Estimation on collapse mechanism of Aso-bridge during the 2016 Kumamoto earthquakes using ASI-Gauss code
Estimation on collapse mechanism of Aso-bridge during the 2016 Kumamoto earthquakes using ASI-Gauss code
复制标题
利用ASI-Gauss代码估算2016年熊本地震期间阿苏桥的倒塌机制
DOI：
10.11532/structcivil.66a.59
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
浅井光輝，原倖平，磯部大吾郎，田中聖三
中科院分区：
文献类型：
--
作者：
山田芳則;牛尾知雄;佐藤晋介;山田芳則;浅井光輝，原倖平，磯部大吾郎，田中聖三
在2016年熊本地震中，许多桥梁和基础设施被地震波破坏，在本研究中，我们关注的是主震后立即倒塌的麻生桥。地震后发生了巨大的滑坡，与滑坡位置相同的阿索大桥完全倒塌。有几篇报道指出，造成这次坍塌的主要因素有四个：(1)地震波，(2)地面变形，(3)桥梁上滑坡材料荷载的增加，(4)地下室地面坍塌。本文采用梁单元有限元方法中的ASI-Gauss程序对阿索大桥的倒塌进行了数值分析。然后，讨论了影响阿索大桥倒塌的主要因素。
Many bridges and infrastrucutures were damaged by the seismic waves in the 2016 Kumamoto Earthquakes, and in this research, we focused on the Aso-bridge which collapsed immediately after the main shock. A huge landslide happened after the earthquakes and Aso-bridge, which was constructed in the same location of the landslide, totally collapsed. There are a couple of reports that four main factors might have contributed to this collapse;(1) seismic wave,(2) ground deformation,(3) landslide material load increase on the bridge,(4) basement ground collapse. In this paper, a numerical analysis of the Aso-Bridge collapse was conducted using the ASI-Gauss code, which is one of the finite element method utilizing beam elements. Then, we have discussed the main factor of the Aso-bridge collapse.