Towards Earthquake Shields: A Numerical Investigation of Earthquake Shielding with Seismic Crystals

• 作者: Baris Baykant Alagoz Serkan Alagoz
• 来源期刊: 声学期刊(英文)
• 学科: 地球科学
• 关键词: EARTHQUAKE SHIELDING SEISMIC METAMATERIALS SEISMIC Wave Attenuation Band Gap Analysis
• 年，卷（期）: 2011,（3）
• 页码范围: 63-69
• 页数: 7页
• 分类号: P315

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.