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A Study on the Design Bending Moments of Long Span Decks with KL-510 Load

KL-510 하중을 적용한 장지간 바닥판의 설계휨모멘트에 관한 연구

  • 정철헌 (단국대학교 토목환경공학과) ;
  • 이한주 (단국대학교 토목환경공학과) ;
  • 주상훈 (단국대학교 토목환경공학과) ;
  • 안호현 (단국대학교 토목환경공학과)
  • Received : 2015.09.01
  • Accepted : 2016.03.16
  • Published : 2016.06.01

Abstract

In the current Korea highway bridge design code (KHBDC), the criteria of concrete bridge decks are mainly based on short span decks of steel plate girder bridge, there are very little the specific criteria of long span decks in the twin steel plate girder bridge. Therefore, to put more rational and practical design criteria of the long span decks on the code, the complements of the related criteria are required in the current design code. This paper proposed the design bending moments of decks with 6.0~12.0m span for KL-510 load in direction to bridge (longitudinal direction) and perpendicular direction to bridge (transverse direction). The effects of orthotropic concrete decks, stiffness of steel girders and multiple lane loading factors (MLLF) were reflected in the design bending moments. The proposed design bending moments were compared to the design bending moments with DB-24 load.

현행, 도로교설계기준에서는 교량바닥판에 대해 지간이 짧은 다거더 플레이트 거더교 위주의 규정을 두고 있으며, 강합성 소수 거더교에 적용되는 장지간 바닥판에 대한 설계규정은 명확하게 없는 실정이다. 이는 소수 거더교의 장지간 바닥판에 적용하기에는 한계가 있으므로 합리적인 설계를 위해서는 관련 규정을 보완할 필요가 있다. 따라서, 본 연구에서는 내측부 교량바닥판의 지간 6.0~12.0m 범위를 대상으로 도로교설계기준의 KL-510 하중을 적용하여 교축방향(종방향)과 교축직각방향(횡방향)에 대한 설계휨모멘트를 제안하였다. 설계휨모멘트는 바닥판의 직교 이방성, 거더의 강성, 그리고 다차로재하계수의 영향이 반영되었으며, 이를 기존의 DB-24 하중에 대한 설계휨모멘트와 비교하였다.

Keywords

References

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Cited by

  1. Evaluation on Static Behavior of Long Span Prestressed Concrete Deck vol.36, pp.6, 2016, https://doi.org/10.12652/Ksce.2016.36.6.0969