A damage case of parallel strand cable anchorage was introduced, in which 7 strands were slipped from each wedge at the anchorage of the cable stayed bridge in service. Also, a cable damage detection scheme was proposed on the basis of tension force measurement and model updating method by least square estimation to minimize tension variation. The proposed scheme has been verified from analytical simulations and the actual damage case. The damaged cable leading to tension variation more than noise level of cable force measurement was successfully detected with 7~8 strands damage indication of 2% error in the actual strand slippage case.

• 양기재(한국시설안전공단 국가시설관리본부) | Yang Ki-Jae
• 정지숙(한국시설안전공단 국가시설관리본부) | Jung Ji-Sook
• 박원주(한국시설안전공단) | Park Won-Joo
• 박시현(한국시설안전공단) | Park Si-Hyun
• 유동우(한국시설안전공단) | You Dong-Woo