長方形基礎の Dynamical Ground Compliance (その2) ―基盤上に弾性層のある場合―

Abstract

At the first step to investigate the dynamical properties of the ground surroundingstructures which is considered as a stratified medium, we try to obtain, in this paper, the analytical and numerical expressions of "Dynamical Ground Compliance" about anelastic stratun over a semi-infinite rigid medium, using the method based on the three-di-mensional elastic wave propagation theory as in the previous paper. The distinguishedcharacters different from the case of a semi-infinite elastic medium are pointed out asfollows (1) there are three kinds of resonant frequency which include the naturalfrequencies of equivalent elastic rod with the same length as the depth of a stratum, (2) the diffusive energy is extremely small or zero in the range of low frequency.