| 组合双轴对称工字形钢梁截面优化设计 |
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| 引用本文： | 黄冀卓,王湛.组合双轴对称工字形钢梁截面优化设计[J].钢结构,2008,23(2):39-42. |
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| 作者姓名： | 黄冀卓 王湛 |
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| 作者单位： | 1. 汕头大学,土木工程系,汕头,515063
2. 华南理工大学,土木工程系,广州,510641 |
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| 基金项目： | 广东省自然科学基金
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广东省科技厅科技计划 |
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| 摘 要： | 提出双轴对称钢梁截面设计中判别强度控制和刚度控制的临界跨高比的概念,并推导了组合双轴对称工字形钢梁在不同腹板高厚比下的腹板高度与截面模量、截面惯性矩的关系式。在此基础上,给出了组合双轴对称工字形钢梁截面的优化设计步骤,并根据算例对优化设计步骤进行验证。算例结果表明,该优化步骤是快速与准确的,优化效果明显,可方便地应用于组合双轴对称工字形钢梁截面的设计。
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| 关 键 词： | 工字形钢梁 优化设计 强度控制 刚度控制 |
| 修稿时间： | 2007年11月15 |
OPTIMIZATION DESIGN OF SECTION FOR BISYMMETRIC BUILT-UP STEEL I-SHAPED BEAMS |
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| Huang Jizhuo,Wang Zhan.OPTIMIZATION DESIGN OF SECTION FOR BISYMMETRIC BUILT-UP STEEL I-SHAPED BEAMS[J].Steel Construction,2008,23(2):39-42. |
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| Authors: | Huang Jizhuo Wang Zhan |
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| Affiliation: | Huang Jizhuo (Department of Civil Engineering,Shantou University Shantou 515063) Wang Zhan (Department of Civil Engineering,South China University of Technology Guangzhou 510641) |
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| Abstract: | The concept of critical span-to-high ratio used to differentiate between the strength control and the stiffness control in section design of bisymmetric steel beams was brought up. The relational expressions of web height to section modulus (or inertia moment) for bisymmetric built-up steel I-shaped beams were derived in terms of different values of web slenderness ratio. And then, an optimization design method for bisymmetric built-up steel I-shaped beams was presented, and one example was given to verify ... |
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| Keywords: | I-shaped beam optimization design strength control stiffness control |
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