Critical Tendon Bond Length for Prestressed Ground Anchors in Pullout Performance Tests Conducted in Sand
| Autor: | Hakki O. Ozhan, Erol Guler |
|---|---|
| Přispěvatelé: | Çzhan, Hakkı O. |
| Rok vydání: | 2017 |
| Předmět: |
Tendon Bond Length
Engineering business.industry 0211 other engineering and technologies Unbonded Length 02 engineering and technology Structural engineering Prestressed Ground Anchor Tendon Bond length Anchor Tendon Coefficient medicine.anatomical_structure Acceptance testing Earth anchor 021105 building & construction medicine Geotechnical engineering business Performance Test 021101 geological & geomatics engineering Civil and Structural Engineering |
| Zdroj: | International Journal of Civil Engineering. 16:1329-1340 |
| ISSN: | 2383-3874 1735-0522 |
| Popis: | Guler, Erol/0000-0002-3492-387X; WOS:000445635700006 In this study, pullout performance tests were conducted on five prestressed ground anchors having different tendon bond and unbonded lengths. The tendon bond lengths of the tested anchors varied from 4 to 10m, whereas the unbonded lengths were in the range of 8-16m. The tests were performed separately on a dense, gravelly sandy soil slope with an inclination of 90 degrees in Cottbus, Germany. The anchors were inclined downwards at an angle of 15 degrees below the horizontal. The results indicated that three of the five anchors did not satisfy the acceptance criteria as outlined in DIN 4125 Standards. According to the acceptance criteria, the line that was composed of the elastic displacements of the unbonded length had to remain between two specific limit lines. Although the elastic displacements of the unbonded tendons were taken into account for the acceptance of the anchors, the length of the unbonded tendon did not have a significant effect on stability. The anchors having unbonded lengths of 8, 13, and 15m failed, whereas the anchors with unbonded length of 9 and 16m were accepted after the termination of the performance tests. However, the tendon bond length was proved to be an important parameter that contributed to the acceptance of the tested anchors. Test results indicated that anchors having tendon bond lengths longer or shorter than 6m were rejected. |
| Databáze: | OpenAIRE |
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