Abstract
The plug-in steel cylinder was widely used for man-made island construction as the bulkhead wall in nearshore soft soil area. In order to maintain the dry working condition inside the bulkhead wall, the high-pressure rotary jet formed sealing curtain should be built up under the steel cylinder and the connecter between steel cylinders. During the dewatering process inside of the bulkhead wall, a water pressure difference between the inside and the outside of the bulkhead acts on the steel cylinders. This water pressure difference threatens the stability of steel cylinders, even leads to the crash of the steel cylinders when the steel cylinder was installed on the high-permeability soil layers. This paper analyzes the seepage field and the displacements of the cylinder during the dewatering process according to data from an engineering case, and highlights the effect of high-pressure rotary jet formed sealing curtain on maintaining the stability of cylinder.
Published Version
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