デジタル強震計の加速度記録を積分して得られる変位の信頼性について

概要

論文の詳細を見る
This paper presents the reconstruction method of a displacement wave form from the accelerogram. The method is based on a relation between the real part of Fourier transform, of a causal time series and the original time series, and is based on the following fact. When a high-pass filter is applied to a reasonable function with a zerofrequency singularity, the spectral energy removed from the real part of Fourier transform is relatively insignificant compared to that removed from the complex part. Therefore, the presented analysis results in a less distorted, displacement waveform. In order to demonstrate the validity of the integration method, vibration test of digital strong-motion accelerographs (SSA-1 and SAMTAC-17) are carried out by three dimensional shaking table, and integrated displacements is compared with the corresponding shaking table displacements.
社団法人日本建築学会の論文
1991-01-30