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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.4 No.3

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A desing case study of the very wide 3-arch tunnel under Daejeon railroad station building (I)

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2002, v.4 no.3, pp.246-260





& (2002). A desing case study of the very wide 3-arch tunnel under Daejeon railroad station building (I). (사)한국터널지하공간학회, 4(3), 246-260.

Abstract

This paper presents the design case of the 3-arch tunnel under Daejeon railroad station building. The original construction method was the underpinning method supported by pipe-roof, but it was changed to the mined tunnelling method because of the complex construction condition and the safety problem. This 3-arch tunnel has a width of 28 meters and a height of 10 meters. Overburden is only 23m and the ground around the tunnel is a weathered rock. The allowable settlements for the station building and some railroads are very strict. Accordingly, various measurements for the tunnel stability and the settlement minimization was applied and they were reviewed by 2-D and 3-D numerical analysis.

keywords
3-arch tunnel, tunnel stability analysis, tunnel reinforcement, support, ground settlement, 3-arch tunnel, tunnel stability analysis, tunnel reinforcement, support, ground settlement, 3-arch 터널, 터널안정해석, 터널지보, 지반침하

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