斜拉桥独塔施工状态风载内力的风洞试验研究
Wind Tunnel Test Study on Wind-Induced Internal Force of a Cable-Stayed Bridge Tower
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摘要:基于均匀流和紊流风场中的桥塔模型风洞试验所测得的桥塔空气力静力系数及塔顶抖振响应的位移 均方根,采用线性叠加法及有限元法反演,给出设计风速下塔底控制截面的顺风向静风及抖振内力。Abstract:Based on the static wind force factors of a tower and on the root-mean-square of the buffeting displacement responses of the tower top, which are measured by wind tunnel tests in laminar and turbulent field respectively, the static and buffeting internal forces of the tower bottom control sections under its design wind speed are obtained by linear superposition method and FEM.
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Key words:
- cable-stayed bridge/
- wind tunnel test/
- buffeting/
- FEM
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