中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2021, Vol. 40 ›› Issue (11): 101-105.DOI: 10.3969/j.issn.1674-0696.2021.11.15

• 交通基础设施工程 • 上一篇    

复合圆曲线散索鞍设计位置的改进算法

邓小康,邓恒耀   

  1. (武汉科技大学 汽车与交通工程学院,湖北 武汉 430081)
  • 收稿日期:2020-04-01 修回日期:2020-05-08 发布日期:2021-11-24
  • 作者简介:邓小康(1985—),男,湖北钟祥人,高级工程师,博士,主要从事大跨径桥梁方面的研究。E-mail:10261467@qq.com

Improved Algorithm for Design Position of Composite Circular Curve Splay Saddle

DENG Xiaokang, DENG Hengyao   

  1. (College of Automotive and Transportation Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China)
  • Received:2020-04-01 Revised:2020-05-08 Published:2021-11-24

摘要: 基于对悬索桥主缆线形和主缆与索鞍的力学、几何关系的分析,提出了一种复合圆曲线散索鞍设计位置的改进算法。算法利用主缆和索鞍几何条件建立方程,仅需采用二分法求解一元非线性方程即可得到复合圆曲线散索鞍的位置。算法给出了二分法求解非线性方程的求解区间,计算过程无需任何初值均能保证求解收敛。算例表明,改进算法精确度较高。

关键词: 桥梁工程;散索鞍;主缆;复合圆曲线;鞍座设计位置

Abstract: Based on the analysis of the main cable shape, the mechanical and geometric relationship between the main cable and the cable saddle of the suspension bridge, an improved algorithm for the design position of the compound circular curve splay saddle was proposed. The geometric conditions of the main cable and saddle were used to establish the equations, and the position of the compound circular curve splay saddle could be obtained only by solving the one-dimensional nonlinear equation with dichotomy. The proposed algorithm gives the solution interval of dichotomy to solve the nonlinear equation, and the calculation process can ensure the solution convergence without any initial value. The examples show that the improved algorithm has better accuracy.

Key words: bridge engineering; splay saddle; main cable; compound circular curve; saddle design position

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