| 斜腿刚构桥几何布局的优化设计 |
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| 引用本文： | 安蕊梅,刘维华,牛润明.斜腿刚构桥几何布局的优化设计[J].石家庄铁道学院学报,2005,18(4):22-25. |
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| 作者姓名： | 安蕊梅 刘维华 牛润明 |
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| 作者单位： | [1]石家庄铁道学院土木工程分院,河北石家庄050043 [2]石家庄铁道学院职业技术分院,河北石家庄050043 |
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| 摘 要： | 采用数学规划的方法从静力和动力两方面对斜腿刚构桥的几何布局进行优化设计。静力优化设计的优化目标是截面截面应力平方均值最小，动力优化设计的优化目标是结构自振周期平方和最小。采用了直接搜索法寻优。通过算例可知，这两种优化设计方法均可行，且均为刚性设计。
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| 关 键 词： | 斜腿刚构桥 几何布局 静力优化 动力优化 直接搜索法 |
| 文章编号： | 1006-3226（2005）04-0022-04 |
| 收稿时间： | 2005-02-26 |
| 修稿时间： | 2005年2月26日 |
Optimum Design for the Layout of Slant Legged Rigid Frame Bridge |
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| An Ruimei, Liu Weihua, Niu Runming.Optimum Design for the Layout of Slant Legged Rigid Frame Bridge[J].Journal of Shijiazhuang Railway Institute,2005,18(4):22-25. |
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| Authors: | An Ruimei Liu Weihua Niu Runming |
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| Affiliation: | 1. School of Civil Engineering, Shijiazhuang Railway Institute, Shijiazhuang 050043, China; 2. School of Professional Technology, Shijiazhuang Railway Institute, Shijiazhuang 050043, China |
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| Abstract: | Static and dynamic optimum design for the layout of slant legged rigid frame mathematical programming. The target of static optimization is to minimize the average of bridge is studied by the squared sum of stresses while the target of dynamic optimization is to minimize the squared sum of natural vibration periods. The direct search method is used to seek the most optimum value. It is verified through an example that both the optimum design methods are feasible, and the optimized structures are more rigid. |
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| Keywords: | slant legged rigid frame bridge layout the static optimum design the dynamic optimum design the direct search method |
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