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http://dx.doi.org/10.5394/KINPR.2009.33.3.227

A Case Study on Settlement Promotion of a Large Size Open Caisson using Air-Jet an Method  

Jeong, Jin-Seob (Division of Civil, Environmental, and Urban Engineering, Wankwang University)
Lee, Jong-Cheon (Division of Civil, Environmental, and Urban Engineering, Wankwang University)
Kim, Hae-Woog (Hanyang Corp.)
Kim, Tae-Hyung (Division of Civil and Environmental Engineering, Korea Maritime University)
Publication Information
Journal of Navigation and Port Research / v.33, no.3, 2009 , pp. 227-233 More about this Journal
Abstract
This experimental study has been carried out to investigate the reduction in side friction of open caisson using air-jet method. For this study, the large size caisson having air-pockets was used. This caisson was used as substructure of bridge. By using air-jet method, settlement time was decreased and even settlement was reached to the depth which conventional methods could not be. We found that the side resistance decreases to less then half the expected value. In addition to these merits, the air-jet method can result in self-weight settlement without applying additional load. Also the open caisson damage caused by blasting can be prevented with this method.
Keywords
Open caisson; Air-jet method; Side skin friction; Settlement promotion;
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