| 摘要 |
1. Device for fastening a plastic sheet (6), especially to a tunnel wall, wherein for fastening the device nails or screws (5) are provided, the heads of which can be sunk into a recess provided in the device and wherein the plastic sheet (6) to be fitted can be secured by sealing (welding) to the device and wherein the device possesses predetermined breaking points which, under overloading, lead to a shearing-off of a portion of the device together with the plastics sheet (6), residues of the device remaining around the head of the fixing means (5) which protect the plastic sheet (6) from damage by the head, characterized in that the device is formed meandering in cross-section, a central foot (11), equipped with the recess, being provided for bearing against the wall and a web (12) disposed concentrically around it, with a collar (14) disposed between them being provided, which collar is equipped, near the foot (11), with recesses (15, 18, 19, 21), which are disposed perpendicularly and/or obliquely to the plane of the device. |
