프리캐스트 아치구조의 이음부 구조 거동 평가

초록

In this paper, a connection details for precast arch structures was proposed. Experiments were performed to evaluate structuralperformance of the loop connection details satisfying current design requirements and of alternative details for improvement ofconstructability. Precast arch specimens considering the current design requirements showed higher structural capacity than acast-in-place arch specimen. Crack width at the connection of arch crown showed smaller value than 0.2 mm due to increasedcompression force by the applied vertical load. Strengthening by wire-mesh at notch area of the connection improved initial crackcontrol capability. Connection detail with couplers and headed bars showed similar capacity to the reference specimen. The alternativedetails to improve constructability of reinforcements can be used without decreasing structural performance. Specimens with smallerinternal diameter of mandrel and shorter loop splicing than the current design codes showed worse behavior in terms of crack widthcontrol.

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