| 几种载荷同时作用下三铰拱轴线的形状优化 |
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| 引用本文： | 曹天捷.几种载荷同时作用下三铰拱轴线的形状优化[J].中国民航学院学报,2007,25(2):33-35. |
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| 作者姓名： | 曹天捷 |
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| 作者单位： | 中国民航大学交通工程学院 天津300300 |
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| 基金项目： | 天津鑫隆建设发展有限公司与中国民航大学合作项目 |
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| 摘 要： | 针对集中载荷、均布载荷以及填料重量载荷同时作用下的三铰拱结构,以高次抛物线为拱轴线方程,提出了优化拱轴线的方法,建立了以各控制截面弯矩平方和为最小的优化目标函数和约束方程。文中实例表明,通过对拱轴线的优化,可以有效地降低拱横截面上的最大弯矩,计算结果可供工程实际参考。
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| 关 键 词： | 三铰拱 拱轴线优化 高次抛物线 |
| 文章编号： | 1001-5000(2007)02-0033-03 |
| 修稿时间： | 2006-10-14 |
Optimization of Axial Curve of Three-Hinged Arch Under Action of Few Kind of Loads |
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| CAO Tian-jie.Optimization of Axial Curve of Three-Hinged Arch Under Action of Few Kind of Loads[J].Journal of Civil Aviation University of China,2007,25(2):33-35. |
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| Authors: | CAO Tian-jie |
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| Institution: | Transportation Engineering College, CAUC , Tianjin 300300, China |
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| Abstract: | The parabola of higher order is taken as the axial curve of three-hinged arch subjected to the action of concentrated forces,uniform distributed force and stuffing load.The method to optimize axial curve of the arch is presented,in which the objective function is the minimum of the quadratic sum of moments at every key cross section and the constraint condition is given.In the example it is proven that the optimization of axial curve may decrease the maximum moment along the arch effectively,and so the results calculated may be referenced in engineering. |
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| Keywords: | three-hinged arch optimization of axial curve of arch parabola of higher order |
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