| 考虑几何与材料及静风荷载的非线性因素的大跨径桥梁静风稳定分析法 |
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| 引用本文： | 程进,江见鲸,肖汝诚,项海帆.考虑几何与材料及静风荷载的非线性因素的大跨径桥梁静风稳定分析法[J].应用力学学报,2002,19(4):117-121. |
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| 作者姓名： | 程进 江见鲸 肖汝诚 项海帆 |
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| 作者单位： | 1. 清华大学,北京,100084
2. 同济大学,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目 (5 9895 410和 5 993 8180 |
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| 摘 要： | 针对现有的桥梁静风稳定分析方法中存在的问题，提出了增量与内外两重迭代相结合的新方法，并且考虑了结构几何、材料和静风荷载非线性。在上述方法的基础上，编制了桥梁非线性空气静力稳定分析程序BNAP，并进行了相应的算例分析，所得结果表明该方法具有计算稳定和速度快的优点。最后，以一座主跨1000米的斜拉桥为例，分析了结构几何非线性、材料非线性和静风荷载非线性对大跨径桥梁空气静力稳定性的影响。
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| 关 键 词： | 大跨径桥梁 几何非线性 材料非线性 静风荷载非线性 空气静力稳定性 |
| 文章编号： | 1000-4939(2002)04-0117-05 |
| 修稿时间： | 2001年6月8日 |
An Aerostatic Stability Method for Long-Span Bridges Considering Geometrical, Material and Static Wind Load Nonlinearities |
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| Cheng Jin,Jiang Jianjing,Xiao Rucheng,Xiang Haifan.An Aerostatic Stability Method for Long-Span Bridges Considering Geometrical, Material and Static Wind Load Nonlinearities[J].Chinese Journal of Applied Mechanics,2002,19(4):117-121. |
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| Authors: | Cheng Jin Jiang Jianjing Xiao Rucheng Xiang Haifan |
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| Institution: | Cheng Jin 1 Jiang Jianjing 1 Xiao Rucheng 2 Xiang Haifan |
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| Abstract: | A new method is proposed in this paper, in which incremental procedure and inner outer iterative algorithm are included. And structural geometrical, material and static wind load nonlinearities are considered. Based on the method mentioned above, a nonlinear aerostatic stability analysis programme is developed. This method has the advantages of stable calculation and fast computation procedure. Finally, the effects of geometrical nonlinearity, material nonlinearity and static wind load nonlinearity on the aerostatic stability for long span bridges are analyzed. |
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| Keywords: | Long span bridges geometrical nonlinearity material nonlinearity static wind load nonlinearity aerostatic stability |
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