STEEL TUBE GIRDER HAVING ADJUSTABLE LENGTH, DUAL INSTALLATION SYSTEM FOR STEEL TUNNEL SUPPORT USING RIGIDITY-REINFORCED CFT STEEL TUBE GIRDERS FILLED THEREIN, DUAL CONSTRUCTION METHOD FOR STEEL TUNNEL SUPPORT USING SYSTEM, AND STEEL TUBE GIRDER STRUCTURE FOR DUAL INSTALLATION

Title:

Document Type and Number:

WIPO Patent Application WO/2017/047984

Kind Code:

A1

Abstract:

The present invention relates to a steel tube girder having an adjustable length, and a dual installation system for a steel tunnel support using rigidity-reinforced CFT steel tube girders filled therein. The primary objective of the present invention is to minimize a gap between a tunnel foundation, at which overbreak has occurred, and a half-section steel tube girder of an arch-shaped part, having moved horizontally toward the overbreak, by extending and adjusting the horizontal length of the half-section steel tube girder of the arch-shaped part at a horizontal length extending part (L) of a ceiling crown (C) by a horizontal length adjusting pipe (P). The present invention is useful since the half-section steel tube girder of the arch-shaped part horizontally moves toward the tunnel foundation by the extension and the adjustment of the horizontal length thereof, such that an overbreak gap between the foundation and the half-section steel tube girder of the arch-shaped part is minimized, and the amount of expensive shotcrete to be poured therein is also minimized such that tunnel construction can be economical.

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Inventors:

MA SANG JOON (KR)

Application Number:

PCT/KR2016/010102

Publication Date:

March 23, 2017

Filing Date:

September 08, 2016

Export Citation:

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Assignee:

KOREA INST OF CONSTRUCTION TECH (KR)
TS TECH CO LTD (KR)

International Classes:

E21D11/14; E21D11/10; E21D11/18; E21D11/22

Foreign References:

JP4237043B2	2009-03-11
JP2003082994A	2003-03-19
KR20130005412A	2013-01-16
JPH05171737A	1993-07-09
JP4805852B2	2011-11-02

Attorney, Agent or Firm:

PARK, Jae Hwan (KR)

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