Mechanical analysis of stacked geosynthetic tubes with external frictional interface

作者：Liu Xin; Lei Guohui^*; Zhang Kunyong

来源：Journal of Central South University(Science and Technology), 2015, 46(11): 4281-4291.

DOI：10.11817/j.issn.1672-7207.2015.11.041

• Filling pressures
• Frictional interface
• Geosynthetic tube
• Mechanical analysis
• Mechanical response
• Shape
• Stacked structure
• Tension

Three symmetrically stacked tubes, placed on a rigid horizontal foundation and filled with either water or slurry, were analyzed. Two stacked forms, with two underlying tubes in mutual contact and in isolation, were considered. The frictions at the tube-tube and the tube-foundation interfaces were also considered. Analytical solutions were derived for the tension, friction and shape of tubes. Investigations were carried out on the mechanical responses of tubes to the internal filling pressure and the stacked distance between two underlying tubes. Moreover, the stability of stacked tubes was addressed. The results show that for a specified stacked distance, there is a critical internal filling pressure for achieving lower frictions at the tube-tube and the tube-foundation interfaces. Under a specified internal filling pressure, there is a critical stacked distance for achieving the minimum tensions and frictions, which corresponds to the most stable stacked structure.

• 出版日期2015
• 单位河海大学