Laboratory Experiment and Theory on Resistance of GRS Tsunami Barrier to Overflow Erosion

• NIHEI Yasuo

  Tokyo University of Science

• NAWANO Junro

  Shimizu Corporation

• YANAGISAWA Maimi

  Tokyo University of Science

• KAWABE Shohei

  Tokyo University of Science

• KIKUCHI Yoshiaki

  Tokyo University of Science

• TATSUOKA Fumio

  Tokyo University of Science

Bibliographic Information

Other Title

• GRS防潮堤の耐越流侵食性に関する実験的・理論的検討
• GRS ボウチョウテイ ノ タイエツリュウ シンショクセイ ニ カンスル ジッケンテキ ・ リロンテキ ケントウ

Abstract

We recently applied a geosynthetic-reinforced soil (GRS) technology to increase the resistance of tsunami barrier to an overflow erosion. In the present study, we performed a series of model tests in the laboratory to evaluate the resistance of previous and new tsunami barriers on the strength against the over-flowing tsunami. We examined dynamical balance of concrete panels covering on the crest and its outflow conditions. The test results indicated that the GRS seawall has a function of tsunami barrier that has a high resistance to erosion due to tsunami overflow. The length of geogrid layers required to prevent outflow of concrete panels was evaluated quantitatively under various tsunami heights.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 69 (2), I_986-I_990, 2013

  Japan Society of Civil Engineers

Keywords

• Tsunami barrier
• geosynthetic-reinforced soil
• Overflow
• Erosion

Details

• CRID: 1390282680297033344
• NII Article ID: 130004551235
• NII Book ID: AA12508551
• DOI: 10.2208/kaigan.69.i_986
• ISSN: 18838944
• ISSN: 18842399
• NDL BIB ID: 025019895
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025019895
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed