Stability Analysis of Geotextile Bag Dehydrated Soil Dike

摘要

The geotextile bag dehydrated soil is used to construct dikes for land reclamation in Tianjin New Harbor, China. This paper introduces the method to build a dike for hydraulic filling. The soil for filling the geotextile bags is tested in wave trench; the stress developed during construction is calculated by establishing a numerical model and compared with the tensile strength of the geotextile; the stability and settlement of the dike are estimated by performing centrifuge tests. Analyzing results show that the cohesionless silt with IP less than 10 is suitable for filling the geotextile bags and the geotextile bag dehydrated soil consolidate very quickly even under the action of wave force. The peak tensile stress developed in the geotextile will be less than the tensile strength of this material. Centrifuge test results shows that the designed dike will be stable and the settlement of dike will be less than the design requirement.