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http://dx.doi.org/10.7855/IJHE.2012.14.3.041

Characteristics of Negative Skin Friction of Foundation Pile and Construction Management by Experimental Field Test  

Hong, Seok-Woo (동의대학교 공과대학 토목공학과)
Publication Information
International Journal of Highway Engineering / v.14, no.3, 2012 , pp. 41-48 More about this Journal
Abstract
In this study the negative skin friction test of foundation pile was performed in order to monitor the negative skin frictional force acting on the steel pipe pile installed in soft soil. The monitored frictional stresses obtained from the long-term loading test. Through the long-term frictional stress monitoring test, the economical period for the construction of the superstructure was determined. The following conclusion were derived from this study: (1) In soft soil, negative skin friction increases with the increase in the rate of settlement. (2) In the friction relationship graph, the period where there is no frictional strain increase is verified and the time for the construction of the superstructure is determined. (3) The pile loading test was performed and the negative skin friction was compared with the test results. It was determined that the negative skin friction after driving was larger than the negative skin friction obtained from the loading test. 15 days after the construction, the monitored value was similar with the theoretical data. (4) It was determined that even during the occurrence of negative skin friction an economical construction management can be performed using the long-term monitoring method of negative skin friction.
Keywords
negative skin frictional force; experimental field test; long-term monitoring method; economical construction management;
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