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http://dx.doi.org/10.7843/kgs.2018.34.11.107

Axial Bearing Characteristics of Tip-transformed PHC Piles through Field Tests  

Choi, Yongkyu (Dept. of Civil, Environmental and Urban Engrg., Kyungsung Univ.)
Kim, Myunghak (Dept. of Civil & Urban Engrg., Inje Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.34, no.11, 2018 , pp. 107-119 More about this Journal
Abstract
PHC piles, extension-plate attached PHC piles, and steel pipe attached PHC piles were installed in field test site. Axial compressive static load tests including load distribution test and Pile Driving Analyzer (after driving) were done on the tip-transformed PHC piles and the grouted tip-transformed PHC piles. Load-displacement curves of three different type of PHC piles, which are PHC pile (TP-1), extension plate attached PHC pile (TP-2) and steel pipe attached PHC pile (TP-3), showed almost the same behavior. Thus bearing capacity increase effect of the tip-transformed PHC piles was negligible. Share ratio of side resistance and end bearing resistance for PHC pile, extension plate attached PHC pile, and steel pipe attached PHC pile were 95.8% vs. 4.2%, 95.6% vs. 4.4%, and 97.8% vs. 2.2% respectively.
Keywords
PHC pile; Extension-plate attached PHC pile; Steel pipe attached PHC pile; Tip-transformed PHC pile; Load distribution; Axial compressive static pile load test; Side resistance; End bearing resistance;
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