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직선배치된 외부 긴장재로 보강된 2경간 강합성교의 증가 프리스트레스력을 고려한 내하율 산정식을 이용한 보강설계
Strengthening Design Using Rating Factor Considering Increment of Tendon Force for Two-Span Steel-concrete Composite Bridges Strengthened by Straight External Tendons
- 최동호;
- 유훈;
- 김성원;
- 김용식
초록
In this paper, a method of increasing in load-carrying capacity is shown in two-span steel-concrete composite bridges strengthened by external tendons. An analytic expression for the increment of tendon force under external loads is derived using virtual work method for straight external tendons and a new rating factor equation is proposed. Considering the initial tendon force and its increment under external loads, an analytic procedure has been developed to calculate the number of tendons and the initial tendon force from the proposed rating factor equation. This method is used to verify a validity and rationality for an existing two-span composite steel-concrete bridge.
키워드
External tendon; Initial tendon force; Increment of tendon force; Rating factor; 외부 긴장재; 초기 긴장력; 증가 프리스트레스력; 내하율; External tendon; Initial tendon force; Increment of tendon force; Rating factor
- 제목
- 직선배치된 외부 긴장재로 보강된 2경간 강합성교의 증가 프리스트레스력을 고려한 내하율 산정식을 이용한 보강설계
- 제목 (타언어)
- Strengthening Design Using Rating Factor Considering Increment of Tendon Force for Two-Span Steel-concrete Composite Bridges Strengthened by Straight External Tendons
- 저자
- 최동호; 유훈; 김성원; 김용식
- 발행일
- 2009-03
- 권
- 13
- 호
- 2
- 페이지
- 153 ~ 164