CONNECTING STRUCTURE AND CONNECTING METHOD OF UHPC PRECAST SLAB USING STEEL BAR AT ZERO BENDING MOMENT POINTS

摘要

PURPOSE: A connecting structure and a connecting method of a UHPC precast bottom plate are provided to prevent the detaching of a steel bar from a UHPC precast bottom plate through forming a stepped shaped concave part in the upper side of a UHPC bottom plate. CONSTITUTION: A connecting structure of a UHPC precast bottom plate comprises a pocket portion(61), an interconnection slab(6), a stepped portion(63), and a concave part(11). The projected connection portion of the upper side of a girder(2) passes through the pocket portion. The interconnection slab is manufactured through precast and is coupled with a girder into one body. The stepped portion is formed in the interconnection slab. The concave part is formed in the interconnection slab into lateral direction. A projected portion coupled with the stepped portion is formed in UHPC bottom plates(1a,1b) coupled with interconnection slab.