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Increasing the Resistance of Piles Subject to Cyclic Lateral Loading |
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| Authors: | J Peng B G Clarke M Rouainia |
| Affiliation: | 1Geotechnical Engineer, Cundall, Newcastle upon Tyne, NE3 3LU, United Kingdom; formerly Research Student, School of Civil Engineering and Geosciences, Univ. of Newcastle upon Tyne, Newcastle upon Tyne, NE1 7RU, United Kingdom. 2Professor of Civil Engineering Geotechnics, Univ. of Leeds, Leeds, LS2 9JT, United Kingdom (corresponding author). E-mail: b.g.clarke@leeds.ac.uk 3Lecturer in Geotechnical Engineering, School of Civil Engineering and Geosciences, Univ. of Newcastle upon Tyne, Newcastle upon Tyne, NE1 7RU, United Kingdom. |
| Abstract: | Small-scale tests were carried out on a monopile and fin piles to determine the effect the length of fins had upon the lateral displacement of cyclically loaded piles. A variety of loading conditions were applied to model piles in a dense sand by using a mechanical loading system. Ten thousand cycles were used in each test to represent 20 years of environmental loading on offshore structures. Variables included the magnitude, frequency, and direction of the load; the type of pile tip; and the length of the fins. The reduction in pile head displacement was used as a measure of the efficiency of the fins. The tests show that the fins reduced the lateral displacement by at least 50% after 10,000 cycles. |
| Keywords: | Piles Offshore structures Soil mechanics Sand (soil type) Lateral loads Cyclic tests Cyclic loads Laboratory tests Lateral displacement |