| Title |
Evaluation of Structural Behavior of Connections in Precast Arch Structures |
| Authors |
심창수(Shim, Chang Su) ; 김동찬(Kim, Dong Chan) ; 최대헌(Choi, Dae) ; 진경석(Jin, Kyung Seok) |
| DOI |
https://doi.org/10.12652/Ksce.2016.36.5.0747 |
| Keywords |
프리캐스트 아치;루프 이음;내하력;균열폭;시공성 Precast arch;Loop connection;Structural capacity;Crack width;Constructability |
| Abstract |
In this paper, a connection details for precast arch structures was proposed. Experiments were performed to evaluate structural performance of the loop connection details satisfying current design requirements and of alternative details for improvement of constructability. Precast arch specimens considering the current design requirements showed higher structural capacity than a cast-in-place arch specimen. Crack width at the connection of arch crown showed smaller value than 0.2 mm due to increased compression force by the applied vertical load. Strengthening by wire-mesh at notch area of the connection improved initial crack control capability. Connection detail with couplers and headed bars showed similar capacity to the reference specimen. The alternative details to improve constructability of reinforcements can be used without decreasing structural performance. Specimens with smaller internal diameter of mandrel and shorter loop splicing than the current design codes showed worse behavior in terms of crack width control. |