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Performance evaluation of lattice girder depending on the quality of steel
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 Title & Authors
Performance evaluation of lattice girder depending on the quality of steel
Jung, Hyuk-Sang; Shin, Young-Wan; Song, Ki-Il; Shin, Jong-Ho;
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 Abstract
This paper dealt with contents on the performance evaluation of standardized steel and non-standardized steel of lattice girder. Lattice girder is arch type tunnel supports made of structural steel bar and it is girder used to ensure the stability of tunnel by suppressing any transformation of ground as much as possible during tunnel excavation. The performance evaluation of lattice girder can be conducted through bending strength test, tensile strength test and tunnel standard specification specifies that welding structural steel with over 500MPa yield strength shall be used. However, it is difficult to distinguish visually between standardized steel and non-standardized steel onsite if low-quality structural steel is used. Accordingly, this paper conducted performance evaluation of standardized steel and non-standardized steel of lattice girder to point out the issue of deteriorated yield strength of non-standardized steel, while proposed a method of verifying yield strength onsite.
 Keywords
Lattice girder;Non-standardized lattice girder;Yield strength;Performance evaluation;
 Language
Korean
 Cited by
1.
비파괴법을 활용한 격자지보의 성능평가 기법 제안,정혁상;

한국터널지하공간학회 논문집, 2016. vol.18. 5, pp.431-439 crossref(new window)
 References
1.
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2.
Kim, D.K., Bae, G.J. (2011), "BK-Lattice girder", Korean Tunnelling and Underground Space Technology, pp. 435-440.

3.
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4.
Kim, D.K., Lee, S.H., Kim, N.Y. (2009), "Status and capacity of lattice girder", 2009 Proceedings of Korean Geo-Environmental Society, pp. 371-380.

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Ministry of Land, Infrastructure and Transport (2015), "Guidelines for the design of tunnel", pp. 48-50.

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Ministry of Land, Infrastructure and Transport (2015), "Tunnel construction guide specification", pp. 35-39.

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Moon, H.D. (1999), "Evaluation on the applicability of a lattice girder for a support system in tunnelling", Korean Society for Rock Mechanics, pp. 204-213.