# US 10,767,333 B2 · Construction method for foundation pile

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- Number: US 10,767,333 B2
- Document ID: US10767333B2
- Status: Granted
- Kind: B2
- Application number: 14/437,057
- Filed: 2012-11-08
- Published: 2015-10-01
- Granted: 2020-09-08
- Earliest claimed: 2012-11-08
- Assignees: Asahi Engineering Co., Ltd.; Ae Japan Co., Ltd.
- Applicants: Asahi Engineering Co., Ltd.; Ae Japan Co., Ltd.
- Inventors: Mitsuhiro Tokuno
- Web page: https://patentgrep.com/patent/US10767333B2

## CPC

- E02D 5/34: Concrete or concrete-like piles cast in position {; Apparatus for making same (E02D5/50 takes precedence; moulds E02D5/665; placing, removing moulds E02D7/00 - E02D11/00; placing the concrete E02D15/04)}
- E02D 5/665: {for making piles}
- E02D 7/00: Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds (for both placing and removing E02D11/00; {accessories for coupling driver to piles or the like E02D13/10; for trees or other plants A01G17/16; placing posts E04H17/26})
- E02D 27/12: Pile foundations
- E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)}

## Abstract

The present invention enables easy construction of a foundation pile having a rigid structure even at a site where a pile produced in a factory cannot be brought in. The tube 1 having a forming material filling port 1a at a top end and a closed bottom 1b at a bottom end is set in a suspended state, and foundation pile forming material 4 is filled from the forming material filling port 1a into the tube 1 in the suspended state. A composite foundation pile 5 in which the tube 1 and the filled forming material 4 are integrated is formed, and the composite foundation pile 5 is driven into the ground 13 or inserted into a borehole 12 formed on the ground 13.

## Claims

### Claim 1

A construction method for a foundation pile, the method comprising:
suspending a cylindrical tube having a forming material filling port at a top end of a cylinder forming portion and a closed bottom at a bottom end of the cylinder forming portion, wherein the closed bottom is integrated with the cylinder forming portion;
inserting the cylindrical tube into a borehole formed in the ground while filling the suspended cylindrical tube with a foundation pile forming material, wherein the cylindrical tube is filled with the foundation pile forming material via the forming material filling port while the cylindrical tube is suspended, and the cylindrical tube is configured to withstand the fill pressure of the foundation pile forming material such that a shape of the cylindrical tube is substantially maintained after being filled with the foundation pile forming material; and
forming a composite foundation pile in which the tube and the filled forming material are integrated inside the borehole.

### Claim 2 (depends on 1)

The construction method for a foundation pile according to claim 1, wherein the tube is formed of a fiber knitted body.