Towards Earthquake Shields: A Numerical Investigation of Earthquake Shielding with Seismic Crystals
Towards Earthquake Shields: A Numerical Investigation of Earthquake Shielding with Seismic Crystals作者机构：不详
出 版 物：《Open Journal of Acoustics》 (声学期刊（英文）)
年 卷 期：2011年第1卷第3期
页 面：63-69页
学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学]
主 题：Earthquake Shielding Seismic Metamaterials Seismic Wave Attenuation Band Gap Analysis
摘 要：Authors numerically demonstrate that the seismic surface waves from an earthquake can be attenuated by a seismic crystal structure constructed on the ground. In the study, seismic crystals with a lattice constant of kilometer are investigated in the aspect of band gaps (Stop band), and some design considerations for earthquake shielding are discussed for various crystal configurations in a theoretical manner. Authors observed in their FDTD based 2D wave simulation results that the proposed earthquake shield can provide a decreasing in magnitude of surface seismic waves. Such attenuation of seismic waves might reduce the damage in an earthquake.
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