DOUBLE-HEAD SHIFT PREVENTIVE MEMBER, PRECAST GIRDER, AND JOINING STRUCTURE BETWEEN PRECAST GIRDER AND FLOOR SLAB

摘要

PROBLEM TO BE SOLVED: To provide a double-head shift preventive member, a precast girder using the same, and a joining structure between the precast girder and a floor slab.;SOLUTION: The double-head shift preventive member 1 is formed of: a lower horizontal portion 3 embedded and secured into concrete; vertical side portions 4 integrally formed together with the lower horizontal portion 3 at both edges of the same, and erected from the same; and engaging heads 8 each arranged at an upper portion of the vertical side portion 4 and having an external diameter larger than that of the vertical side portion 4, in one body with the same. The precast girder is constructed such that the lower horizontal portion 3 of the double-head shift preventive member 1 is arranged on a lower side of a main reinforcement 12 of the precast girder 2, in a manner intersecting the main reinforcement 12. The joining structure between the precast girder and the floor slab is obtained by integrating the precast girder 2 and the cast-in-place concrete floor slab 15 together via the double-head shift preventive members 1 in the precast girder 2 and the concrete 19 in which an upper portion of each double-head shift preventive member 1 is embedded.;COPYRIGHT: (C)2007,JPO&INPIT