| 摘要 |
PROBLEM TO BE SOLVED: To provide an effective and appropriate joint structure capable of introducing a sufficient pre-stress into the joint part of a segment in a simple structure. SOLUTION: Two PC steel bars 10 are disposed, in a crossing state, on the joint part between both pieces (such as an upper floor slab piece 1 and a corner piece 3) to be connected, the PC steel bars are tensed, and both ends of each of the PC steel bars are anchored to both pieces, respectively. Therefore, both pieces are joined to each other with the PC steel bars while the pre-stress is introduced into the joint part. The PC steel bar has threads formed on the outer peripheral surface thereof and both ends to which nuts serving as anchoring devices 11 can be screwed. A sheath tube 12 and an anchoring device 11 at the front end are pre-buried in the joint part between both pieces to be connected. The nut serving as the anchoring device is screwed to the base end of the PC steel bar inserted into the sheath pipe, and the PC steel bar is tensed and anchored. COPYRIGHT: (C)2010,JPO&INPIT
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