| 摘要 |
The invention relates to a screw (30) having a shaft (32) comprising a wooden thread (34) and to a connection of a component (10) to a substructure (20) made of cross-cut timber or brittle material, produced using said screw. The shaft (32) is designed as a ductile strain region (40) for a portion of the length thereof, said region being plastically deformable over the majority of the usable tensile strain. The screw is made of a low-strength steel having a tensile strength of 200 to 800 N/mm2. The screw (30) is not pretensioned when producing the connection. The tensile force that can be transferred between the wooden thread (34) and the substructure (20) is greater than the maximum tensile force that can be applied to the strain region (40). The anchoring of the wooden thread (34) and the diameter Dh of same are thereby selected with respect to the implementation of the strain region (40) so that the strain region (4) fails before the threaded connection in the region of the anchoring of the wooden thread (34) fails. The intrinsically brittle cross-cut grain connection becomes a ductile joint by using the screw (30) according to the invention.
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