| 预应力混凝土组合箱梁桥波形钢腹板优化分析 |
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| 引用本文： | 单成林.预应力混凝土组合箱梁桥波形钢腹板优化分析[J].武汉理工大学学报(交通科学与工程版),2011(4). |
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| 作者姓名： | 单成林 |
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| 作者单位： | 华南理工大学土木与交通学院; |
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| 基金项目： | 广东省公路管理局科技基金项目资助(批准号:粤公研2009-15) |
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| 摘 要： | 建立3种不同体系的波形钢腹板预应力混凝土组合箱梁桥空间有限元计算模型,采用AN-SYS参数化语言对钢腹板进行多约束条件下多设计参数的优化计算分析,寻求各设计参数的最佳组合规律.结果表明,随着循环次数的增加,目标函数趋于理想值,而设计变量及状态变量也趋于稳定,但目标函数值并非是最终取值时惟一考虑的因素,优化结果将提供多组满足约束条件的设计参数;波形钢腹板剪切屈曲应力的理论计算值偏于保守;钢腹板的厚度在通常范围内偏小;在已有资料范围内,波形钢腹板折叠角度及腹板与竖直面的夹角偏小,而波形钢腹板折痕间的长度则偏大.
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| 关 键 词： | 组合桥梁 箱梁桥 优化分析 波形钢腹板 空间有限元 |
Optimization Analysis of Corrugated Steel Webs of Prestressed Concrete Composite Box-girder Bridge |
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| Shan Chenglin.Optimization Analysis of Corrugated Steel Webs of Prestressed Concrete Composite Box-girder Bridge[J].journal of wuhan university of technology(transportation science&engineering),2011(4). |
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| Authors: | Shan Chenglin |
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| Institution: | Shan Chenglin(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | For exploring the optimum composite regularity of design parameters,the optimal analysis of corrugated steel webs with multi-restraint condition and multi-variable was done by establishing the 3D finite element models of three PC composite box-girder bridge types with corrugated steel webs,based on the APDL parametric language.The results indicate that the objective function tend to ideal value,and the same time design variables and state variables tend to be stable with the increase of the cycle number,but... |
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| Keywords: | composite bridges box-girder bridge optimization analysis corrugated steel web 3D finite element |
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