Geoscience Reference
In-Depth Information
14
Geosynthetic Reinforcement in the
Mitigation of Pipeline Flotation
Yoshiyuki Mohri
National Research Institute of Agriculture Engineering,
Tsukuba, Japan
Toshinori Kawabata
Kobe University, Kobe, Japan
Hoe I. Ling
Columbia University, New York, New York, U.S.A.
ABSTRACT
This chapter describes a series of experiments where geosynthetic reinforcement
was used with the pipeline buried at a shallow depth. The geosynthetic was used
to confine the materials around the pipe. It was observed that the resistance to
flotation increases with the additional resistance offered by the overburden
weight when the geogrid confines the gravels in place. A simple force
equilibrium equation between the overburden weight and buoyancy is suggested
for design.
1 INTRODUCTION
The geosynthetic reinforcements are being used effectively to tensile reinforce
soil structures, such as foundations and slopes (Koerner, 1998). The mechanism
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