| 斜拉桥索塔参数共振的数值研究 |
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| 引用本文： | 王波,王璠,刘人怀. 斜拉桥索塔参数共振的数值研究[J]. 暨南大学学报(自然科学与医学版), 2006, 27(3): 412-419 |
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| 作者姓名： | 王波 王璠 刘人怀 |
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| 作者单位： | 暨南大学应用力学研究所,广东,广州,510632;暨南大学应用力学研究所,广东,广州,510632;暨南大学应用力学研究所,广东,广州,510632 |
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| 摘 要： | 建立了斜拉桥索与塔的参数共振的数学模型,推导出索塔参数振动的控制方程,并对其进行了数值积分求解,考虑桥塔为弹性连续体.通过对数值结果的分析得出,在一定条件下,拉索可能由于桥塔振动而引发参数共振现象,并且该振动特性与索的振动频率、倾斜角度、静力垂度、初张力等有关,还和桥塔的一些结构性质有关.最后结合数值算例,讨论了阻尼的影响和减小拉索参数共振的可能性.
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| 关 键 词： | 斜拉桥 拉索 参数振动 数值积分 |
| 文章编号： | 1000-9965(2006)03-0412-08 |
| 修稿时间： | 2005-07-18 |
Numerical study on nonlinear parametric vibration of coupled cables and bridge tower |
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| WANG Bo,WANG Fan,LIU Ren-huai. Numerical study on nonlinear parametric vibration of coupled cables and bridge tower[J]. Journal of Jinan University(Natural Science & Medicine Edition), 2006, 27(3): 412-419 |
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| Authors: | WANG Bo WANG Fan LIU Ren-huai |
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| Abstract: | A mathematical model for the parametric vibration problem of cable stay bridge about cable and bridge tower is presented.The control equation is obtained and solved with direct integration method.The bridge tower is considered as a continuum.From the numerical analysis,the cable will act as parametric vibration in some condition and it is not only related to the cable's frequency,angle,sag and the beginning stain,but also related to the bridge tower's property.At last,the damp's affection is investigated. |
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| Keywords: | cable-stayed bridge cable parametric vibration direct intergration |
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