長周期地震動に対する大阪府域に立地する建物の累積損傷

概要

論文の詳細を見る
The objective of this paper is to investigate the input energy characteristics to buildings and the tendency of building damage in Osaka during the coming big inter-plate earthquake. The estimated ground motions for the Nankai and the Tonankai earthquakes by Tsurugi, Sekiguchi and Kamae are used for the calculation of the total input energy and response of buildings. As a result, the following conclusions are obtained. 1) Predominant period of Osaka basin is about 2 to 3 second. Therefore, the cumulative damage of 20 to 30-storied buildings is estimated to be large. 2) The damage can be larger when the Nankai and the Tonankai earthquakes occur simultaneously, and the damage can be changed when either the Nankai earthquake or the Tonankai earthquake occurs with a delay of a few seconds. 3) Without seismic response analysis, the method for predicting easily the cumulative inelastic deformation of building is presented.
2008-05-30