地中構造物・管路の地震応答と液状化

[CS12-30] A damage analysis on telecommunication conduit in Mashiki due to the Kumamoto Earthquake

*奥津 大¹、伊藤 陽¹、庄司 学²、鈴木 崇伸³ (1. 日本電信電話株式会社、2. 筑波大学、3. 東洋大学)

Keywords:Kumamoto Earthquake , telecommunication conduit, surface ruptures

The 2016 Kumamoto Earthquake was a major earthquake with a maximum seismic intensity of 7, and many houses and lifeline were damaged. Many communication conduits that house underground communication cables have been damaged, mostly on old standard joints with low earthquake resistance, and repair work is still being carried out. In this study, relation between communication conduit damage and the position of the surface earthquake fault in the Mashiki area where the strong motion was observed are described.