Application of vibration method for estimating tension force of stay cables in 2002 World-cup stadiums in Korea

Abstract

This study is to consider the character of cables in six World-Cup stadiums constructed in 2002 and to inspect problems on measurement natural frequencies interpretation and application of existing theory. Because stay cable structures should be controlled by the tension force of cable under the construction, and managed to maintain geometric balance without loss of the tension force after construction. it is very important to develop the method which is able to measure the tension force easily, quickly and reliably in the field. The result of experiment shows it is possible to determine the tension force with an accuracy of 8% by taking the cable bending stiffness. However, if single mode of vibration is used, the tension force of the real cables could be overestimated, and the estimated tension force with experimental results would not be reliable.