| 考虑桩土作用的铁路曲线梁桥车桥耦合振动分析 |
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| 引用本文： | 单德山,李乔.考虑桩土作用的铁路曲线梁桥车桥耦合振动分析[J].重庆交通大学学报(自然科学版),2004,23(6):10-14. |
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| 作者姓名： | 单德山 李乔 |
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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;西南交通大学,土木工程学院,四川成都,610031 |
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| 摘 要： | 以某铁路曲线多跨简支梁桥为例,讨论了考虑桩土作用的铁路曲线梁桥车桥耦合振动. 在对曲线梁桥车桥耦合振动的分析中,建立了具有35个自由度的铁路车辆曲线通过模型和动力方程,建立了曲线梁的动力模型及其动力方程;建立了一种基于激励非线性振动的数值方法,并在Windows9X/2000/XP工作环境下利用PowerStation和VisualC++完成了计算程序的编制,取得了较好的计算结果. 分析中将曲线通过的车辆和曲线梁桥分为两个由非线性轮轨接触力所联系的振动子系统,通过迭代法进行求解这两个子系统;轨道不平顺采用在给定轨道条件下的人工模拟不平顺,在分析过程中计入了不同车速对曲线通过的车辆及曲线连续梁桥振动的影响,得到一些有益的结论.
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| 关 键 词： | 结构工程 曲线梁 耦合振动 |
| 文章编号： | 1001-716X(2004)06-0010-05 |
| 修稿时间： | 2004年1月12日 |
Coupled vibration analysis of rail-way simple-supported curved-girder bridges and vehicles with soil-structure interaction |
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| Abstract: | The coupled vibration analysis of rail-way simple-supported curved-girder bridges and vehicles was discussed in this paper. The dynamical equations of plane curved beam were deduced. According to features of coupled vibration between bridge and vehicle, a new numerical algorithm, which is based on the nonlinear excitation, was proposed. Above all, the algorithm can decrease the iterative time without losing precision. And the softwar VCBID was developed based on Windows 9X/2000/XP operation system. During analyzing variational speeds were taken into account. Some valuable results were obtained in the thesis. |
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| Keywords: | structural engineering curved-girder coupled vibration |
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