The break-out behaviour of a suction anchor embedded in a granular soil.

Sahota, Baldev Singh

Abstract

The thesis describes an experimental investigation into the uplift behaviour of hemispherical suction anchors embedded in saturated sand. Anchor types are briefly discussed. Some existing theories related to plate-type anchors, for uplift foundations, and inverted cup-type surface suction anchors are reviewed. The experimental data and their interpretation are also discussed. The experimental work comprised flow measurement tests on model suction anchors, pull-out tests on the model anchors with or without applied suction pressure, pull-out tests on the anchor shaft with or without suction pressure and pull-out tests on the prototype suction anchor. The primary investigation is directed towards the 70 mm and 102 mm suction anchors. Anchor loads, anchor displacements, cavity suction pressures, pore pressures above and below the anchor, and anchor embedment depths were recorded. Suction anchors develop high pull-out loads primarily due to the applied suction pressure with embedment depth. The behaviour of an embedded-type suction anchor in saturated sand is governed by a large number of factors. These factors include depth of anchor embedment, anchor diameter, shaft diameter, filter area, sand density, and applied suction pressure. The author’s results are plotted on Vesic’s (1971) and, Das and Seeley’s (1975) graphs, for the correlation of the experimental test data. The plotted test data appeared to be in limited agreement, which is not unexpected because of the new parameter introduced by the applied suction pressure. The research investigation is concluded and suggestions are made for further experimental and analytical work.

Citation

SAHOTA, B.S. 1979. The break-out behaviour of a suction anchor embedded in a granular soil. Robert Gordon's Institute of Technology, MPhil thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1993204

• Thesis Type: Thesis
• Deposit Date: Oct 15, 2024
• Publicly Available Date: Oct 15, 2024
• DOI: https://doi.org/10.48526/rgu-wt-1993204
• Public URL: https://rgu-repository.worktribe.com/output/1993204
• Award Date: Jul 31, 1979