2008 四川地震（汶川地震）被災地における地盤・被災建物の微動測定

Abstract

The Ms 8.0 Wenchuan earthquake was one of the most destructive earthquakes that have occurred in China during the past 50 years. Masonry buildings are widely used and suffered very serious damage in the disastrous areas during the 2008 Wenchuan earthquake.In our study, response parameters and the S-wave velocity are adopted as the damage criteria to perform the quantitative building damage analysis of individual buildings.We found that for severely damaged buildings, the building system response frequency and average S-wave velocity traveling from the 1F to the top of the building will reduce to less than the half of that of the sound building.