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Vertical Cutting Edge Forces Measured During the Sinking of Pneumatic Caisson

2012; Taylor & Francis; Volume: 30; Issue: 2 Linguagem: Inglês

10.1080/1064119x.2011.586013

1521-0618

Geu-Guwen Yea, Tae-Hyung Kim,

Infrastructure Maintenance and Monitoring

Abstract During the construction of the pneumatic caissons supporting the towers of the Youngjong Grand Bridge in South Korea, the cutting edge of the Incheon side caisson was equipped with a number of strategically positioned reaction force gauges to measure vertical cutting edge contact pressures and to assess the contact pressure distribution developed during caisson sinking through a range of ground conditions. The magnitude of the contact pressure and its distribution under a foundation varies depending principally upon the physical properties of the founding material, foundation dimensions and the rigidity of the foundation construction. This requires the designer to make an engineering judgment based on the results of the site investigation and the rigidity of the foundation. Keywords: caisson sinkingcontact pressureengineering judgmentpneumatic caissonreaction force gauge Acknowledgments We would like to thank Prof. Yang Shaoli of Norwegian Geotechnical Institute (NGI) for her helpful advice and syntax modification. We are grateful for insightful reviewers for significant suggestions. This work was also supported by the Chinese Offshore Investigation and Assessment (No. 908-02-03-03).