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<p>Industrial glued-laminated timber (GLT) structures offer a promising solution for sustainable, lightweight and high-performance design. Their low mass and flexibility make them sensitive to severe dynamic excitations, especially seismic events, requiring efficient vibration control strategies. This study investigates the effectiveness of tuned mass dampers (TMDs) on industrial GLT structures, explicitly considering soil-structure interaction (SSI), often underestimated in global dynamic response. Advanced three-dimensional finite element modelling with RFEM 6 allows realistic representation of GLT frames, inertia variations, foundation conditions and TMD integration. Three beam types: double-tapered beams with variable inertia, pitched cambered beams with variable height, and curved beams with constant inertia, combined with four GLT strength classes, are analysed under five representative seismic accelerograms. Configurations include the uncontrolled structure, the structure with a TMD, and the fully coupled structure-TMD-soil system. Results show that TMDs significantly reduce dynamic responses, with peak displacements and accelerations decreasing by over <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(60\% \)</EquationSource> </InlineEquation>, depending on beam type and tuning. The highest efficiency occurs for curved beams with constant inertia, due to favorable modal interaction with the TMD. SSI lengthens the fundamental period and redistributes dynamic forces but does not compromise TMD effectiveness when appropriately tuned. Beyond conventional kinematic indicators, comparative energy analysis reveals a reconfiguration of energy flows: the uncontrolled structure acts as an energy accumulator, while TMD integration transforms it into a predominantly dissipative system. This behaviour remains robust under SSI, confirming that TMD efficiency relies on global modification of energy balance rather than solely on amplitude reduction.</p>

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Dynamic and energy-based control of glued-laminated timber structures using tuned mass dampers with soil-structure interaction

  • 期刊论文

  • 发表日期：

    2026年7月1日

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  • Feko Ngnonguini Gaël,
  • Pelap François Beceau

摘要

Industrial glued-laminated timber (GLT) structures offer a promising solution for sustainable, lightweight and high-performance design. Their low mass and flexibility make them sensitive to severe dynamic excitations, especially seismic events, requiring efficient vibration control strategies. This study investigates the effectiveness of tuned mass dampers (TMDs) on industrial GLT structures, explicitly considering soil-structure interaction (SSI), often underestimated in global dynamic response. Advanced three-dimensional finite element modelling with RFEM 6 allows realistic representation of GLT frames, inertia variations, foundation conditions and TMD integration. Three beam types: double-tapered beams with variable inertia, pitched cambered beams with variable height, and curved beams with constant inertia, combined with four GLT strength classes, are analysed under five representative seismic accelerograms. Configurations include the uncontrolled structure, the structure with a TMD, and the fully coupled structure-TMD-soil system. Results show that TMDs significantly reduce dynamic responses, with peak displacements and accelerations decreasing by over \(60\% \) , depending on beam type and tuning. The highest efficiency occurs for curved beams with constant inertia, due to favorable modal interaction with the TMD. SSI lengthens the fundamental period and redistributes dynamic forces but does not compromise TMD effectiveness when appropriately tuned. Beyond conventional kinematic indicators, comparative energy analysis reveals a reconfiguration of energy flows: the uncontrolled structure acts as an energy accumulator, while TMD integration transforms it into a predominantly dissipative system. This behaviour remains robust under SSI, confirming that TMD efficiency relies on global modification of energy balance rather than solely on amplitude reduction.