| 板-桁组合式钢桁梁悬索桥颤振稳定性选型研究 |
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| 引用本文： | 徐爱军,王凯,李明水,廖海黎.板-桁组合式钢桁梁悬索桥颤振稳定性选型研究[J].实验流体力学,2015,0(4):52-57. |
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| 作者姓名： | 徐爱军 王凯 李明水 廖海黎 |
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| 作者单位： | 贵州省交通建设工程质量监督局,贵阳,550081 |
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| 基金项目： | 交通运输部科技项目国家自然科学基金 |
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| 摘 要： | 板-桁组合式钢桁梁与传统的板-桁分离式钢桁梁的气动性能存在较大差异。以某大跨度板-桁组合式钢桁梁悬索桥为工程背景,通过节段模型风洞试验,详细研究了该桥的气动性能。针对关乎结构抗风安全的颤振问题,比较了下中央稳定板、上中央稳定板和水平稳定板对主梁颤振性能的影响。在综合考虑结构安全、经济和美观等因素的基础上,提出了最优的主梁气动方案。研究成果可为类似大跨度钢桁梁桥的抗风设计提供借鉴和参考。
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| 关 键 词： | 板-桁组合式钢桁梁 悬索桥 颤振 风洞试验 |
Flutter stability selection study of a long-span steel truss suspension bridge with a combined deck plate |
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| Abstract: | Comparing with the traditional beam-plate separation system,the aerodynamic per-formance of the steel truss with a combined deck plate is significantly different.By taking a sus-pension bridge with a combined deck plate as the engineering background,the aerodynamic per-formance of the bridge and aerodynamic optimizations of the deck configuration are studied in de-tail using the section model testing technique.To improve the flutter stability of the bridge,a se-ries of wind tunnel tests are conducted to investigate the effects of the upper central stabilized plate,the lower central stabilized plate and the horizontal stabilized plate on the flutter perform-ance of the main girder.According to the test results,the optimal aerodynamic measure is pro-posed to meet the requirements of the bridge wind resistance with consideration of structural safety,economy and aesthetic.The result can be taken as a reference for the design of aerody-namic performance of similar steel truss girder suspension bridges. |
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