EARTH RETAINING SELF-RELIANCE STRUCTURE AND EARTH RETAINING CONSTRUCTION METHOD USING IT

摘要

The present invention relates to an earth retaining self-standing structure to maximize rigidity of an earth retaining construction wall to install an underground structure, and a construction method using the same, comprising: an H-shaped steel portion of high strength; a rectangular pipe portion having a plurality of perforation holes formed on a lower portion thereof in the form of a rectangular tube having an inner side penetrated therethrough, and coupled to both sides thereof based on a web of the H-shaped steel portion; and an injection pipe forming a plurality of discharge holes of a grouting material on a lower portion thereof to inject the grouting material into the rectangular steel portion. After the grouting material is injected, a coating agent is applied to a lower outer circumferential surface of the injection pipe coming in contact with the grouting material to separate the H-shaped steel portion and the rectangular portion from the hardened grouting material. Accordingly, the present invention is able to be reused and a rigidity of a wall increased.