| 深切峡谷区大跨度桥梁的复合风速标准 |
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| 引用本文： | 李永乐,唐康,蔡宪棠,廖海黎.深切峡谷区大跨度桥梁的复合风速标准[J].西南交通大学学报,2010,45(2). |
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| 作者姓名： | 李永乐 唐康 蔡宪棠 廖海黎 |
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| 作者单位： | 西南交通大学土木工程学院,四川成都,610031 |
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| 基金项目： | 国家自然科学基金，新世纪优秀人才支持计划，四川省杰出青年学科带头人计划 |
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| 摘 要： | 为考虑复杂地形地貌区大跨度桥梁不同构件处风特性的差异,在对地区相关气象站历史实测风速资料进行统计分析的基础上,推算了地区基本风速.通过对地区气象站和桥位风速观测点同步实测风速资料相关性的分析,建立了桥址区风速与地区气象台站风速间的订正关系.基于桥址区地貌特征并结合CFD分析结果,确定了主梁及各桥塔的设计风速,提出了复合风速标准的概念.研究结果表明,与常规桥梁单一的风速标准不同,深切峡谷区大跨度桥梁宜采用考虑主梁及各桥塔风特性差异的复合风速标准.
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| 关 键 词： | 大跨度桥梁 复杂地形 桥址区 相关性 复合风速标准 |
Integrated Wind Speed Standard for Long-Span Bridges over Deep-Cutting Gorge |
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| LI Yongle,TANG Kang,CAI Xiantang,LIAO Haili.Integrated Wind Speed Standard for Long-Span Bridges over Deep-Cutting Gorge[J].Journal of Southwest Jiaotong University,2010,45(2). |
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| Authors: | LI Yongle TANG Kang CAI Xiantang LIAO Haili |
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| Institution: | LI Yongle,TANG Kang,CAI Xiantang,LIAO Haili(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | To consider the difference of wind characteristics for different members of a long-span bridge in complex terrains,the basic wind speed for the region was calculated on the basis of the statistical analysis of historical observation records of wind speed from meteorological stations involved.From the simultaneous observation data from the meteorological stations and observation points in a bridge site,the revision relationship between wind speeds at the bridge site and at the meteorological stations was est... |
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| Keywords: | long-span bridge complex terrain bridge site correlativity integrated wind speed standard |
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