PROBLEMS AND INVESTIGATIONS IN CONSTRUCTION OF NEW-KITAKYUSHU AIRPORT ON RECLAIMED LAND BY DREDGED CLAY

Abstract

The New-Kitakyushu Airport is constructed on the man-made island reclaimed by dredged clay. In this paper, several problems on the reclamation by dredged clay and on the construction of the airport on such a reclaimed land are extracted. The prediction method for the volume change of reclaimed layer, the design of vertical drain satisfying requirements of runway, the countermeasure for differential settlement and the control system of settlement during the construction are investigated. A major conclusion is that the initial condition for the design of vertical drain in the rapid reclamation can be estimated by the proposed analysis of reclamation process with the consolidation parameters modified by the monitoring results.