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| Content Provider | Springer Nature Link |
|---|---|
| Author | del Sen, M. Piazza, M. Tomasi, R. |
| Copyright Year | 2004 |
| Abstract | This paper reports the results of an investigation on the behaviour of axially loaded joints utilising glued-in steel rods. A finite element model has been set up, in order to study the most influencing parameters for the shear stress distribution. Then, a series of tests have been carried out on joints made with Norway Spruce blocks and threaded steel bars, with different epoxy resin formulations and various ratios of hole/bar diameters. Different bar diameters have been used in experimental survey, ranging from 8 to 12 mm. Clearances of 1 or 2 millimetres have been left between bar and hole wall. The reported results are based on a sample of 240 specimens, which can be considered sufficient for statistical reliability. A statistical analysis has been performed, which confirms that: 1) the system proved to be highly efficient and reliable, with regard both to failure load and to joint stiffness; 2) with the epoxy-based adhesive used, the most important parameters affecting the strength and the stiffness of these joints seem to be the thickness of glue line and the viscosity property of the adhesive during the pouring phase; 3) these kinds of joints can be designed as ductile for specific purposes, choosing a suitable diameter of the bar.Diese Arbeit berichtet über die Ergebnisse einer Untersuchung über axial belastete Verbindungen mit eingeklebten Stahlstäben. Ein FE-Modell wurde aufgestellt, um die wichtigsten Parameter für die Verteilung der Scherbelastung zu untersuchen. Anschließend wurde eine Reihe von Tests an Verbindungen aus norwegischer Fichte und Gewindestäben aus Stahl mit verschiedenen Epoxitharzen und unterschiedlichem Loch/Stabdurchmesser durchgeführt. Verschiedene Stabdurchmesser, von 8 bis 12 mm, wurden in dieser experimentellen Untersuchung herangezogen. Der Freiraum zwischen Stange und Lochwand betrug 1 oder 2 mm. Die genannten Ergebnisse basieren auf einem Kollektiv von 240 Proben, was als statistisch ausreichend angesehen werden kann. Eine statistische Analyse wurde durchgeführt, die bestätigt: 1) das System erwies sich als hochgradig zuverlässig, sowohl im Hinblick auf Bruchlast als auch auf Verbindungsfestigkeit, 2) mit der Verwendung des Epoxitklebers scheinen die wichtigsten Parameter im Bezug auf Festigkeit und Unbeweglichkeit die Dicke der Klebefuge und die Viskosität des Klebers während der Bearbeitung zu sein, 3) dieser Verbindungstyp kann für bestimmte Anwendungsgebiete als duktil gestaltet werden, es muss nur ein passender Stabdurchmesser gewählt werden. |
| Starting Page | 137 |
| Ending Page | 146 |
| Page Count | 10 |
| File Format | |
| ISSN | 00183768 |
| Journal | Holz als Roh- und Werkstoff |
| Volume Number | 62 |
| Issue Number | 2 |
| e-ISSN | 1436736X |
| Language | German |
| Publisher | Springer-Verlag |
| Publisher Date | 2004-03-03 |
| Publisher Place | Berlin/Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Materials Science Forestry |
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