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http://dx.doi.org/10.12814/jkgss.2017.16.4.001

Analysis of Axial Capacity and Constructability of Helical Pile with Inner Cone Penetration  

Lee, Jun-Ho (Dept of Civil and Environmental Engineering, Incheon National Univ.)
Lee, Kicheol (Dept of Civil and Environmental Engineering, Incheon National Univ.)
Kim, Dongwook (Dept of Civil and Environmental Engineering, Incheon National Univ.)
Publication Information
Journal of the Korean Geosynthetics Society / v.16, no.4, 2017 , pp. 1-11 More about this Journal
Abstract
In this study, 1/6 small-scale model tests of helical piles were conducted to evaluate their installation time and ultimate capacities. Model sand layers were constructed using sand pluviating method to produce uniform soil relative density. For installation of different helical piles varying locations (vertical center-to-center spacings of 50 mm and 150 mm) of helix plates, two different rotation speeds of 15 rpm and 30 rpm were implemented. Cone penetration equipment was installed within the hallow section of the helical pile to increase ultimate capacity of helical pile and to evaluate soil properties of plugged soils and soils below pile tip after installation of the piles. Based on the test results, the most fasted installation was possible under the condition of "rotation speed of 30 rpm and center-to-center spacing of 50 mm", and the highest ultimate capacity was mobilized under the condition of "rotation speed of 30 rpm and center-to-center spacing of 150 mm with cone penetration implementation."
Keywords
Helical pile; Inner cone penetration; Sand pluviator; Ultimate load; Installation time;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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