APPARATUSES FOR CONSTRUCTING DISPLACEMENT AGGREGATE PIERS

摘要

Apparatuses for constructing displacement aggregate piers are disclosed. In one example, a mandrel is provided comprising a tamper head that has cutting teeth on the leading edge thereof. In another example, hydrojet nozzles are provided within one or more of the cutting teeth of the tamper head. In yet another example, the mandrel comprises grout tubes (or grout injection lines) and/or grout inspection lines. In yet another example, the mandrel and/or tamper head can comprise cutting teeth, hydrojet nozzles, grout tubes (or grout injection lines), grout inspection lines, and any combinations thereof.

主权项

1. A system for constructing aggregate piers comprising a mandrel, the mandrel comprising an upper feed tube portion, a tamper head, and a passage extending therethrough for feeding aggregate through the feed tube to the tamper head, wherein the tamper head comprises a plurality of cutting teeth on a lower edge of the tamper head opposite the feed tube and surrounding a perimeter of the tamper head edge.