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Spatial combined cable element for cable-supported bridges

机译：用于电缆支撑桥的空间组合电缆元件

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摘要

Purpose The purpose of this paper is to analyze the cable-supported bridges more efficiently by building the finite element model with the spatial combined cable element.Design/methodology/approach The spatial combined cable element with rigid arms and elastic segments was derived. By using the analytical solution of the elastic catenary to establish the flexibility matrix at the end of the cable segment and adding it to the flexibility matrix at the ends of the two elastic segments, the flexibility matrix at the end of the cable body is obtained. Then the stiffness matrix of the cable body is established and the end force vector of cable body is given. Using the displacement transformation relationship between the two ends of the rigid arm, the stiffness matrix of the combined cable element is derived. By assigning zero to the length of the elastic segment(s) or/and the rigid arm(s), many subdivisions of the combined cable element can be obtained, even the elastic catenary element.Findings The examples in this field and specially designed examples proved the correctness of the proposed spatial combined cable element.Originality/value The combined cable element proposed in this study can be used for the design and analysis of cable-stayed bridges. Case studies show that it is able to simulate cable accurately and could also be used to simulate the suspenders in arch bridges as well in suspension bridges.
机译：目的本文的目的是通过使用空间组合缆索单元建立有限元模型来更有效地分析斜拉桥。设计/方法/方法推导了具有刚性臂和弹性段的空间组合缆索单元。通过使用弹性悬链线的解析解在电缆段的末端建立柔韧性矩阵，并将其添加到两个弹性段的末端的柔韧性矩阵中，可以得到电缆主体末端的柔韧性矩阵。然后，建立索体的刚度矩阵，并给出索体的端力矢量。利用刚性臂两端之间的位移变换关系，得出组合式电缆元件的刚度矩阵。通过为弹性段或/和刚性臂的长度赋零，可以得到组合式电缆元件的许多细分，甚至是弹性悬链线元件。证明了所提出的空间组合式缆索单元的正确性。原始技术/价值本研究中提出的组合式缆索单元可用于斜拉桥的设计和分析。案例研究表明，它能够精确地模拟电缆，还可以用于模拟拱桥和吊桥中的吊杆。

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  • 来源
    《Engineering Computations》 |2019年第1期|204-225|共22页
  • 作者

    Wei Jiandong; Guan Manyu; Cao Qi; Wang Ruibin;

  • 作者单位

    Zhengzhou Univ, Sch Water Conservancy & Environm, Zhengzhou, Henan, Peoples R China;

    Zhengzhou Univ, Sch Water Conservancy & Environm, Zhengzhou, Henan, Peoples R China;

    Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian, Peoples R China;

    Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cable element; Cable-supported bridge; Elastic catenary; Rigid-arm; Stay cable; Suspender;

    机译：电缆元件;电缆支撑桥;弹性悬链线;刚性臂;斜拉索;吊杆;

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