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Title |
Static Strength of Cramp Joint at Precast Highway Deck Slabs
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Keywords |
프리캐스트 바닥판 ; 현장 조인트 ; 정적 내하력 ; 클램프 조인트 Precast slabs ; Field joint ; Static strength ; Cramp joint |
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Abstract |
A new jointing method using steel cramps with a unique configuration was developed for the field joint of precast deck slabs of highway bridges. In this jointing method, the looped distribution bars are connected by the cramps to the main reinforcements. Therefore, the joint can transfer the bending moment and shearing force through the interlocking effect caused by the cramps, and it is both excellent in installation on-site and economical compared with the loop joint currently in use. In order to confirm the bending and shear capacities and to clarify the failure mechanism of the joint, a series of static loading tests were carried out. From the results of these experimental studies, it was clarified that the cramp joint has enough load carrying capacity being equivalent to the loop joint.
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