| 摘要 |
<p>A thin plate structure such as a deck structure for, for instance, a footbridge comprises at least two abutting and substantially horizontally arranged profiled girders. Each girder comprises at least two substantially vertical plate-shaped side members. The girders are interconnected two by two by means of a plurality of connection fittings in these side members. These connection fittings are formed by locking lifting and comprising at least one downwardly pointing locking tongue cut out in one of the side members of each girder. Along a preferably horizontally extending bent bending area the locking tongue is bent in an offset manner outwards. The locking tongue co-operates with a locking tongue opening punched out opposite the locking tongue in the abutting side member of the adjacent girder as well as with at least one upwardly pointing locking gill punched out of one of the side members in each girder. This locking gill is bent outwards in an offset manner along a preferably horizontally extending bending area and co-operates with a locking gill opening punched out opposite the locking gill in the abutting side member of the adjacent girder. The side members are furthermore so resilient that they allow an insertion of the locking tongue and the locking gill into the locking tongue opening and the locking gill opening, respectively, in such a manner that the upward rim surface of the locking gill is made abutting the downward rim surface of the locking gill opening, the downward side of the bending area of the locking tongue is made abutting the upward rim surface of the locking tongue opening, and the uppermost area of the inner side of the locking tongue opening is made abutting the area of the inner side of the side member, said area abutting the above rim surface. Through the locking fittings the thin plate structure can transfer forces (stresses) from the concentrated loads on one part of the thin plate structure to other parts thereof without causing mutual displacements of the girders.</p> |
