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http://dx.doi.org/10.7843/kgs.2007.23.6.23

Study on Development of the Bi-directional High Pressure Pile Load Test(BDH PLT) and Its Application  

Lee, Chung-Sook (Dongsung Engrg., Co. Ltd.)
Lee, Min-Hee (Dept. of Civil & Environmental Engrg., Kyungsung Univ.)
Kim, Sang-Il (Korea Bi-directional Pile Load Test Association)
Choi, Yong-Kyu (Dept. of Civil & Environmental Engrg., Kyungsung Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.23, no.6, 2007 , pp. 23-36 More about this Journal
Abstract
To overcome the limits of the static pile load test for large diameter drilled shafts, bi-directional low pressure pile load test (BDL PLT) has been used but this test method containes some problems that has not been solved basically. That is, BDL PLT has some problems: difficulty in jack (or cell) arrangement for large test capacity, void remain inside jack (or cell) due to the unrecovery of piston after test etc. In this study, bi-directional double-acting high pressure pile load test (BDH PLT W/DOJ) was developed and confirmed for a in-situ large diameter drilled shaft. At present, test specification of bi-directional pile load test (BDPLT) is being made, and severed main issues (such as, test kinds, test capacity, necessity of use of double-acting and attention of application to service pile) will be contained at the specification.
Keywords
Double-acting oil jack; Bi-directional high pressure pile load test (BDH PLT); Large diameter drilled shafts; Specification of BD PLT;
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