| 基于混合变量的预张力结构优化设计研究 |
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| 引用本文： | 吴杰,杨永华.基于混合变量的预张力结构优化设计研究[J].结构工程师,2008,24(3). |
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| 作者姓名： | 吴杰 杨永华 |
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| 作者单位： | 1. 同济大学高等技术学院,上海,200092
2. 上海师范大学建筑工程学院,上海,200234 |
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| 摘 要： | 探讨了以预张力和截面尺寸为设计变量的预张力结构优化设计问题.建立了预张力结构优化设计的数学模型,提出了基于混合变量的预张力结构优化设计的两级算法.第一级优化以预张力作为设计变量,采用基于连续变量的数学规划法进行搜索,第二级优化在固定预张力状态下,在构件截面尺寸变量级采用离散变量优化设计方法求解.从文中算例可看出,该方法具有较好的计算效率和收敛性.
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| 关 键 词： | 预张力 优化 混合变量 相对差商法 |
Research on Optimum Design of Pretensioned Structures Based on Hybrid Variables |
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| WU Jie,YANG Yonghua.Research on Optimum Design of Pretensioned Structures Based on Hybrid Variables[J].Structural Engineers,2008,24(3). |
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| Authors: | WU Jie YANG Yonghua |
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| Affiliation: | WU Jie1 YANG Yonghua2 (1.College of Superior Technology,Tongji University,Shanghai 200070,China,2.College of Building Engineering,Shanghai Normal University,Shanghai 200234,China) |
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| Abstract: | The optimum design for pretensioned structures considering both the pretension force variables and the size variables was discussed.The mathematical model of optimum design was established for pretensioned structures and a two-level algorithm based on hybrid variables was proposed.At the first level,the pretension forces were chosen to be the design variables and the optimum design for pretension force based on continuous variable was carried out.At the second level,the cross-sectional areas were chosen to ... |
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| Keywords: | pretension force optimum hybrid variable relative difference quotient algorithm |
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