Uplift Capacity of Shallow Offshore Foundations

by V. Rapoport, McClelland Engineers Inc, Houston, TX, USA,
A. G. Young, McClelland Engineers Inc, Houston, TX, USA,

Document Type: Proceeding Paper

Part of: Uplift Behavior of Anchor Foundations in Soil


Soil failure under upward loading is investigated by experimental laboratory tests. The problem of uplift capacity is considered in terms of effective stresses in soil skeleton and pore pressures. The mechanism of breakout is considered for different types of soil. Based on this approach and experiments, a procedure is developed for estimating uplift capacity. The general validity of the procedure is illustrated by analyzing case histories including full-scale tests in clay and suction anchor tests in sand. The procedure allows one to determine the influence of various factors on foundation uplift capacity such as time and type of loading; soil properties; object size, weight, etc. A brief review of literature on the subject is presented.

Subject Headings: Soil analysis | Soil tests | Offshore structures | Effective stress | Soil stress | Soil pressure | Soil suction | Load bearing capacity

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