| 斜拉桥桥塔的驰振响应分析 |
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| 引用本文： | 顾明,项海帆. 斜拉桥桥塔的驰振响应分析[J]. 空气动力学学报, 1991, 0(4) |
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| 作者姓名： | 顾明 项海帆 |
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| 作者单位： | 同济大学(顾明)，同济大学(项海帆) |
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| 摘 要： | 本文分析了一座拟修建的斛拉桥桥塔的驰振特性。用一种直接测量方法,在风洞中测量了该塔原模型及修改模型的气动力;推导了分段变截面的桥塔在边界层风场中的驰振响应公式,讨论了临界风速,得到了一些有意义的结果。本文方法及程序可用于一般工程实际。
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| 关 键 词： | 斜拉桥桥塔 驰振 边界层风场 |
GALLOPING RESPONSES OF CABLE-STAYED BRIDGE PYLONS |
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| Gu Ming Xiang Haifan. GALLOPING RESPONSES OF CABLE-STAYED BRIDGE PYLONS[J]. Acta Aerodynamica Sinica, 1991, 0(4) |
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| Authors: | Gu Ming Xiang Haifan |
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| Affiliation: | Tongji University |
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| Abstract: | In this paper, coefficients of fluctuatind and steady forces of a section model and two modified models of a proposed cable-stayed bridge pylon are obtained by using a new measurng method in wind tunnel. A formula is derived for calculating galloping responses of cable-stayed bridge pylons with variable-cross section in boundary layer wind field. A detailed discussion about galloping critical wind speed is made and some meaningful results are obtained. A calculation of galloping response of the proposed bridge pylon is performed as a example. |
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| Keywords: | cable-stayed bridge pylon galloping boundary layer wind field. |
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