바람의 난류에 대한 장대교량의 버페팅 응답 검토를 위한 수치해석
Numerical Analysis for the Evaluation of Buffeting Response of a Long Span Bridge in Turbulent Wind Flow
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참고문헌
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초록
본 연구는 바람의 난류에 의한 장대교량의 피로 및 사용성에 문제를 야기시킬수 있는 버페팅 현상에 대해 주파수 영역에서의 해석적 연구를 수행하였으며, 유한요소방법과 램던 이론에 의해 바람의 파워스펙트럼, 변동특성 및 교량 구조물의 응답을 산정하였다. 바람의 난류에 의한 버페팅 응답을 해석할 수 있는 전산 해석기술을 개발하였으며, 개발된 해석 프로그램을 통하여 예제를 수행하였다. 단순지지된 보 구조물에 대한 버페팅 응답을 수행하였으며, Scanlan의 해석방법과 비교, 검토한 결과 잘 일치하였다. 끝으로 2경간 연속 사장교에 대한 해석을 수행하였다.
Abstract
This study is focused on the buffeting response of a long span bridge in turbulent wind in the frequency domain, which may cause the fatigue and serviceability problems. In this paper, the power spectral density and elemental internal forces of the bridge structure are computed using the finite element method and random vibration theory. Development of computational codes for simulation of buffeting response analysis is presented. Several examples are simulated using the method presented in this study. The first example is considered a simply supported beam structure and compared with Scanlan’s method. It can be seen that the results of the present method have very good agreement. Finally, development of computational code is applied to two span continuous cable-stayed bridge.
참고문헌 (16)
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