Development of a Laboratory Test to Identify the Scour Potential of Soils at Piles Supporting Offshore Structures.
TEXAS UNIV AT AUSTIN GEOTECHNICAL ENGINEERING CENTER
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This report describes the development of a test to investigate the scour potential of soils at the interface of piles that support offshore structures. These soils are subjected to cyclic loading due to wave action. The test is called the Pile-Soil Scour Potential Test PSSP. The mechanism of scour around the pile-soil interface is discussed. Due to the complicated interactions between pile, soil, and fluid at the interface, this study is primarily directed toward an experimental approach. In addition to the use of the PSSP test, the existing pinhole test was used to study the scour potential of various soils. A series of PSSP tests were conducted for examining the scour resistance of soils. The influences of variables such as soil properties, loading frequency, pile diameter, and duration in the scour process were studied by use of the PSSP test. The most significant findings of these tests are analyzed. A method of predicting the scour potential is suggested and further studies are recommended to improve the method.
- Soil Mechanics