To propose a method to detect pile damage, the relationships between pile cap vertical displacement and pile curvature were investigated by E-Defense shaking table tests and 3D FEM analysis. The following findings were obtained.
The pile damage causes dynamic upward displacement at the bottom center of structure with rocking motion. Therefore, the pile damage can be detected from a significant increase of the upward displacement against the overturning moment, and the degree of the damage can be estimated from the amount of the upward displacement.
