Abstract
To investigate the attenuation under a clear ground condition, this paper describes the development of a centrifugal model test system, simulating the subway-induced vibration, experimental results, and comparisons between experimental observations and field measurements. It was found that the attenuation of subway-induced vibration in the ground becomes larger as frequency becomes higher. Bornitz’s formula is applied to estimate the attenuation and it was found that the values of material damping coefficient α are almost the same in the centrifuge acceleration level of 15 to 62.5G, which are consistent under 70Hz with those obtained by field measurements at 14 sites in and around the Tokyo area.
