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http://dx.doi.org/10.5762/KAIS.2013.14.11.5906

Evaluation of Bearing Capacity of Waveform Micropile by Numerical Analyses  

Han, Jin-Tae (Korea Institute of Constuction Technology)
Kim, Sung-Ryul (Dept. of Civil engineering, Dong-A University)
Jang, Young-Eun (Division of Geospace engineering, University of Science & Technology)
Lee, Seung-Hyun (Dept. of Cilvil engineering, Sunmoon University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.11, 2013 , pp. 5906-5914 More about this Journal
Abstract
Recently in Korea, the policy is being proceeded to build a intergenerational housing on artificial ground of railroad site for utilizing rental house. Due to narrow space of rail road site, suitable method have to be developed such as micropiles which is known as a method of a fast construction. However, If micropile is used as foundations for the super structure, construction cost is increases compared with other pile. Consequently, new concept micropile proposed to improve both bearing capacity and cost efficiency of general micropile. New concept micropile consists of waveform cement grout surrounding tread bar that formed by grouting the soil layer with jet grouting method as control the grout pressure and flow. The micropile with waveform is expected to decrease the construction cost by cut down pile length of general micropile. This paper examined the behavior of the new concept micropile with waveform subjected to axial load using two-dimensional axisymmetric numerical analyses method. According to the numerical result, there will cost effectiveness as the pile displacement decreased despite the length of waveform micropile is down about 5% from a general micropile under the same loading condition. Also, the effect of skin friction force which mobilized from the waveform of micropile appeared at relatively soft ground.
Keywords
Micropile; Jet grouting; Numerical analyses; Railroad site; Waveform;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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