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Permanent Strains of Piles in Sand due to Cyclic Lateral Loads |
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| Authors: | San-Shyan Lin Jen-Cheng Liao |
| Affiliation: | 1Member, ASCE
21Assoc. Prof., Dept. of Harb. and River Engrg., Taiwan Ocean Univ., Keelung, Taiwan 20224, R.O.C. 32Grad. Student, Dept. of Harb. and River Engrg., Taiwan Ocean Univ., Keelung, Taiwan, R.O.C. |
| Abstract: | The strain superposition concept, proposed for ballast study, is applied here to evaluate strain accumulation for laterally loaded piles in sand. It is shown that the soil properties, types of pile installation, cyclic loading types, pile embedded length, and pile∕soil relative stiffness ratio are important factors that influence the pile behavior under mixed lateral loads. These factors are quantified by means of a degradation factor, t, which is derived from the results of 20 full-scale pile load tests and then verified using 6 additional full-scale pile load tests. |
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