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首页> 外文期刊>The HKIE Transactions >Full-bridge aeroelastic model wind tunnel tests for the Stonecutters Bridge
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Full-bridge aeroelastic model wind tunnel tests for the Stonecutters Bridge

机译：昂船洲大桥全桥气弹模型风洞试验

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Owing to the topographic and/or temperature effect, atmospheric boundary layer winds are invariably turbulent in nature. The gustiness of turbulent wind-flow over bridge deck causes pressure fluctuations on the deck and hence resulting in random response of the bridge. This phenomenon is known as buffeting. An accurate prediction of buffeting response is an important aspect in the design of long-span cable-supported bridges. On the basis of the concept of stationary time series which had been applied to solving the problems of gust-loading of aircraft by Liepmann [On the application of statistical concepts to the buffeting problem. J Aeronaut Sci. 1952;19(12):793], Davenport [The application of statistical concepts to the wind loading of structures. Proc Instit Civil Eng. 1961;19:449-472] first applied the statistical concepts to predicting buffeting response due to gusts on civil engineering structures. Over the years, there have been continuous refinements in the buffeting analysis methodology. Before finalising the design of long-span bridges, it is prudent to conduct full-bridge aeroelastic model tests in a wind tunnel with the objectives to verify the: (1) aeroelastic stability of the bridge and (2) buffeting response of the bridge to turbulent wind, as compared with the calculated results. With the above objectives in mind, the full-bridge aeroelastic model wind tunnel tests for the Stonecutters Bridge was carried out in FORCE Technology of Copenhagen, Denmark. Whilst the objective (1) is the subject of another publication [Hui MCH, Larsen A, Falbe-hansen K. Full bridge aeroelastic model tests for Stonecutters Bridge. Proceedings of the IABSE Conference; 2004. p. 22-36], the present paper will focus on the objective (2).
机译：由于地形和/或温度的影响，大气边界层风在自然界中始终是湍流。桥面板上湍流的湍流使面板上的压力波动，从而导致桥的随机响应。这种现象称为抖振。在大跨度斜拉桥设计中，准确预测抖振响应是一个重要方面。基于固定时间序列的概念，Liepmann已将其用于解决飞机的阵风载荷问题[将统计概念应用于抖振问题。航空科学学报。 1952; 19（12）：793]，达文波特[统计概念在结构风荷载中的应用。 Proc Instit Civil Eng。 1961; 19：449-472]首先将统计概念应用于预测土木工程结构上阵风引起的抖振响应。多年来，抖振分析方法一直在不断完善。在确定大跨度桥梁的设计之前，谨慎的做法是在风洞中进行全桥梁气弹模型测试，目的是验证：（1）桥梁的气弹稳定性和（2）桥梁的抖振响应。湍流风，与计算结果相比。考虑到上述目标，在丹麦哥本哈根的FORCE Technology公司对昂船洲大桥进行了全桥气动弹性模型风洞试验。虽然目标（1）是另一篇出版物的主题[Hui MCH，Larsen A，Falbe-hansenK。昂船洲大桥的全桥气动弹性模型试验。 IABSE会议论文集; 2004。 [22-36]，本文将重点关注目标（2）。

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