Abstract
For prestressed concrete girders, a lot of cases of applying the external cable strengthening method for the fracture of internal cable, have been reported. But it is difficult that external cable are set up at the anchorage in girder end because of the restriction in construction. Therefore, there is concern that the strengthening effect for the shear capacity is not secured when the internal cable fractures in girder end. On the other hand, the shear capacity when the internal cable fractures near anchorage, was not clarified. In this study, the static loading test with the large specimen which simulated actual bridges, were conducted and it was found that the shear capacity exceeded the design capacity, sufficiently, even if internal cables fractured near anchorage. In addition, because the shear capacity at the testing was higher than it of the previous assumption, the shear capacity was inspected by FEM analysis and the shear capacity evaluations in foreign countries were investigated, too.
