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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.20 No.1
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Investigation of soil behaviour due to excavation below the grouped pile according to shape of tunnel station

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2018, v.20 no.1, pp.83-97
https://doi.org/10.9711/KTAJ.2018.20.1.083




& (2018). Investigation of soil behaviour due to excavation below the grouped pile according to shape of tunnel station. (사)한국터널지하공간학회, 20(1), 83-97, https://doi.org/10.9711/KTAJ.2018.20.1.083
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Abstract

Tunnels are widely used for special purposes including roads, railways and culvert for power transmission, etc. Its cross-section shape is determined by uses, ground condition, environmental or economic factor. Many papers with respect to behaviours of adjacent ground and existing structure tunnelling-induced have been published by many researchers, but tunnel cross-section have rarely been considered. A collapse of tunnel causes vaster human and property damage than structures on the ground. Thus, it is very important to understand and analyse the relationship between behavoiurs of ground and cross-section type of tunnel. In this study, the behaviour of ground due to tunnel excavation for underground station below the grouped pile supported existing structure was analysed through laboratory model test using a trap-door device. Not only two cross-section types, 2-arch and box, as station for tunnel, but also, offset between tunnel and grouped pile centre (0.1B, 0.25B, 0.4B) are considered as variable of this study. In order to measure underground deformation tunnelling-induced, Close Range Photogrammetry technique was applied with laboratory model test, and results are compared to numerical analysis.

keywords
Tunnel station excavation, Tunnel cross-section type, Close range photogrammetry, Numerical analysis, Grouped pile, 터널 정거장 굴착, 터널 형상, 근거리 사진계측, 수치해석, 군말뚝

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