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http://dx.doi.org/10.7843/kgs.2007.23.5.131

Pile and Ground Responses during Driving of a Long PHC Pile in Deep Soft Clay  

Kim, Sung-Ryul (Dept. of Civil Eng., Dong-A Univ.)
Dung, N.T. (Dept. of Civil Eng., Dong-A Univ.)
Chung, Sung-Gyo (Dept. of Civil Eng., Dong-A Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.23, no.5, 2007 , pp. 131-141 More about this Journal
Abstract
Because pile behavior is governed by geotechnical characteristics of surrounding soils, it is therefore necessary to monitor ground responses during pile driving and analyze the relation between the behaviors of pile and ground. In this research, the 57 m long PHC pile was driven into deep soft clay in the Nakdong River estuary area. During and after the pile driving, the ground responses and the residual load of pile have been monitored for about a year, by using piezometers, inclinometers, level posts for surface settlement, and strain gauges in piles etc. As the results, the residual load by the negative skin friction along the pile increased with the dissipation of the excess pore pressure, which was developed by pile driving and reclamation. About 30% of the maximum residual load developed due to the dissipation of the increased excess pore pressure during the driving. It is thus emphasized that most piles driven in clay deposits need to be designed by considering negative skin friction along the pile.
Keywords
Ground response; Negative Skin friction; PHC pile; Pile driving; Residual load; Soft clay;
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Times Cited By KSCI : 1  (Citation Analysis)
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