The method based on various mathematical characteristic equations for identifying tensile forces in the cable structure system are used as response data to reflect the properties of the dynamic sensitivity. The vibration tests have been conducted with respect to levels of applied weight for the sagged cable. In this study, a set of natural frequencies are extracted from the measured dynamic data. Next, existing characteristic equation methods based these extracted natural frequencies are applied to identify tensil forces of the sagged cable system. Through several verification procedures, the proposed methods could be applied to a sagged cable system when the initial material data are insufficiency.

• 노명현(포항산업과학연구원 강구조연구소 에너지인프라본부 선임연구원) | Noh, Myung-Hyun
• 이상열(안동대학교 토목공학과 조교수) | Lee, Sang-Youl Corresponding author