# US 9,518,368 B2 · Pile foundation and pile foundation installation method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,518,368 B2 - Document ID: US9518368B2 - Status: Granted - Kind: B2 - Application number: 14/415,852 - Filed: 2013-07-17 - Published: 2015-07-30 - Granted: 2016-12-13 - Earliest claimed: 2012-07-20 - Assignees: Itogumi Construction Co., Ltd.; Lasco Japans Co., Ltd. - Applicants: Itogumi Construction Co., Ltd.; Lasco Japan Co., Ltd. - Inventors: Makoto Nishioka; Kazuhiro Nagao; Manabu Shimatani; Kazuhiro Shibuya - Web page: https://patentgrep.com/patent/US9518368B2 ## CPC - E02D 5/223: {Details of top sections of foundation piles (E02D5/54 takes precedence)} - E02D 5/54: Piles with prefabricated supports or anchoring parts; Anchoring piles {(E02D5/44 takes precedence; ground anchors E02D5/80; anchored foundations E02D27/50)} - E02D 5/80: Ground anchors {(for galleries, tunnels or shafts E21D21/00)} - 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 27/14: Pile framings {, i.e. piles assembled to form the substructure} - E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)} ## Abstract A pile foundation, on top of which a structural object is placed, supported at the ground surface by a plurality of batter piles, has a pile foundation body comprising a lower plate disposed on the bottom side, an upper plate disposed on the top side, and a support post for supporting the lower plate and the upper plate, separated by a prescribed gap, to be substantially parallel. A plurality of piling holes, through which each of the batter piles pass through in a downward direction in a substantially radial form, are formed in the lower plate and the upper plate. ## Claims ### Claim 1 A pile foundation supported on a ground surface for placing a structural object on top, the pile foundation comprising: a plurality of driving piles: and a pile foundation body supported on the ground surface by the plurality of driving piles, the pile foundation body comprising: a lower plate disposed on a bottom side; an upper plate formed in a same shape as the lower plate and disposed on a top side of the lower plate to be vertically symmetrical; and a support post that supports the lower plate and the upper plate substantially parallel at a predetermined interval, wherein the support post of the pile foundation body is configured with a plurality of support bars that perpendicularly extend from the lower plate to the upper plate in order to maintain the predetermined interval, the lower plate and the upper plate comprise a plurality of pile holes through which the driving piles penetrate downward in a substantially radial pattern, the plurality of pile holes formed in a same shape at vertically symmetrical positions of the lower plate and the upper plate. ### Claim 2 (depends on 1) The pile foundation according to claim 1, wherein the pile foundation body further comprises a sedimentation suppression plate formed with a greater dimension to the outside than the lower plate, the sedimentation suppression plate provided on the lower plate. ### Claim 3 (depends on 2) The pile foundation according to claim 2, wherein the support bars support outer edges between the upper plate and the lower plate. ### Claim 4 (depends on 1) The pile foundation according to claim 1, wherein the support bars are arranged along outer edges of the upper plate and the lower plate. ### Claim 5 (depends on 1) The pile foundation according to claim 1, wherein all of the support bars are in a columnar shape. ### Claim 6 (depends on 1) A pile foundation installation construction method, comprising: placing the pile foundation body of claim 1 on the ground surface, inserting the plurality of driving piles of claim 1 into the pile holes of the pile foundation body from the upper plate to the lower plate in the pile foundation body to drive the plurality of driving piles into a ground in a substantially radial pattern to install the pile foundation. ### Claim 7 A pile foundation supported on a ground surface by a plurality of driving piles, for placing a structural object on top, the pile foundation comprising a pile foundation body comprising: a lower plate disposed on a bottom side; an upper plate disposed on a top side; and a support post that supports the lower plate and the upper plate substantially parallel at a predetermined interval, wherein the lower plate and the upper plate are provided with a plurality of pile holes through which the driving piles penetrate downward in a substantially radial pattern, and the pile foundation body comprises a thermally insulated pyramid-shaped frost heaving prevention pyramid on a bottom surface of the lower plate, an apex of the frost heaving prevention pyramid facing downward. ### Claim 8 (depends on 7) The pile foundation according to claim 7, wherein the frost heaving prevention pyramid is formed in a polygonal pyramid shape, and the pile hole is formed on each side surface of the frost heaving prevention pyramid. ### Claim 9 (depends on 7) The pile foundation according to claim 7, wherein the support post of the pile foundation body is configured with a plurality of support bars, and the support bars support outer edges between the upper plate and the lower plate. ### Claim 10 (depends on 7) The pile foundation according to claim 7, wherein the support post of the pile foundation body is formed in a single structure, the support post is entirely arranged between the upper plate and the lower plate, and the support post is positioned at a center of the lower plate. ### Claim 11 (depends on 7) The pile foundation according to claim 7, wherein the support post of the pile foundation body is configured with a plurality of support bars, and all of the support bars are in a columnar shape. ### Claim 12 (depends on 7) A pile foundation installation construction method, comprising: placing the pile foundation body of claim 7 on the ground surface, inserting the plurality of driving piles of claim 7 into the pile holes of the pile foundation body from the upper plate to the lower plate in the pile foundation body to drive the plurality of driving piles into a ground in a substantially radial pattern to install the pile foundation. ### Claim 13 A pile foundation supported on a ground surface by a plurality of driving piles, for placing a structural object on top, the pile foundation comprising a pile foundation body comprising: a lower plate disposed on a bottom side; an upper plate disposed on a top side; and a support post that supports the lower plate and the upper plate substantially parallel at a predetermined interval, wherein the lower plate and the upper plate are provided with a plurality of pile holes through which the driving piles penetrate downward in a substantially radial pattern, the support post of the pile foundation body is formed in a single structure and disposed at a center, and four angle steels of a same type are used for each of the lower plate and the upper plate to surround and fix four upper side surfaces and four lower side surfaces of the rectangular-solid support post to form a substantially rectangular frame shape. ### Claim 14 (depends on 13) The pile foundation according to claim 13, wherein the support post of the pile foundation body is formed in a rectangular solid shape. ### Claim 15 (depends on 13) A pile foundation installation construction method, comprising: placing the pile foundation body of claim 13 on the ground surface, inserting the plurality of driving piles of claim 13 into the pile holes of the pile foundation body from the upper plate to the lower plate in the pile foundation body to drive the plurality of driving piles into a ground in a substantially radial pattern to install the pile foundation.