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EFFECT OF LONG-TERM STATIC LOAD ON THE L-SHAPED RETAINING WALL INSTALLED WITH THINNED WOODEN PILE AND FIBER OPTIC GEOGRID USING BOTDR METHOD
Session: Insitu Testing and Instrumentation II / Essais in situ et instrumentation II
Suman Manandhar, Institute of Lowland and Marine Research, Saga University (Japan)
Kazuyuki Miyazoe, Kyushu Kohzoh Sekkei Co.Ltd. (Japan)
Satoshi Fukuoka, Asahi Techno Consultants Co. Ltd. (Japan)
Takenori Hino, Institute of Lowland and Marine Research, Saga University (Japan)
Dennes T. Bergado , Asian Institute of Technology (Thailand)
Tatsuya Koumoto, Saga University, Geopolymer Research Laboratory (Japan)
In this study, the effect of long-term static load was observed on the pile head together with straining of geogrid using optical fiber carried with an actual vehicle dump truck on the constructed L-shaped retaining wall using BOTDR method. The change in strain measured immediate after the construction was found to be decreased after four months due to stress relaxation on the geogrid. The strain under static live load was checked to a virtual rear portion of the L-shaped retaining wall and at the central portion of the bottom panel width of L-shaped retaining wall. The straining on geogrid is found to be relatively small and can bear the load of the dump truck to some extent.
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