Title:
METHOD FOR CONSTRUCTING A STEEL PIPE/CONCRETE COMPOSITE PILE IN WHICH THE STEEL PIPE IS BURIED INTEGRALLY WITH BEDROCK, AND PILE CONSTRUCTION
Document Type and Number:
WIPO Patent Application WO/2011/105703
Kind Code:
A3
Abstract:
The present invention relates to a method for constructing a steel pipe-concrete composite pile in which the steel pipe is buried integrally with bedrock, and to a pile construction. The method comprises: a step (S110) of hammering an outer casing into a soil stratum; a step (S120) of drilling the inner surface of the outer casing such that the outer casing penetrates into an upper surface of a bedrock stratum beneath the soil stratum and is supported; a step (S130) of inserting a bedrock boring tool into the outer casing, and boring the bedrock stratum beneath the outer casing up to a predetermined depth so as to form a hole in the bedrock stratum; a step (S140) of enabling a steel pipe assembly to be buried, to penetrate into the outer casing and to be supported on the bottom of the hole formed in the bedrock stratum, wherein the steel pipe assembly includes a steel pipe, and a blocking member for preventing concrete from being pushed upwardly, wherein the diameter of the steel pipe of the steel pipe assembly is smaller than that of the outer casing, and the blocking member is arranged on an outer surface of the steel pipe of the steel pipe assembly such that the blocking member is disposed at a position axially spaced apart from the lower end of the steel pipe of the steel pipe assembly by a distance corresponding to the depth of said hole, wherein the portion of the steel pipe of the steel pipe assembly beneath the blocking member has a plurality of discharge holes for discharging, to said hole, concrete injected into the steel pipe of the steel pipe assembly; a step (S150) of injecting concrete into the steel pipe of the steel pipe assembly supported on the bottom of the hole formed in the bedrock stratum, and enabling the concrete to be discharged through the discharge holes of the steel pipe of the steel pipe assembly and fill the hole formed in the bedrock stratum, such that the steel pipe assembly is integrated with the bedrock stratum; and a step (S160) of drawing and removing the outer casing. According to the present invention, the steel pipe is buried in the bedrock stratum and structurally integrated with the bedrock stratum, thereby obtaining a pile construction with maximized end bearing force and earthquake resistance.
Inventors:
SONG GI-YONG (KR)
SONG KEUN-SUK (KR)
SONG KEUN-SUK (KR)
Application Number:
PCT/KR2011/000555
Publication Date:
October 20, 2011
Filing Date:
January 27, 2011
Export Citation:
Assignee:
SONG GI-YONG (KR)
SONG KEUN-SUK (KR)
SONG KEUN-SUK (KR)
International Classes:
E02D5/30; E02D5/34; E02D13/00
Foreign References:
| KR100758113B1 | 2007-09-11 | |||
| KR100871726B1 | 2008-12-02 | |||
| KR20080027481A | 2008-03-27 | |||
| JPS62296009A | 1987-12-23 |
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Claims:
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