Method for forming a pile isolation void

摘要

A method of forming a pile isolation void including forming a foundation pile having an enlarged cross-section within a specific localized section and driving the foundation pile a desired distance into the earth so as to form a pile isolation void directly above the enlarged cross-section. The enlarged cross-section can be located at the bottom of the foundation pile or along the length of the foundation pile. The pile isolation void is an annular void extending around the foundation pile above the enlarged cross-section. This pile isolation void can be filled with a material, such as liquid, gel, or a solid material different than the material of the pile or of the earth. The enlarged cross-section can be a collar placed upon the foundation pile, or integrally formed with the foundation pile.