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Static Instability Analysis of Long-Span Cable-Stayed Bridges with Carbon Fiber Composite Cable under Wind Load

並列摘要


In this paper, a three dimensional analysis is performed to investigate the static instability of long-span cable-stayed bridges due to wind loading. Cables made of carbon fiber composite cable (CFCC) are studied. Nonlinearity due to displacement-dependent wind loading is considered. A 1400-meter cable-stayed bridge model is used to investigate the static behavior of bridges with both steel and CCFC cable. The static instability of the bridges, both after completion as well as under construction, is considered. This study concludes that the static stability of CFCC long-span cable-stayed bridges simulates that of steel cable-stayed bridges. It is also shown that the instability phenomenon occurs when the wind attack angle acting on the girder exceeds 5 degrees.

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