| Title |
An Assessment of the Prestress Force on the Bonded Tendon Using the Strain and the Stress Wave Velocity |
| Authors |
장정범(Jang, Jung Bum) ; 황경민(Hwang, Kyeong Min) ; 이홍표(Lee, Hong Pyo) ; 김병화(Kim, Byeong Hwa) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.3A.183 |
| Keywords |
부착식 텐던;긴장력;변형률;응력파 속도 bonded tendon;prestress force;strain;stress wave velocity |
| Abstract |
The bonded tendon was adopted to the reactor containment building of some operating nuclear power plants in Korea and the assessment of the prestress force on the bonded tendon is very important for the evaluation of the structural integrity. The prestress force of the bonded tendon at real reactor containment building, was evaluated using the SI technique and impact signal analysis technique which were developed to improve the existing indirect assessmment technique. For these techniques, the strain of the reactor containment building and the stress wave velocity of the bonded tendon were measured. Both SI technique and impact signal analysis technique give the highly reliable results comparison with the existing theoretical approach. Therefore, it is confirmed that the developed techniques are very useful for the evaluation of the prestress force on the bonded tendon. |