| 流线型主梁断面的气动导纳互谱识别 |
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| 引用本文： | 陈晓冬,葛耀君.流线型主梁断面的气动导纳互谱识别[J].上海应用技术学院学报,2007,7(4):285-289. |
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| 作者姓名： | 陈晓冬 葛耀君 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室，同济大学土木工程防灾国家重点实验室 上海200092，福州大学福建福州350002，上海200092 |
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| 基金项目： | 国家自然科学基金;福州大学校科研和教改项目 |
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| 摘 要： | 气动导纳是描述大跨度桥梁断面抖振气动力的关键环节,现存的各种导纳函数识别方法以及经典的Sears函数均与试验结果存在着不小的误差。本研究摈弃相关的假定,引入了考虑六个导纳的互谱识别方法,对于流线型主梁的典型断面进行了气动导纳识别,并分析了栏杆、紊流度、攻角等对识别结果的影响。
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| 关 键 词： | 气动导纳 流线形断面 互谱方法 Sears函数 |
| 文章编号： | 1671-7333（2007）04-0285-05 |
| 收稿时间： | 2007-09-20 |
| 修稿时间： | 2007年9月20日 |
Aerodynamic Admittance Recognition of Streamline Girder Sections Cross-correlation Spectrum Recognition |
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| CHEN Xiao-dong,GE Yao-jun.Aerodynamic Admittance Recognition of Streamline Girder Sections Cross-correlation Spectrum Recognition[J].Journal of Shanghai Institute of Technology: Natural Science,2007,7(4):285-289. |
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| Authors: | CHEN Xiao-dong GE Yao-jun |
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| Institution: | 1. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University,Shanghai 200092, China; 2. Fuzhou University, Fuzhou, Fujian 350002, China |
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| Abstract: | Aerodynamic admittances are key factors to describe the buffeting forces on a bridge deck,but current recognition methods and sears functions have inneglected deviations with wind tunnel results.So some correlative assumes are abandoned,and a cross-correlation spectrum recognition method is induced which can recognize six admittances to recognize typical streamline girder section.Then the effects of balustrade' attack angel and wind speed are examined. |
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| Keywords: | aerodynamic admittance streamline sections cross-correlation spectrum recognition method sears function |
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