Failure of Reinforced Earth as Attacked by Typhoon No. 23 in 2004

Shibuya, Satoru; Kawaguchi, Takayuki; Chae, Jonggil

doi:10.3208/sandf.47.153

Cited by 24 publications

(2 citation statements)

References 2 publications

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“…The interpretation of the failure described above provides us with a crucially important lesson; i.e., regarding the GRS wall built on a valley, it is important not to allow the formation of aquifer at the rear side of the wall and also not to allow any seepage flow into the backfill. More details of this case study are found in the literature [21,22].…”

Section: Summary Of Case Historiesmentioning

confidence: 99%

Mitigation of Disasters by Earthquakes, Tsunamis, and Rains by Means of Geosynthetic-Reinforced Soil Retaining Walls and Embankments

Koseki

Shibuya

2014

Transp. Infrastruct. Geotech.

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The number of relevant case histories on the use of geosynthetic-reinforced soil (GRS) structures, including retaining walls and embankments, and their performance against large earthquake loads and heavy rainfalls is still limited. Their performance against tsunami is not well known, either. In view of this, in the first part, while focusing on the case histories during and after the March 11, 2011 East Japan Great Earthquake Disaster, Japan, performances of GRS structures against earthquake load and tsunami overflow are briefly summarized. Then, their application to rehabilitation works of the damaged structures is reported. In the second part, the development of Lshaped geosynthetic drain (LGD) is introduced, together with the relevant case history of rainfall-induced damage. In the LGD system, the water collected at vertically mounted geosynthetic drain sheet is drained through a horizontally installed drain. By having such an arrangement properly applicable to the drainage system, it is verified through a series of model tests and numerical analyses that the GRS structure is protected against any water invasion. It is also demonstrated that the use of steel slag in the construction of GRS structure is promising.

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Section: Summary Of Case Historiesmentioning

confidence: 99%

Mitigation of Disasters by Earthquakes, Tsunamis, and Rains by Means of Geosynthetic-Reinforced Soil Retaining Walls and Embankments

Koseki

Shibuya

2014

Transp. Infrastruct. Geotech.

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“…On the other hand, the single-surface shear test, which is used in practice owing to its simple testing device mechanism, easily reproduces K 0 states of soil elements before shear and reproduces simple shear states with appropriate shear box spacing (Kim et al 2012). Therefore, there have been reports (e.g., Shibuya et al, 2007;Kasama et al, 2018) on application of strength parameters obtained from direct shear tests to elucidate collapse mechanisms of geotechnical structures and natural slopes.…”

Section: Introductionmentioning

confidence: 99%

Geotechnical characteristics and seismic stability evaluation of pumice-fall deposits soil on collapse slope by the 2018 Hokkaido eastern Iburi earthquake

Kawajiri,

Watanabe,

Yamaguchi

et al. 2024

Nat Hazards

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The September 6, 2018, earthquake in the eastern part of Hokkaido, Japan, caused extensive slope failures in Atsuma-town, Hokkaido, Japan. In this study, the authors performed in situ investigations, including trenching and portable dynamic cone penetration tests, on weathered fallen pumice sediments, which are one of the causes of the slope failures. In addition, we performed direct box shear tests on undisturbed samples collected from an undisturbed area under various shear conditions to characterize mechanical properties of the soil. The parameters obtained from the mechanical tests were used to evaluate slope stability under normal and seismic conditions with an infinite-length slope model. The results showed that the slopes where seismic failures occurred had a fragile layer from the surface to a depth of approximately 1.5 m, which generally corresponded to the depth of failure. Weathered pumice deposits with extremely high-water content existed at the boundary between the weak layer and the basement layer, and their shear strength was velocity dependent. It has been shown that an infinite-length slope stability analysis can be performed by using mechanical parameters for which velocity dependence of horizontal acceleration and shear strength due to seismic motion are accounted for.

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Deformation Behavior of Mechanically Stabilized Earth Walls with Geocomposite Drainage Under Seepage Condition

Chinkulkijniwat

Yubonchit

2014

Landslide Science for a Safer Geoenvironment

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Failure of Reinforced Earth as Attacked by Typhoon No. 23 in 2004

Cited by 24 publications

References 2 publications

Mitigation of Disasters by Earthquakes, Tsunamis, and Rains by Means of Geosynthetic-Reinforced Soil Retaining Walls and Embankments

Mitigation of Disasters by Earthquakes, Tsunamis, and Rains by Means of Geosynthetic-Reinforced Soil Retaining Walls and Embankments

Geotechnical characteristics and seismic stability evaluation of pumice-fall deposits soil on collapse slope by the 2018 Hokkaido eastern Iburi earthquake

Deformation Behavior of Mechanically Stabilized Earth Walls with Geocomposite Drainage Under Seepage Condition

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