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http://dx.doi.org/10.7843/kgs.2015.31.2.13

Bearing Characteristics of Micropile-raft by Failure Mode of Soil  

Hwang, Tae-Hyun (Dept. of Civil Engrg., Konkuk Univ.)
Shin, Jong-Ho (Dept. of Civil Engrg., Konkuk Univ.)
Huh, In-Goo (Geotechnial & Structure Construction Co., Ltd.)
Kwon, Oh-Yeob (Dept. of Civil Engrg., Konkuk Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.31, no.2, 2015 , pp. 13-25 More about this Journal
Abstract
With the increasing usages of micropile, several researchers have been studying the bearing characteristics of micropile or micropile-raft system. But most cases of research were focused on the bearing capacity of micropile-raft system on sand layer. And it was not considered that the bearing capacity of micropile-raft system was affected by the failure mode of soil and pile installation conditions. Thereby this study conducted the numerical analysis to estimate the bearing capacity of micropile-raft system on sand or silt layer with different shear failure mode. It was found that the bearing capacity of micropile-raft system installed in positive or negative angle was larger than that of the system installed in vertical angle, in the case of the sand layer undergoing the general shear failure. In the case of silt layer undergoing the punching shear failure, the bearing capacity of micropile-raft system installed only in negative angle was larger than that installed in vertical or positive angle. And the bearing capacity of foundation system in positive angle was similar to the vertical micropile-raft system.
Keywords
Micropile-raft; Failure mode of soil; Length ratio of pile; Installation angle of pile; Numerical Analysis;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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