Effect of footing shape on the settlement of rectangular and I-shaped rocking shallow foundations
نویسندگان
چکیده
Cumulative settlement is one of the primary potential detrimental aspects of rocking foundations. It has been well documented that if the factor of safety against bearing failure is not very large (e.g., less than five or so), settlement can become significant. A series of footings of different shapes were subject to lateral slow cyclic loading on the centrifuge to study the effect of shape on footing settlement. Previous studies have characterized the shape of rectangular footings by the ratio of width to length of the loaded area required to support the vertical load. For the present study, the I-shaped footings are characterized by their missing area ratio and the normalized flange or web thickness. A systematic relationship between normalized footing settlements and footing shape was observed. Narrow footings produced more settlement than wide footings under the same rotation demand.
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