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Structural Performance Verification of RDT Girder Bridge Feasible to Fill with Planting Ground

식재기반을 담는 RDT 거더교의 구조성능 검증

  • 하태열 ((주)삼현피에프 기술연구소) ;
  • 한종욱 ((재)건설연구인프라운영원) ;
  • 양인욱 ((주)삼현피에프 기술연구소)
  • Received : 2014.10.30
  • Accepted : 2015.03.12
  • Published : 2015.03.31

Abstract

The proposed RDT(Reversed Double T) girder bridge is suitable to eco corridor, because of its cross section which resembles Korean alphabet vowel "ㅛ". The total height and cost of bridge would be reduced for its inner space containing some of plant soil. In this study, the performance of the RDT girder was assessed by comparing results of static test with those of nonlinear analysis. The cracking load of the RDT girder was evaluated more than two times of design load.

RDT(Reversed Double T) 거더교는 생태교 맞춤형으로 개발된 PSC 교량 형식이다. 모음 ㅛ형상과 유사한 단면형상이 가장 큰 특징이며 거더 내부 공간에 흙을 담을 수 있어 상부 구조 전체 높이를 획기적으로 낮추고 시공성과 경제성이 우수하여 생태교로써 적용이 활발할 것으로 기대되는 공법이다. 새로 제안된 RDT 거더교의 실적용을 위해서는 공용 중 안전성 검증이 필요하다. 본 연구에서는 RDT 거더교의 실물모형 실험체를 설계 및 제작하여 정적재하 실험을 수행하였다. 실험결과와 변형률적합법을 이용한 비선형 해석 결과를 바탕으로 거동을 평가하고 구조성능을 검토하였다. 검토 결과, RDT 거더교는 사용하중의 2배 이상 균열 안전성을 확보하고 있으며 우수한 휨 성능을 보유하고 있는 것으로 나타났다.

Keywords

References

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