CRACK SUPPRESSING STRUCTURE, CRACK SUPPRESSING METHOD, AND PRECAST CONCRETE MEMBER

摘要

PROBLEM TO BE SOLVED: To provide crack suppressing structure capable of suppressing cracking, a crack suppressing method, and a precast concrete member such as a precast concrete floor slab. SOLUTION: Steel bars 6a such as reinforcements are so disposed between adjacent concrete portions as to be intersected with a crack-expected boundary surface 5 where a crack 10 is expected to occur in a concrete. A projecting member 7 for crack suppression having an outer diameter larger than the outer diameter of the steel bar is fixed to each longitudinal side of the steel bar on both sides of the crack-expected boundary surface 5 to form a steel bar 6 with a projecting member for crack suppression. The steel bar 6 with the projecting member for crack suppression is buried between adjacent concrete portions. The precast concrete member has a steel bar 6 with a projecting member for crack suppression. COPYRIGHT: (C)2008,JPO&INPIT