地震所帶來的危害為人類社會長久重視之問題，而當中地震超材料作為一種新型態的隔減震手段引起學者們高度的興趣。透過材料內之單元結構於外部擾動下的特殊動力特性，將使超材料展現負的等效質量、負的柏松比或負的剪力模數等自然界中罕見的物理性質。而有別於過去的隔減震結構，超材料可僅設置於保護區外圍而不用直接與結構物接觸，且其中的局部共振機制更有望使其設計尺寸低於約1/10個波長，因此將有利於屏蔽低頻且長波長之地震波。而本文的研究目標即是以局部共振機制為基礎的地震超材料。為驗證其可行性，過程將透過允許輸入水平剪力波的振動台系統與自製之共振單元以探討單元結構於砂土層中的動力行為，並採振幅降低因子ARF值評估其減震效益。而除實體物理模型試驗外，研究中亦使用數值軟體PLAXIS 2D進行相關分析。模擬中不僅探討與試驗相應之單元結構模型，亦完成局部共振機制於雷利波波場中的有關研究，從而探討各類單元形式、尺寸與材料參數對於其屏蔽效益之影響，並期望以此為往後地震超材料的實際應用提供各影響因子之效應評估。

The devastating impact of earthquakes on human society has long been a significant concern. In recent years, seismic metamaterials have attracted high interest as a new form of vibration isolation and mitigation. By the unique dynamic properties of the unit cells under external disturbances, seismic metamaterials exhibit rare physical characteristics such as negative effective mass, negative Poisson's ratio, or negative shear modulus.Unlike traditional seismic isolation structures, seismic metamaterials can be placed only at the periphery of the protected area without direct contact with the structure. Additionally, the local resonance mechanism within these materials allows for design sizes smaller than approximately 1/10 of the wavelength, making them particularly effective in attenuating low-frequency and long-wavelength seismic waves.To verify their feasibility, experimental investigations will be conducted using a shaking table system that allows for horizontal shear wave input, along with a resonator to examine the dynamic behavior of the unit cell in sandy soil layers.The effectiveness of vibration reduction will be evaluated using the amplitude reduction factor (ARF). In addition to physical model experiments, numerical analysis using PLAXIS 2D software will be employed. The simulations will not only explore the corresponding unit cell model in relation to the experiment but also investigate the local resonance mechanism in Rayleigh wave fields. This will enable an assessment of the influence of various unit forms, sizes, and material parameters on the shielding effectiveness. The findings are expected to provide preliminary insights and recommendations for the practical application of seismic metamaterials by evaluating the effects of different influencing factors.

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