プレキャストPC床版の橋軸方向機械式継手の耐荷性に関する研究

抄録

In order to expedite and save manpower for replacement of existing bridge deck slabs, a longitudinal mechanical joint for precast prestressed concrete (PC) slab is proposed. A static flexural test of RC beams and a static punching shear test of PC slabs were carried out. In the static flexural test, it was found that the flexural capacity of RC beams joined by the mechanical joints was equivalent to that of RC beams without joints, and the tensile force due to bending moment was transferred from the mechanical joint to the rebar in the beams as calculated. In the static punching shear test, it was confirmed that the PC slabs joined by the mechanical joints showed the same load-displacement relationship and the punching shear capacity as those of RC loop joints generally used for the precast PC slabs.