A STUDY ON DYNAMIC CHARACTERISTICS BASED ON MICROTREMOR MEASUREMENTS OF MIDDLE-RISE REINFORCED CONCRETE STRUCTURE

Abstract

In this paper, vibration characteristics of 43 middle-rise reinforced concrete buildings located in Kyoto city were investigated based on microtremor measurements. The buildings can be divided to three types by judging from the structural specifications. The vibration characteristics of soil around the objective buildings were also investigated. As the influences of soil-structure interaction were evident, we used a model including swaying and rocking behavior of soil in the analysis. The natural frequencies of the three-type buildings were compared, and their statistical properties were evaluated.