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Field Load Test Results and Suggestion of Simple Settlement Estimation Method for Granular Compaction Piles  

Hwang Jung-Soon (Korea Railroad Technical Corporation)
Kim Hong-Taek (Dept. of Civil Engrg., Hongik Univ.)
Kim Jung-Ho (Dasan Consultant Co., Ltd.)
Lee Sang-Kyung (DONG-A Geological Engrg. Co., Ltd.)
Lee Hyung-Kyu (Dept. of Civil Engrg., Seoil College)
Publication Information
Journal of the Korean Geotechnical Society / v.21, no.3, 2005 , pp. 159-168 More about this Journal
Abstract
In the previous studies, settlement behaviors of granular compaction piles have generally been analyzed with an evaluation of the settlement reduction factor based on tile load-sharing ratio and the replacement ratio. In this approach, however, since the reinforced ground with granular compaction piles is simplified as the composite ground, only the difference of a relative vertical strength between piles and soils is taken into account without reflecting lateral behaviors of granular compaction piles. In the companion research paper, the method of estimating the settlement of granular compaction piles was proposed by synthetically considering a vertical strength of the ground, lateral behaviors of granular compaction piles, the strength of pile materials, a pile diameter, and an installation distance of the pile. In the presented study, to validate a propriety of the previously proposed method, large scale field load tests and three dimensional numerical analyses are performed. The results are analyzed in detail and compared with the predicted settlements by the proposed method. Finally, a simple method to estimate the settlement of granular compaction piles is suggested for an easy application of the practical design.
Keywords
Granular compaction pile; Lateral deformation; Settlement; Simple estimation procedure;
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