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Title:
METHOD FOR CONSTRUCTING A FOOTING AT THE BOTTOM OF A PILE AND A FIXED ANCHORAGE PORTION OF A TENSION MEMBER, AND TOOL FOR EXPANDING A BOREHOLE WALL FOR SAME
Document Type and Number:
WIPO Patent Application WO/2012/053733
Kind Code:
A3
Abstract:
The present invention relates to a method for constructing a footing at the bottom of a pile and a fixed anchorage portion of a tension member, in which: a vertical hole is bored into the ground, and then a tool for expanding the borehole wall is disposed within the bottom of the hole; the tool is driven to expand the bottom of the hole and form an expanded portion, and simultaneously, a portion of the ground on the upper side of the expanded portion is supported by means of the tool; concrete for a footing or a fixed anchorage portion is passed through the tool to fill the expanded portion of the hole with the concrete; and the tool is gradually contracted to form a space that is filled with the concrete, thereby finally casting the concrete into the footing or the fixed anchorage portion at the bottom of the pile.

Inventors:
YIM, Seong Dae (1 Sangin daeseong Skyrex Apt, Sangin1-dong, Dalseo-gu, Daegu 704-863, 704-863, KR)
임성대 (대구 달서구 상인1동 171-1 상인대성스카이렉스, 704-863 Daegu, 704-863, KR)
HYUN, Jae Ho (1011-8, Bongdeok1-dong Nam-gu, Daegu 705-830, 705-830, KR)
Application Number:
KR2011/005624
Publication Date:
June 14, 2012
Filing Date:
July 29, 2011
Export Citation:
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Assignee:
SAMIL ENGINEERING & CONSTRUCTION CO., LTD (4F 777-85, Waegwan-ri Waegwan-eup, Chilgok-gun, Gyeongsangbuk-do 718-805, 718-805, KR)
주식회사 삼일이엔씨 (경상북도 칠곡군 왜관읍 왜관리 777-85 4층, 718-805 Gyeongsangbuk-do, 718-805, KR)
YIM, Seong Dae (1 Sangin daeseong Skyrex Apt, Sangin1-dong, Dalseo-gu, Daegu 704-863, 704-863, KR)
임성대 (대구 달서구 상인1동 171-1 상인대성스카이렉스, 704-863 Daegu, 704-863, KR)
International Classes:
E02D7/00; E02D5/62; E21B10/26
Foreign References:
JP2009002082A2009-01-08
JP2009127213A2009-06-11
KR100549088B12006-02-10
JP2003321989A2003-11-14
JP2003161091A2003-06-06
Attorney, Agent or Firm:
BAEK, Hong-Ki (543Namsan-dong, Jung-gu, Daegu 700-442, 700-442, KR)
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Claims: