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Mitigation of Transportation Induced Vibration Using Seismic Metamaterials.
| 题名： | Mitigation of Transportation Induced Vibration Using Seismic Metamaterials. |
| 作者： | Wang, L. |
| 关键词： | Noise vibration, Seismic metamaterials, Environmental Impact Assessment Project, Ground vibration, Numerical simulations |
| 摘要： | Transportation systems create new technical and environmental challenges including noise and Seismic, which affect ambient architectures, quality of life, and sustainability of the communities. Noise and vibration assessments become key elements of the environmental impact assessment process for mass transit projects, and noise and vibration are among the major concerns with regard to the effects of a transit project on the surrounding community. The research objective of this project was to design an efficient and economic method to mitigate the vibration induced by transportation activities. Specifically, periodically arranged piles in the ground called seismic metamaterials were used, which attenuated the vibration through the scattering and local resonance phenomena. To achieve this, a computational-experimental framework including integrated modeling, simulation, optimal design, and experimental validation was developed. The effectiveness of the proposed seismic metamaterials to mitigate transportation induced vibration through three-dimensional numerical simulations was examined. A method was developed for the design and optimization of the structured seismic metamaterials with the desired vibration mitigation capability in the targeted frequency range, with proper combination of constituent phases. Scaled experimental investigations were performed to validate the effectiveness of the proposed optimal seismic metamaterials. |
| 报告类型： | 科技报告 |
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