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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.20 No.3
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Behavior of the tunnel under the influence of a existing building during the adjacent ground excavation

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2018, v.20 no.3, pp.609-623
https://doi.org/10.9711/KTAJ.2018.20.3.609
(STeng)
(2018). Behavior of the tunnel under the influence of a existing building during the adjacent ground excavation. (사)한국터널지하공간학회, 20(3), 609-623, https://doi.org/10.9711/KTAJ.2018.20.3.609
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Abstract

If the ground is excavated in a depth which is deeper than the adjacent existing tunnel, the behavior of the braced wall is known to be greatly affected by the presence of the tunnel. By the way it is expected to be also affected by the structure on the ground surface, There are not many examples of studies which are conducted on this subject. As a result, largel scale model tests and analysis were conducted, to measure the behavior of the tunnel under the building whose location on the ground surface was varied during the adjacent ground excavation. For this purpose, the location of a building load was varied in 0 m, 1D, 2D on ground surface. In this paper, the behaviors of braced wall and adjacent tunnel was studied. Model tests in 1 : 10 scale were performed in real construction sequences. The size of test pit was 2.0 m (width) × 6.0 m (height) × 4.0 m (length) in dimension. As a result, it was found that the stability of the existing tunnel under the influence of the building load on the ground surface adjacent to the braced wall.

keywords
근접굴착, 흙막이벽체, 대형모형실험, Ground excavation, Braced wall, Large scale model test

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