研究者業績

平井 敬

ヒライ タカシ  (Takashi Hirai)

基本情報

所属
兵庫県立大学 大学院減災復興政策研究科 准教授
学位
博士(工学)(2013年3月 名古屋大学)

研究者番号
00708373
J-GLOBAL ID
201301062435714990
researchmap会員ID
7000006358

外部リンク

研究キーワード

 3

論文

 34
  • Kentaro Imai, Kentaro Nakai, Takashi Hirai, Toshihiro Noda, Nobuo Arai, Shunji Iwama, Hiroyuki Iwase, Toshitaka Baba
    Earthquake Spectra 2024年3月26日  査読有り
    Development of coastal areas in Japan for various land uses since the 1960s has contributed to industrial upgrades and improved the efficiency of transportation networks. However, there are concerns about the vulnerability of developments on alluvial plains and reclaimed lands to geological events, like ground subsidence due to liquefaction during large earthquakes. Realistic assessment of earthquake and tsunami hazards and evaluation of possible countermeasures require accurate estimation of the amount of subsidence that can be expected from liquefaction at coastal and riverside sites supporting various structures. In this study, to evaluate the amount a river embankment structure might be expected to settle as a result of strong motion from an assumed Nankai Trough great earthquake, we conducted a numerical simulation using the soil–water coupled finite deformation analysis code GEOASIA. We then investigated the effect of the estimated embankment subsidence on tsunami inundation, which was simulated by using nonlinear shallow-water equations and a grid spacing as fine as 3.3 m. The influence of urban structures on the inundated area was taken into account by using a structure-embedded elevation model (SEM). The results showed that subsidence of river embankments and the collapse of parapet walls on top of them would increase both the depth and area of inundation caused by a tsunami triggered by a Nankai Trough scenario earthquake. Our findings underscore the importance of evaluating not only earthquake resistance but also vulnerability of coastal and riverside structures to strong motion in tsunami hazard analyses. Furthermore, the importance of tsunami inundation analysis using a SEM for predicting the behavior of tsunami flotsam in urban areas was demonstrated.
  • 小谷菜央, 平井敬, 永野康行
    減災復興学研究 1 52-56 2024年3月  
  • 前川浩基, 永野康行, 平井敬, 荘田悠平, 杉本和也, 吉田泰基, 中山善夫, 石原健司, 加藤直樹
    減災復興学研究 1 47-51 2024年3月  
  • 松原郁洋, 平井敬, 永野康行
    減災復興学研究 1 42-46 2024年3月  
  • 北村昌卓, 平井敬
    減災復興学研究 1 37-41 2024年3月  最終著者

MISC

 3

書籍等出版物

 11

講演・口頭発表等

 30

所属学協会

 8

Works(作品等)

 7

共同研究・競争的資金等の研究課題

 17