Abstract
To evaluate the lateral resistance of single piles for dolphins under repeated loads and large deformations, lateral loading tests were carried out for model piles embedded in sandy soil in a laboratory. The model piles were made of high-tensile steel plates 2500mm in length and 200mm in width. The conclusions of this study are as follows: 1) the test results of the relationship between soil reaction p and pile deflection y show that Kubo's formula (pocy0.5) is applicable to large deflection under the initial loading phase of each package of cycles. 2) the deflections and inclination angles of the pile increase with the loading cycles. Increasing ratios have linear relations to the logarithmic number of loading cycles when the magnitude of the load is kept constant.
