Behavior of Segments in Precast Prestressed Concrete Hollow Slab Bridges

프리캐스트 프리스트레스트 콘크리트 중공슬래브 교량의 분절거동

Precast prestressed concrete hollow slab bridge is one of segmented bridge which can be long span, so that the structural behavior of joints of adjacent segment should be evaluated by the analysis as well as experiment. In this study, small scaled beam tests were carried out to determine joint shear key shape and restraint stress by prestressing. From the tests and the analysis, it was found that the joint key shape and the restraint stress affect the behavior of segments and the segments which has the height to the width of shear key as 1/3 possess maximum shear resistance.