Journal of the Japan Landslide Society
Online ISSN : 1882-0034
Print ISSN : 1348-3986
ISSN-L : 1348-3986
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Volume 43, Issue 2
Displaying 1-5 of 5 articles from this issue
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Original article
  • Finite element analysis of restraint piles and landslide triggered by groundwater
    Yasuo ISHII, Kazunori FUJISAWA, Yuichi NAKASHIMA, Senro KURAOKA
    2006 Volume 43 Issue 2 Pages 51-59
    Published: 2006
    Released on J-STAGE: August 03, 2007
    DOIhttps://doi.org/10.3313/jls.43.51
    JOURNAL FREE ACCESS
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    This paper presents study of finite element model for simulating restraining mechanism of piles installed in landslide that is triggered by groundwater. Finite element model was validated by successfully simulating measured deformation of piles in an actual landslide due to rise of groundwater. It was also found that a good agreement between the measured and simulated bending moment can be obtained, by taking average of modulus of deformation of earth measured in the range defined by a distance, 1/β, above and below the slip surface.
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Research note
  • An attempt to estimate the stress of caisson pile with Kaiser effect
    Tetsuro FUJIWARA, Takayuki KAWASE, Ryuichi HARA, Hiroyuki YOSHIMATSU, ...
    2006 Volume 43 Issue 2 Pages 60-67
    Published: 2006
    Released on J-STAGE: August 03, 2007
    DOIhttps://doi.org/10.3313/jls.43.60
    JOURNAL FREE ACCESS
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    In Washiodake landslide located in Nagasaki Prefecture, caisson piles are installed to prevent landslide movement.
    The stress of reinforcing rod in the caisson piles have been monitored by a strainmeter attached to the rod for 15 years since they were first installed.
    Recently, the strainmeter began submitting abnormal values due to the long-term usage.
    Therefore, it is necessary to estimate the stress applied in caisson piles by methods other than reinforcing rod strainmeter.
    First, precedent compression stress of a concrete core was evaluated using AE method (Kaiser effect). Meanwhile, current present stress state of a caisson pile was evaluated. According to the estimation, the values were within tolerance.
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Technical reports
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