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泡甲板混凝土板的最佳设计:可使用性限制状态
Tomasz Gajewski1, Natalia Staszak2, Tomasz Garbowski3
1Institute of Structural Analysis, Poznan University of Technology, Piotrowo 5, 60-965 Poznan, Poland.
Materials (Basel, Switzerland)
|July 29, 2023
概括
这项研究通过减少材料使用和重量来优化泡甲板板. 这种创新方法实现了23%的混凝土重量减轻,同时达到曲限制.
科学领域:
- 结构工程 结构工程
- 优化方法 优化方法
- 材料科学 材料科学 材料科学
背景情况:
- 传统的优化方法与像泡甲板板这样的结构扎,原因是曲刚度不均.
- 泡甲板板利用空气腔减少死重,使结构分析和优化复杂化.
- 使用板或外元素的标准有限元分析不适合这些复杂的几何形状.
研究的目的:
- 开发一种有效的程序,以尽量减少泡甲板板块的重量.
- 为了应对优化具有可变横截面刚度的结构的挑战.
- 为了实现材料的节约,同时确保结构的可用性.
主要方法:
- 使用数值同质化来确定泡甲板板块的有效刚度.
- 优化过程中使用了带有约束的顺序二次编程.
- 几何参数 (石板和空隙) 的代校正,以满足折曲标准.
主要成果:
- 与最初的设计相比,混凝土重量大大减少 (约23%).
- 优化程序成功满足了曲的可用性极限状态要求.
- 该方法提供了一种快速有效的方法,以尽量减少泡甲板板材的材料消耗.
结论:
- 建议的优化程序,结合数值同质化和顺序二次编程,对于泡甲板板块是有效的.
- 这种方法可以节省大量的材料,而不会影响结构性能.
- 该研究展示了一种可行的方法来优化具有可变刚度的复杂结构元素.
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