【摘 要】
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Nowadays, geotextile tubes hydraulically filled with dredged materials have been used in the application of cofferdam,sea reclamation and deepwater channel regu
【机 构】
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School of Naval Architecture
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Nowadays, geotextile tubes hydraulically filled with dredged materials have been used in the application of cofferdam,sea reclamation and deepwater channel regulation in China.The shape and mechanical behaviors during the process of filling, consolidation and stacked are one of the main problems concerned by designers and researchers. This paper uses the method of elliptic integrals to study the behaviors of filling and deduces the regressive formulas of shape features and circumferential tension. The results show that the proposal regressive formulas are only the function of pressure at bottom;they are very convenient and suitable for the filling design.When the filling materials are sandy, the shape and mechanical behaviors nearly remain during the process of consolidation. The behaviors of stacked geotextile tubes are very complex, because they are involved in the properties of the filling material,geotextile and foundation. Using the commercial finite element analysis program ABAQUS, this paper establishes the entire 2-D finite element load model to investigate, which include the part of filling material, geotextile and foundation. The numerical results suggest that the maximum circumferential tension varies with the properties of filling materials and foundations, whereas the largest tensile force occurs during the filling process.
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