| 摘要 |
PROBLEM TO BE SOLVED: To provide an overlapping structure of main girder members in a segment main girder bending device, capable of easily adjusting the height of overlapped main girder members arranged on the upper face of a bending work base by overlapping them to such height being equivalent to thickness of a pressing mold. SOLUTION: In this overlapping structure 10 of the main girder members used in the segment main girder bending device 10, the main girder bending device 10 includes the bending work base 14, the pressing mold 15 having a convex face 15a in a distal end part, and rotary roller members 16 arranged in both of ends of a side face on the opposite side to the pressing mold 15 of the main girder members 12. The main girder member 12 has a strip shape and constitutes a height adjusting layer 32 formed by arranging plate-shaped liners 31 for adjusting height having the same width (b) as that of the main girder member 12 continuously in the longitudinal direction of the main girder member 12 as, for example, the uppermost layer of the main girder members 12 being arranged by overlapping a plurality of them so that the height h1 of the whole overlapped main girder members 12 including the height adjusting layer 32 becomes such height that is equal to thickness (t) of the pressing mold 15. COPYRIGHT: (C)2011,JPO&INPIT
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