兵庫県南部地震の激震地に建つ高層建物の観測地震動

概要

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Accelerograms of 1995 Southern Hyogo Prefecture Earthquake were obtained at the high-rise building in the area of seismic intensity VII in JMA scale. Characteristics of these accelerograms are analyzed by means of maximum acceleration values, velocity response spectrum, Fourier amplitude spectrum ratio and running spectrum of power spectrum. The results are as follows. 1. At the basement of this building, the maximum value of NS component of the accelerogram is about three times as large as EW component. 2. The predominant period of the basement motion during this earthquake is 0.8-1.2 seconds. 3. This building was damaged in 4-5 seconds after secondary wave had arrived. 4. This damage changed the fundamental natural period from about 1 second to about 2 seconds.
一般社団法人日本建築学会の論文
1996-03-20