近接加振源からの波動入射を受ける矩形剛構造物周辺の地表面振動

抄録

This paper deals with the harmonic response of the ground surface around a rigid structure with rectangular base resting on an elastic ground and being excited by the traveling wave from an adjacent source. The contour diagrams of the amplitude ratio defined as the ratio of displacement in the wave field with the structure to the one in the free wave field are examined. Though the screening effect of waves by the structure is similar to that by trenches in the range of high frequencies, this effect is caused by the interference of the wave in the free field and the one in the scattered field excited by vibrations of the structure.