@article{ref1,
title="Analysis of the Aso-Bridge landslide during the 2016 Kumamoto earthquakes in Japan",
journal="Bulletin of engineering geology and the environment",
year="2017",
author="Hung, Ching and Lin, Guan-Wei and Syu, Huei-Sian and Chen, Chi-Wen and Yen, Hsin-Yi",
volume="77",
number="4",
pages="1439-1449",
abstract="In 2016, earthquakes occurred beneath Kumamoto City, Kumamoto Prefecture in the Kyushu Region of Japan and generated numerous landslides around the city, and among those triggered in this disastrous event, the Aso-Bridge landslide was the largest. For the purpose of examining the behavior of this large-scale landslide during the main shock of the Kumamoto earthquakes, we conducted a study involving simplified sliding block concepts and finite element codes, and conclude that (a) the slope of the Aso-Bridge landslide (about 710 m high and with a dip angle of 33 °) is marginally stable in the absence of earthquakes; (b) the failure surface obtained using finite element codes is in satisfactory agreement with that of the actual failure surface; ©) our results reveal that the initiation-time of the Aso-Bridge landslide lay between 18.45 and 21 s based on three indications: (I) the directional tendency of the first apparent displacement, (ii) evidential factor of safety (FS) values <1, and (iii) Newmark's displacement; and (d) the combination of an internal friction angle of 35 ° and a cohesion value of 80 kPa led to a failure surface closest to that observed in the field. The study demonstrates that we were able to apply the simplified sliding concepts and finite element codes to analyze the Aso-Bridge landslide in reasonable agreement with the actual event.<p /> <p>Language: en</p>",
language="en",
issn="1435-9529",
doi="10.1007/s10064-017-1103-7",
url="http://dx.doi.org/10.1007/s10064-017-1103-7"
}