Author(s)

A. Niousha, M. Motosaka

Abstract

Ground motion and structural vibration reduction using periodic wave barrier as a passive isolation A. Niousha, M. Motosaka Disaster Control Research Center, Graduate School of Engineering, Tohoku University, Japan Abstract Seismic waves, machine foundation, traffic or blasting generates waves that adversely affect nearby structures and the operation of sensitive equipment. Various countermeasures have been advised to reduce the ground-trans- mitted vibration, conventionally the installation of trench, base isolation or active mass driver. In this study, the periodic wave barrier is introduced as a passive isolation to reduce the ground transmitted wave and the structural vibration. A one-dimensional soil model is first investigated for incident shear wave. The propagation and the attenuation zone of the periodic element are discussed. The effect of barrier's numbering, contrast, width and spacing are parametrically studied. A more realistic two-dimensional model is made based o

Keywords