Wave-induced failure of embankments subjected to cyclic loadings and its evaluation

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560597
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Muroran Institute of Technology
• Principal Investigator: KAWAMURA Shima 室蘭工業大学, 工学(系)研究科(研究院), 准教授 (90258707)
• Co-Investigator(Kenkyū-buntansha): MIURA Seiichi 北海道大学, 工学研究院, 名誉教授 (00091504)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 盛土 / 地震動 / 波の侵食 / 模型実験 / 斜面安定

Outline of Final Research Achievements

This study aims at clarifying wave erosion mechanism and failure of volcanic embankments subjected to cyclic loadings. A series of model tests was performed on volcanic embankments using a wave paddle system; especially the effects of initial water content and compaction condition of the embankments on wave erosion mechanisms were described. Based on the test results, the development process of erosion and the evaluation of slope stability of volcanic embankment due to wave erosion were discussed.The main conclusions are as follows; (1) Mechanical behavior of model embankments is changed depending on slope conditions; especially slope failure of volcanic embankments varies with the difference in the initial water content.(2) Volcanic embankments having more than the degree of compaction Dc=90% have a resistance on slope failure due to wave erosion. (3) Estimation of shear strain after cyclic loadings such as seismic loadings is important for stability of volcanic embankments.

Free Research Field

地盤工学