| Title |
An Experimental Study of the Anchoring Device on External Post-Tension System |
| Authors |
Shin Kyung-Jae ; Kim Nam-Hyeong |
| Keywords |
External Post-Tension ; High Tension Bar ; Anchoring Device ; Anchor |
| Abstract |
External post-tensioning is considered one of the most powerful techniques used for strengthening or rehabilitation of existing structures and had grown recently to occupy a significant share for the construction market. The anchoring device on external post-tension system is on of the most important element because of the stress concentration at the anchoring location. This paper presents the results of experimental investigation of the anchoring devices on external post-tension system. The test results of 11 anchoring device specimens with three different types are described. The main anchoring elements used are chemical anchors and steel pins inserted in concrete beam. The behavior at both the ultimate strength and the failure mode is evaluated. The experimental results showed that the suggested details for the anchoring device resisted up to the strength of the high-tension bar. All specimens failed beyond the yielding point of the high strength bar, however, the ductility of some specimens need to increased. The important points to reduce the premature failure and to increase the ductility are suggested. The details suggested in the study could be used in the construction field for strengthening the beam. |