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http://dx.doi.org/10.7843/kgs.2016.32.10.67

A Field Study on the Constructability and Performance Evaluation of Waveform Micropile  

Jang, Young-Eun (Dept. of Geospace Engrg., Univ. of Science & Technology)
Han, Jin-Tae (Dept. of Geotechnical Engrg., Korea Institute of Civil Engrg. and Building Technology, UST)
Publication Information
Journal of the Korean Geotechnical Society / v.32, no.10, 2016 , pp. 67-79 More about this Journal
Abstract
Waveform micropile is an advanced construction method that combined the concept of conventional micropile with jet grouting method. This new form of micropile was developed to improve frictional resistance, which consequently leads to achieving higher bearing capacity and cost efficiency. Two field tests were conducted to examine the field applicability as well as to verify the effects of bearing capacity enhancement. In particular, waveform micropile construction using jet grouting method was performed to evaluate the viability of waveform micropile installation. After testing, the surrounding ground was excavated to check the accomplishment on the shape of waveform micropile. The result showed that waveform micropile can be installed by adjusting the grouting time and pressure. In the loading tests, waveform micropile's bearing capacity increased by 1.4 to 2.3 times depending on their shapes when compared with conventional micropile. Overall results clearly demonstrated that waveform micropile is an enhanced construction method that can improve bearing capacity.
Keywords
Micropile; Waveform micropile; Jet grouting method; Field test; Load-settlement characteristics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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