Superior Técnico