Estimation of vibration characteristics of Kuzuryu River bank and subsurface structures based on microtremor observations

• KOJIMA Keisuke

  University of Fukui

• ITO Masaki

  University of Fukui

• MIZUNO Tomohiro

  Japan Pile Corporation

Bibliographic Information

Other Title

• 常時微動観測に基づく九頭竜川堤防の振動特性と地下構造の推定

Abstract

The Fukui Earthquake wreaked havoc on the Kuzuryu River levee. In this study, we carried out microtremor observations densely on the Kuzuryu River bank. An extended SPAC analysis was applied to the collected array observation data to estimate Rayleigh wave phase velocities. Transfer functions between the top and toe of the dike and H/V spectra of the levee crowns were calculated to determine the predominant periods of the embankment-ground systems. S-wave velocity structures were back-analyzed based on the H/V spectra. It was confirmed that the earthquake damages on the embankment were harmonized with the back-analyzed structures.

Journal

• Journal of Japan Association for Earthquake Engineering

  Journal of Japan Association for Earthquake Engineering 19 (5), 5_12-5_20, 2019

  JAPAN ASSOCIATION FOR EARTHQUAKE ENGINEERING

Keywords

• Fukui Earthquake
• Kuzuryu River bank
• Microtremor
• Array observation
• H/V spectra

Details

• CRID: 1390564227314245376
• NII Article ID: 130007719050
• DOI: 10.5610/jaee.19.5_12
• ISSN: 18846246
• Web Site: https://www.jstage.jst.go.jp/article/jaee/19/5/19_5_12/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed