볼트 접합 DY전단연결재를 적용한 강합성 교량의 바닥판 교체공사 경제성 분석 = Economic Analysis of Panel-Replacement Work of Steel and Concrete Composite Bridge with Applied Bolt-Joint DY Connector

다국어 초록 (Multilingual Abstract)

Bridge is a physical infrastructure that is essential for the economic and social activities of people. It is also directly related to the safety and convenience of people; thus, its benefits should be considered from the perspective of the people. Among the bridge components, floor panel inevitably entails a replacement period during the entire life cycle of the bridge, and partial replacement due to damage is frequently performed. Bolt-joint shear connectors (DY bolts), which are employed to solve the problem of conventional welding shear connections that synthesize girder and floor panel, can reduce the construction period by minimizing the crushing work in the floor-panel-removal process and facilitating reconstruction of the shear connections during replacement work. An economic analysis of a steel and concrete composite bridge that uses DY bolts was performed from the perspective of road users (people) by calculating the cost to road users due to road blocking during the construction period and comparing it with the existing construction method.

국문 초록 (Abstract)

교량 인프라는 국민의 경제와 사회적 활동에 반드시 필요한 물리적 기반시설이고, 국민의 안전과 편의성에 직결되는시설이므로 국민의 입장에서 편익을 고려해야 한다. 교량의 구성요소 중 바닥판은 교량 전체의 생애주기 동안 필연적으로 교체시기가 도래하고 파손 등으로 인한 부분 교체도 빈번하게 이루어지고 있다. 바닥판 교체공사 시 거더와 바닥판을 합성하는 기존 용접 전단연결재의 문제점을 해결하기 위한 볼트 접합 전단연결재(DY볼트)는 바닥판 철거 공정에서 파쇄를 최소화하고 교체공사를 위한 전단연결재 재시공이 용이하여 공사 기간을 기존 대비 단축할 수 있는 것으로 분석되었다. 공사기간 중 도로차단으로 인해 발생하는 도로이용자비용을 산출하여 기존 공법과 비교하는 방법으로 볼트 접합 전단연결재를 적용한 강합성 교량의 경제성을 도로이용자(국민) 입장에서 분석하였다.

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