Title page for ETD etd-100698-115701


Type of Document Master's Thesis
Author Klusman, Craig Raymond
Author's Email Address cklusman@vt.edu
URN etd-100698-115701
Title Two-Dimensional Analysis of Stacked Geosynthetic Tubes
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
Plaut, Raymond H. Committee Chair
Cousins, Thomas E. Committee member
Holzer, Siegfried M. Committee member
Keywords
  • stacked tubes
  • two-dimensional analysis
  • slurry-mix
  • deformable foundation
  • Winkler foundation
  • geosynthetic tubes
  • geotextiles
  • levees
  • rigid foundation
Date of Defense 1998-11-02
Availability unrestricted
Abstract
Geosynthetic tubes filled with a slurry-mix are considered. The mix is usually dredged from a nearby area and pumped directly into the tubes. The tubes are used in a variety of applications including breakwaters, groins, and temporary levees. This thesis considers single and stacked geosynthetic tubes resting on rigid and deformable foundations.

A two-dimensional analysis is performed on the cross-section of a very long tube. The program Mathematica is utilized for the analysis. A few assumptions are made regarding the general behavior of the tube. The tube is assumed to be an inextensible membrane with no bending stiffness. To allow for a closed-form integral solution, it is assumed that no friction exists between the tubes and at the foundation.

A single tube, two stacked tubes, and a 2-1 formation are studied. Both rigid and deformable foundations are considered. The deformable foundation is modeled as a tensionless Winkler foundation with normal forces proportional to the downward deflection of the ground. An external water load on one side is also investigated for a single tube and a 2-1 formation, with rigid blocks to prevent the structure from sliding along the ground. Example cross-sectional profiles are given. Results from the analysis include structure height, circumferential tension, and ground deflections.

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