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http://dx.doi.org/10.7843/kgs.2010.26.11.99

Back-calculation of Skin Friction Coefficient ($\alpha$, $\beta$) on a Single Pile by Long-Tenn Field Monitoring  

Ko, Jun-Young (Dept. of Civil Engrg., Yonsei Univ.)
Kim, Young-Ho (Dept. of Civil Engrg., Yonsei Univ.)
Choi, Yong-Kyu (Dept. of Civil Engrg., Kyungsung Univ.)
Jeong, Sang-Seom (Dept. of Civil Engrg., Yonsei Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.26, no.11, 2010 , pp. 99-110 More about this Journal
Abstract
A fundamental study of the pile-soil systems subjected to negative skin friction in soft soil was conducted using the long-term field measurements. The emphasis was on the identification of the magnitude and distribution of skin frictions ($\alpha$ and $\beta$ coefficients) in bitumen coated and uncoated piles. A skin friction coefficient of instrumented piles is back-calculated by varying degrees of consolidation (U) of surrounding soils. It is shown that the bitumen coated pile is capable of reducing the negative skin friction up to almost 50 to 90 percents. Through comparisons with the existing friction coefficient values ($\alpha$ and $\beta$ coefficients), the calculated coefficients are within the appropriate range, and thus we can suggest basic materials to estimate the realistic pile behavior in the short-term and long-term analysis.
Keywords
$\alpha$ and $\beta$ coefficient; Bitumen coating; Degree of consolidation; Long-term and short-term analysis; Negative skin friction;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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