Abstract
In order to investigate the lateral resistance behavior of a pile with enlarged base and the geometrical influence of enlarged base on lateral resistance behavior, lateral loading model tests of piles with enlarged base were performed in dense sand in the laboratory. The measured data and phenomenon are discussed. As a result, the following conclutions have been obtained: (1) Due to enlarged base, the lateral resistance of pile increased about 8-24%, and varied with the enlarged base angle. (2) According to the analysis of test results, at the depth x below the surface, the soil reaction p (x, y) per unit length of the pile can be expressed by the equation of p(x, y)=kx0.5y0.75.
