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Load Bearing Capacity Evaluation of New Lattice Girder by Laboratory Test
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 Title & Authors
Load Bearing Capacity Evaluation of New Lattice Girder by Laboratory Test
Choi, Young-Nam; Jang, Yeon-Soo; Kim, Dong-Gyu; Bae, Gyu-Jin;
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 Abstract
Recently, the depth of tunnel constructed is getting deeper, which increases difficulty in construction works. Deliberate tunneling techniques are needed as the span and length of tunnels are increased. As one of the technical developments for tunnel, U-shaped and reinforced spider lattice girders are developed by optimizing the spider used in 95mm lattice girder as tunnel steel ribs. In order to evaluate the load bearing capacity of the lattice girder, the 4-point flexural tests are carried out. For the laboratory tests, straight specimens are made for the existing lattice girder and the new lattice girder. The results of the flexural tests showed that the maximum load bearing capacity of the new lattice girders was higher than the traditional one. The load-displacement behavior of the test specimens showed the elasto-plastic behavior in the existing lattice girder and the stress softening behavior in the new lattice girder. It was found that the load bearing capacities are changed depending on the location of the loading points.
 Keywords
Lattice girder;U-shaped spider;reinforced spider;4 point flexural test;Load bearing capacity;
 Language
Korean
 Cited by
 References
1.
김동규 . 최윤호 . 김동률(2007), "레티스거더 성능평가를 위한 실내시험기법의 평가", 한국지반공학회 가을학술발표회 논문집, 1113-1120.

2.
김동규 . 배규진 (2009), "격자지보재의 실내성능평가기법 개발", 터널기술논문집, 10(4): 371-382.

3.
배규진 . 김동규 . 이성호 . 최영남 (2009), "고성능 격자지보재 개발", 터널공학회 봄학술발표회논문집, 111-115.

4.
유충식 . 김연정 . 이대영 . 한병권(1996), 격자지보재의 현장적용성에 관한 연구, 성균관대학교 연구보고서.

5.
최영남(2009), "터널 격자지보재 개발을 위한 하중지지력 평가", 동국대학교 석사학위논문.

6.
한국건설기술연구원(1996), 터널지보용 래티스거더의 현장적용성 연구, 천원공업주.

7.
Baumann, T. and Betzle, M. (1984), "Investigation of the Performance of Lattice Girders in Tunnelling", Rock Mechanics and Rock Engineering, 17(2): 67-81. crossref(new window)