In this study, the fragility for transmission tower subjected to wind disaster, which has the greatest influence on transmission tower, was developed for 154kV transmission tower located between Yangyang and Sokcho city. The resistance capacity and the limit state required for the evaluation of the fragility were divided into the major part and the auxiliary part in the steel tower. Moreover, the failure of tower was defined as the yielding stress of each member in the tower which could be used to determine their resistance performance. Domestic wind design guideline and criteria for transmission tower was used to determine the wind loads demand on the tower. By comparing the loading demand and resistance capacity, the failure of tower could be determined which in turn used to derive the wind fragility. The results obtained in this study could be used as a reference for damage prediction system of transmission tower and similar structures.

Abstract
 1. 서 론
 2. 대상구조물 선정 및 한계상태 평가
  2.1 대상 송전철탑
  2.2 대상구조물 수치해석 모델링
  2.3 한계상태 평가
 3. 대상구조물의 내풍 저항성능 산정
  3.1 송전철탑 내풍 설계기준
  3.2 저항성능 평가
 4. 강풍 취약도 평가 및 구축
  4.1 바람재해 취약도함수 평가 절차
  4.2 송전철탑 강풍취약도 평가
  4.3 상시 90°풍향시 송전철탑의 취약도 평가
  4.4 상시 60°풍향시 송전철탑의 취약도 평가
  4.5 강풍 취약도함수 분석
 5. 결 론
 REFERENCES

• 최정규(강릉원주대학교 토목공학과 석사과정) | Choi Jung-Kyu (Master Course Student, Department of Civil Engineering, Gangneung-Woju National University)
• 정우영(강릉원주대학교 토목공학과 교수) | Jung Woo-Young (Professor, Department of Civil Engineering, Gangneung-Woju National University) Corresponding author