| 自锚式吊拉组合体系桥静风稳定性随机分析 |
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| 引用本文： | 叶毅,张哲,李文武. 自锚式吊拉组合体系桥静风稳定性随机分析[J]. 土木工程学报, 2011, 0(Z1): 114-120 |
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| 作者姓名： | 叶毅 张哲 李文武 |
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| 作者单位： | 西安建筑科技大学;大连理工大学; |
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| 基金项目： | 国家交通部西部建设基金(200631882350); 陕西省重点学科建设专项资金(E01004); 陕西省教育厅专项科研项目(11JK0962); 西安建筑科技大学校人才科技基金(RC1028) |
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| 摘 要： | 为了研究复杂结构体系结构参数不确定性对其静风稳定性的影响,采用响应面法,选择出若干个对因变量影响较大的随机变量参与响应面拟合。利用该方法对大连湾自锚式吊拉组合体系桥静风稳定性进行随机分析。计算分析表明,材料、几何尺寸的变异对大跨自锚式斜拉-悬索组合体系桥静风失稳临界风速影响较为明显,其中主梁截面面积和质量密度的变异最为敏感。所做工作能为自锚式斜拉-悬索组合体系桥结构受力分析及合理设计提供参考,同时为复杂结构体系不确定性参数的随机分析提供相应的思路。
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| 关 键 词： | 自锚式斜拉-悬索组合体系桥 静风稳定性 响应面法 随机性 |
Stochastic analysis of aerostatic stability of self-anchored cable-stayed suspension bridges |
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| Ye Yi Zhang Zhe Li Wenwu. Stochastic analysis of aerostatic stability of self-anchored cable-stayed suspension bridges[J]. China Civil Engineering Journal, 2011, 0(Z1): 114-120 |
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| Authors: | Ye Yi Zhang Zhe Li Wenwu |
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| Affiliation: | Ye Yi1 Zhang Zhe2 Li Wenwu2(1.Xi'an University of Architecture & Technology,Xi'an 710055,China,2.Dalian University of Technology,Dalian 116023,China) |
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| Abstract: | In order to study the influence of complex structure parameters uncertainty on its aerostatic stability,the method of response surface was adopted and the random variables that have significant impact on the dependent variables was selected to fit response surface.Based on the adopted method,stochastic analysis of aerostatic stability of a self-anchored cable-stayed suspension bridge was conducted.The result shows that randomness of material and geometrical size has obvious influence on aerostatic instabili... |
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| Keywords: | self-anchored cable-stayed suspension bridge aerostatic stability response surface approach randomness |
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