KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Estimation of Live Load Moment for Concrete Unfilled Steel Grid Deck Using Main Bearing Bar Distribution Factor

하중분배 계수를 적용한 비충전 강합성 바닥판 활하중 모멘트 산정

  • 박영훈 (부천대학교 토목공학과) ;
  • 김성훈 (서울과학기술대학교 공과대학 건설시스템디자인공학과)
  • Received : 2013.09.29
  • Accepted : 2014.08.27
  • Published : 2014.12.01
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Abstract

Because of the different flexural rigidity between longitudinal and transverse direction, orthotropic plate theory may be suitable for describing the behavior of composite deck. The ratio of flexural rigidity between longitudinal and transverse direction affects the live load moment. Because of the ratio of flexural rigidity of concrete unfilled steel grid deck has a direct relationship with main bearing bar spacing, it is concluded that the study for the distribution factor which is effected by main bearing bar spacing and aspect ratio is needed. In this study, evaluate the live load moment of concrete unfilled steel grid deck using the AASHTO LRFD Bridge Design Specification and presents the distribution coefficient equation for concrete unfilled steel grid deck.

강합성 바닥판은 두 방향의 휨 강성이 다르기 때문에 직교이방성의 성질을 가진다. 강합성 바닥판의 휨 강성비는 활하중 모멘트에 영향을 미친다. 비충전 강합성 바닥판의 휨 강성비는 메인 베아링 바 간격과 직접적인 관계를 가지고 있어 메인 베아링 바 간격과 형상비 영향이 고려된 하중분배 계수식에 대한 연구가 필요한 것으로 판단된다. 본 연구에서는 휨 강성비를 고려하는 AASHTO LRFD Bridge Design Specification에 의한 비충전 강합성 바닥판의 활하중 모멘트를 평가하고 비충전 강합성 바닥판의 하중분배 계수식을 제안하고자 한다.

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References

  1. Ahn, I. S., Park, Y. H., Chen, S. S. and O'Connor, J. (2012). "Live load distribution of hybrid fiber-reinforced polymer composite superstructure on the basis of field test." Journal of the Transportation Research Board, No. 2313, pp. 189-197.
  2. Bakht, B. and Jaeger, L. G. (1985). Bridge analysis simplified, Mcgraw-Hill Book.
  3. Bettigole, R. A. (1996). "Nighttime re-decking with pre-cast exodermic bridge deck-case studies." IBC-96-14, pp. 48-57.
  4. Bettigole, R. A. and Higgins, C. (1999). "Nighttime redecking of the tappan zee bridge with a revised exodermic deck design." IBC-99-10, pp. 16-29.
  5. Cai, C. S. (2005). "Discussion on AASHTO LRFD load distribution factors for slab-on-girder bridges." Practice Periodical on Structural Design and Construction, Vol. 10. No. 3, pp. 171-176. https://doi.org/10.1061/(ASCE)1084-0680(2005)10:3(171)
  6. FEA Ltd. (2002). Powerful FE technology for specialist applications, LUSAS Ver. 13.4.
  7. Kim, S. H., Park, Y. H., Lee, S. Y. and Choi, J. H. (2008). "Experimental study on the flexural behavior of inverted t-shaped steel.concrete composite deck for bridges." Journal of KSCE, Vol. 28, No. 3A, pp. 331-340 (in Korean).