「地震超材料」是一種新型態的減震技術，與傳統隔減震技術相比，最大的差異在於地震超材料不需與建築物接觸，設置在周圍便能發揮功用。利用其在特定的頻率之下能夠藉由局部共振消能機制來達到減震的效果，近年來有許多學者紛紛研究其相關領域。而以橡膠包裹內含物之型態在地震超材料當中最為常見，本文為考量工程可行性，將內含物從常見之鋼材替換為混凝土，首先介紹局部共振消能機制，為了對應較低頻的地震頻率選擇負等效質量密度作為設計地震超材料的核心概念，接著運用有限元素軟體透過不同的邊界條件分別針對蘭姆波(Lamb wave)及雷利波(Rayleigh wave)設計兩種不同的單元結構，分析頻散圖並討論材料參數變化對於帶隙頻率範圍與帶隙寬度之影響，最後在半全域及全域模擬下建立實尺模型分別從時間域及頻率域討論地震超材料消能的結果，並驗證了帶隙確實能對特定頻率波傳之位移及振幅產生衰減作用。

Seismic metamaterials are a new type of isolation technology for seismic waves. Within certain designed frequency range, seismic waves can be attenuated or controlled. The subject has attracted many researchers to study in this field and explore the physical insights in the last decade. This artificially engineered material utilizes coupling interference effect between propagating waves and local resonances to prevent the propagation of waves at frequencies near resonances. The type of inclusions wrapped in rubber is the most common type of seismic metamaterials. In this thesis, the inclusions are replaced from common steel to concrete for engineering feasibility. Then, we utilize the finite element software COMSOL to design two different unit cells for Lamb wave and Rayleigh wave through different boundary conditions, and analyze the dispersion behavior. Lastly, real-scale models are considered to evaluate the energy dissipation effects of the seismic metamaterials, both from time and frequency domains. We found that the bandgap can indeed attenuate the displacement and amplitude of wave propagation within the designed interval of frequencies.

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