SLIP OF “Bulldog”-type toothed-plate connectors in steel-timber joints of open-web girders
| Year | Volume | Start Page | End Page |
|---|---|---|---|
2004 | 10 | 23 | 29 |
Composite steel-timber open-web girders invented by Truss Joint MacMillan company (Canada) provide some technological and structural advantages. Timber chords and steel diagonals of triangular open-web are connected by "Bulldog" type single-sided toothed-plate connectors. The article presents the results of research on four real-size (span - 3 m) open-web trussed purlin with "Bulldog"-type connectors. From carried out tests next parameters are determined: resistance of "Bulldog"-type connectors, slip modulus and statical slip values depending on the angle between the force and wood fibres directions. It is also received numerical values of the slip modulus and statical slip, which are substantically greater than given in experimental Eurocode 5. The tests also let to find that redistribution of forces in steel diagonals of the trussed purlin starts when slip of "Bulldog"-type connectors in steel-to-timber joints approaches to the limit (2 mm) value.