Vibration Experiment of Vehicle for Seismic Observation Using Automobiles

Abstract

A vibration experiment of a vehicle was conducted for the purpose of investigating the response characteristics of the vehicle and examining applicability of automobiles to the seismic observation. A method to estimate the instrumental seismic intensity using the acceleration record on the vehicle was also considered. As a result, it was revealed that the response characteristics of the vehicle can be approximated as a second-order oscillatory element with a natural frequency of 2 to 3 Hz, and that the instrumental seismic intensity of the ground motion can be estimated within an error of 0.5 using the response acceleration record.