| 공기분사공법을 이용한 초대형 Open Caisson의 침하촉진에 대한 사례연구 |
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정진섭, 이종천, 김해욱, 김태형 |
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| A Case Study on Settlement Promotion of a Large Size Open Caisson using Air-Jet an Method |
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Jin-Seob Jeong, Jong-Cheon Lee, Hae-Woog Kim, Tae-Hyung Kim |
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| Abstract |
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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. |
| Key Words:
Open caisson;Air-jet method;Side skin friction;Settlement promotion |
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