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http://dx.doi.org/10.7843/kgs.2017.33.3.17

Evaluation of Spudcan Penetration/Extraction Behavior in Uniform Sand and Clay  

Yoo, Jin-Kwon (Dept. of Civil and Environmental Engrg., Hanyang Univ.)
Park, Duhee (Dept. of Civil and Environmental Engrg., Hanyang Univ.)
Kang, Jaemo (Dept. of Civil and Environmental Engrg., Hanyang Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.33, no.3, 2017 , pp. 17-28 More about this Journal
Abstract
We performed laboratory spudcan penetration and extraction tests considering various geometries. Jumunjin sand, representative standard sand in South Korea, and kaolinite were used for uniform sand and clay layers, respectively. The measured vertical bearing and pull-out capacities were compared to empirical equations for shallow foundations. The results showed good agreement between measured and calculated bearing capacity from laboratory test and previous study at shallow depths. The effect of spudcan geometry is shown to depend on site condition. The influence of a sharp spigot is not significant in clays. The slope of the spudcan surface is shown to influence the pull-out capacity. The characteristics of spudcan penetration and extraction behavior considering various geometries can be a useful reference for determining spudcan geometries.
Keywords
Spudcan; Penetration/extraction test; Spudcan geometry; Bearing capacity;
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