| Title |
A Development of Soundness Evaluation Index for Poor Appearance Distribution Concrete Poles |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2014.28.9.035 |
| Keywords |
Soundness Evaluation Index ; Distribution Concrete Poles ; Strength Test ; Safety Factor |
| Abstract |
This study was to secure the safety of poor appearance distribution concrete poles effectively and to reduce the replacement costs of them by developing a soundness evaluation index. The researcher of this study investigated poor appearance types of concrete pole, collected 53 of test samples, and tested pole strength. As a result of strength test, only 17 percent of poor appearance concrete poles were below 2.0 of safety factor spec. As results of multiple regression analysis, it is verified that surface air void, horizontal crack, net-shaped crack, elapsed year, vertical crack, and deterioration in concrete compressive strength have statistically negative effects on safety factor of concrete poles in a significant level. The researcher set up a soundness evaluation index by using multiple regression equation, and suggested that poor appearance concrete poles should be replaced or reinforced only in case of soundness evaluation score of 150 or above. |