보강된 이음부와 뒤채움을 적용한 조립식 프리캐스트 콘크리트 아치교량의 실물모형실험 = Full-Scale Test on Precast Concrete Arch Bridge with Reinforced Joint and Backfill

다국어 초록 (Multilingual 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.

국문 초록 (Abstract)

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.

참고문헌 (Reference)

1 정철헌, "보강된 이음부를 가진 조립식 프리캐스트 콘크리트 아치의 구조성능" 대한토목학회 34 (34): 29-47, 2014

2 정철헌, "루프이음을 갖는 반단면 프리캐스트 바닥판 이음부 성능에 대한 실험적 연구" 대한토목학회 28 (28): 581-590, 2008

3 Heyman, J., "The masonry arch, Ellis Horwood Limited" Chichester 1982

4 Sowden, A. M., "The maintenance of brick and stone masonry structures" E. & F.N 1990

5 Design Manual for Roads and Bridges, "The assessment of highway bridge and structures, Vol. 3. section 4, part 4, BA 16/97Amendment No.2"

6 Taylor, S. E., "Testing of half-scale model flexible concrete arches" 2006

7 ASTM, "Standard specification for steel strand, uncoated seven-wire for prestressed concrete (ASTM A416/A416M-06)"

8 Korea Road & Transportation Association, "Korea highway bridge design code"

9 Drosopoulos, G. A., "Influence of the geometry and the abutments movement on the collapse of stone arch bridges" 22 : 200-210, 2008

10 KICT, "Development of long-life deck systems for bridgesprecast concrete deck" 2006

11 Gupta, A., "Construction of tievenameena bridge using a flexi-arch system" 2008

12 David, H., "Application and design of segmental precast arches" ASCE 452-459, 2004

13 ABAQUS, "Abaqus analysis user’s manual version 6.9"

14 Hognestad, E., "A study of combined bending and axial load in reinforced concrete members" University of Illinois Engineering Experiment Station 1951

15 Gupta, A., "A flexible concrete arch system" 2005