| 摘要 |
The prestressed-concrete girder 1 exhibits stressing members 3 which extend in the longitudinal direction, run in sheaths 5 and are subsequently interconnected with the concrete by pressing in grouting mortar 6. In the region of the stressing members 3, the prestressed-concrete girder 1 exhibits cavities 8 in which the stressing members 3 are located, without being interconnected with the concrete, and are freely accessible. Seen in the longitudinal direction of the prestressed-concrete girder 1, each stressing member 3 runs in an alternating manner through an interconnected region 7 and a cavity 8, with the result that subsequent exchange of a stressing member 3 is possible in that parts of the stressing member 3 within the cavities 8 are removed and those within the interconnected regions 7 are drawn out, whereupon a new stressing member 3 can be drawn in. <IMAGE>
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