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) ›› 2025, Vol. 44 ›› Issue (10): 107-114.DOI: 10.3969/j.issn.1674-0696.2025.10.14

• 桥梁与隧道工程 • 上一篇    

空间缆索悬索桥倾斜母线索鞍预偏量计算的改进方法

邓小康,胡梓航   

  1. (武汉科技大学 汽车与交通工程学院,湖北 武汉 430065)
  • 收稿日期:2024-11-11 修回日期:2025-02-26 发布日期:2025-11-06
  • 作者简介:邓小康(1985—),男,湖北武汉人,副教授,博士,主要从事桥梁结构理论计算方面的研究。E-mail:10261467@qq.com 通信作者:胡梓航(2001—),男,湖北咸宁人,硕士研究生,主要从事桥梁结构理论计算方面的研究。E-mail:2237435298@qq.com
  • 基金资助:
    武汉市城乡建设局科技计划项目(202043)

An Improved Method for Calculating Pre-offsetting of Leaning Busbar Saddle of Spatial Cable Suspension Bridge

DENG Xiaokang, HU Zihang   

  1. (School of Automotive and Traffic Engineering, Wuhan University of Science and Technology, Wuhan 430065, Hubei, China)
  • Received:2024-11-11 Revised:2025-02-26 Published:2025-11-06

摘要: 基于空间缆索悬索桥中倾斜母线索鞍预偏量的计算问题,提出了一种改进的计算方法。通过对索鞍处的力学与几何关系进行分析,构建了十二元的非线性方程组;通过牛顿-拉斐森算法对其求解,得出鞍预偏量;同时对算法原理、迭代过程及选取初值的方法进行了介绍,并通过算例证明了该方法的精准性和可靠性。相对于以往方法,所提出的计算方法能满足空间悬索桥施工的精度要求,计算更加简单,迭代更加快捷,为空间悬索桥的建设与优化提供有效的理论依据。

关键词: 桥梁工程; 倾斜母线索鞍; 预偏量; 牛顿-拉斐森法

Abstract: Aiming at the problem of calculating pre-offsetting of leaning busbar saddle in spatial cable suspension bridge, an improved calculation method was proposed. By analyzing the relationship between mechanics and geometry at the cable saddle, a set of twelve nonlinear equations were constructed, which were solved by Newton-Raphson algorithm, and the saddle pre-offsetting was obtained. At the same time, the principle of the algorithm, the iterative process and the method of selecting the initial value were introduced, and the accuracy and reliability of the proposed method were proved by the numerical examples. Compared to previous methods, the proposed calculation method can meet the accuracy requirements for the construction of spatial suspension bridge, with simpler calculation and faster iteration, which provides an effective theoretical basis for the construction and optimization of spatial suspension bridge.

Key words: bridge engineering; leaning busbar saddle; pre-offsetting; Newton-Raphson method

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