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RISDesign and Evaluation of Tuned Inerter-Based Dampers for the Seismic Control of MDOF Structures
Publisher: American Society of Civil Engineers
Abstract: The tuned viscous mass damper (TVMD) and tuned inerter damper (TID) are tuned inerter-based dampers (TIBDs) that can utilize amplified apparent mass and tuning effects. This study investigated the use of multiple TIBDs to ...
Exploration of the Nonlinear Effect of Pendulum Tuned Mass Dampers on Vibration Control
Publisher: ASCE
Abstract: Understanding the nonlinearity of pendulum tuned mass dampers (PTMDs) under large-amplitude vibration is important to enhance control performance. Here, the nonlinear effects of PTMDs on vibration control of a single-deg ...
Experimental and Numerical Study on the Aerodynamic Admittance of Twin-Box Bridge Decks in Sinusoidal Gusts and Continuous Turbulence
Publisher: ASCE
Abstract: Aerodynamic admittance functions (AAFs) of twin-box decks are particularly complex due to the presence of a central gap, so require the performance of dedicated studies to determine them. Two main approaches are available ...
Simplified Nonlinear Damping Force Formula for Rotary Eddy Current Dampers and Comparative Hazard Analysis under Seismic Excitation with Fluid Viscous Dampers
Publisher: ASCE
Abstract: Ensuring the robust performance of damping devices during intense vibrations, such as seismic excitation, is crucial for maintaining structural protection. Hazard analysis serves as an effective method for evaluating the ...
Bilateral-Plate Eddy Current Damping: Paradigm Shift for Enhancing Energy Dissipation in Vibration Control
Publisher: American Society of Civil Engineers
Abstract: Eddy current damping is widely applied in scenarios where high speeds or low damping are involved. However, due to its low energy dissipation density in traditional configurations, there has been a long-standing bottleneck ...
An Explicit Solution of Modal-Damping Ratios for Higher Modes of a Cable with an External Damper
Publisher: ASCE
Abstract: Design of external dampers for stay cables requires repetitive evaluation of damping ratios for target modes of cables under various damper parameters and installation positions, and explicit formulas with high accuracy ...
Control of a Pedestrian Bridge by a Damped Single-Sided Pounding Tuned Mass Damper: Modeling, Simulation, and Field Test
Publisher: American Society of Civil Engineers
Abstract: Long-span steel pedestrian bridges usually have the characteristics of high flexibility and low damping due to the usage of high-strength and light-weight materials. Therefore, they are extremely sensitive and prone to ...
Damping Capacity and Seismic Performance of a Torsional Metallic Damper Using a Displacement Amplification Mechanism
Publisher: ASCE
Abstract: Metallic dampers with plastic energy dissipation are often used in the seismic protection of civil structures. However, conventional metallic dampers cannot provide adequate energy dissipation capacity due to the small ...
Optimum Design of Pendulum Tuned Mass Dampers Considering Control Performance Degradation from Damper Connection
Publisher: ASCE
Abstract: Pendulum tuned mass dampers (PTMDs) are one of the most commonly used devices for high-rise structures to control large-amplitude vibrations due to dynamic excitations. In practice, the damper of PTMD usually connects the ...
Investigation of the Shear Lag Effect of an Innovative Steel Box Girder in Cable-Stayed Bridges: Experimental and Bar Simulation Method Analysis
Publisher: ASCE
Abstract: As an innovative steel box girder, the normal stress patterns in the top and bottom plates of a cantilever steel box girder are complex. However, the influence of external and internal struts on the shear lag effect is ...