Journal of the Japan Landslide Society
Online ISSN : 1882-0034
Print ISSN : 1348-3986
ISSN-L : 1348-3986
Research note
An attempt to estimate the stress of caisson pile with Kaiser effect
Tetsuro FUJIWARATakayuki KAWASERyuichi HARAHiroyuki YOSHIMATSUKazunori SATOH
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JOURNAL FREE ACCESS

2006 Volume 43 Issue 2 Pages 60-67

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Abstract
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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© 2006 The Japan Landslide Society
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