KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Full-Scale Test on Precast Concrete Arch Bridge with Reinforced Joint and Backfill

보강된 이음부와 뒤채움을 적용한 조립식 프리캐스트 콘크리트 아치교량의 실물모형실험

  • 정철헌 (단국대학교 토목환경공학과) ;
  • 주상훈 (단국대학교 토목환경공학과) ;
  • 최동찬 (금호산업(주) 건설기술연구소) ;
  • 이종윤 (금호산업(주) 건설기술연구소)
  • Received : 2013.11.11
  • Accepted : 2014.02.09
  • Published : 2014.04.01
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Abstract

In this paper, the load test of full-scale precast concrete arch bridges considering reinforced joint and backfill was conducted. It is an improved method that the reinforced joint enhanced the structural performance of conventional masonry arch system which was proposed by previous researchers. The models of full-scale test are $10m(span){\times}3m$ (rise) and $10m(span){\times}2m$ (rise), which are 2 meters in width. The critical load position was shown at a third-span from the results of the pre-analysis. Based on the this results, the positions of load, measuring items and points were determined in experiments. As a result, the maximum load capacity of the specimen $10m{\times}2m$, a relatively small rise to span ratio (compared to the specimen $10m{\times}3m$), was higher than the specimen $10m{\times}3m$. It was evaluated that all the specimens have sufficient structural performance on the design load.

본 연구에서는 기존 연구자들이 제안한 석조형식의 아치시스템에서 보강된 이음부와 뒤채움이 고려된 아치교량의 실물모형에 대한 재하실험을 수행하였다. 실물모형교량의 실험체는 10 m (경간) ${\times}$ 3 m (높이)과 10 m (경간) ${\times}$2 m(높이)이며, 실험체 폭은 2 m로 동일하게 하였다. 예비해석결과로부터 구조적으로 가장 취약한 하중위치는 경간의 1/3로 나타났고 그 결과를 토대로 구조실험시 하중재하위치, 측정 항목 및 위치를 결정하였다. 실험결과, 최대 내력은 높이/경간 비가 상대적으로 작은 실험체 $10m{\times}2m$가 실험체 $10m{\times}3m$보다 크게 나타났다. 실험체 모두 설계하중에 대하여 충분한 구조적 성능을 확보하는 것으로 평가되었다.

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