东北大学学报(自然科学版) ›› 2025, Vol. 46 ›› Issue (11): 106-114.DOI: 10.12068/j.issn.1005-3026.2025.20240085

• 资源与土木工程 • 上一篇    下一篇

鱼腹梁支护跨中挠度的计算方法及其数值验证

王骋飞, 王述红(), 焦诗卉, 任明珠   

  1. 东北大学 资源与土木工程学院,辽宁 沈阳 110819
  • 收稿日期:2024-04-11 出版日期:2025-11-15 发布日期:2026-02-07
  • 通讯作者: 王述红
  • 作者简介:王骋飞(1999—),男,四川成都人,东北大学硕士研究生;
  • 基金资助:
    中国-中东欧国家高校联合教育项目(2021111);国家自然科学基金资助项目(52374157);中央高校基本科研业务费专项资金资助项目(N2301005);中央高校基本科研业务费专项资金资助项目(N2301006)

Calculation Method and Its Numerical Verification of Mid-span Deflection of Fish-Bellied Beam Support

Cheng-fei WANG, Shu-hong WANG(), Shi-hui JIAO, Ming-zhu REN   

  1. School of Resources & Civil Engineering,Northeastern University,Shenyang 110819,China.
  • Received:2024-04-11 Online:2025-11-15 Published:2026-02-07
  • Contact: Shu-hong WANG

摘要:

鱼腹梁支护变形计算是高次超静定问题,涉及应力应变的复杂关系.为建立适用于鱼腹梁支护结构体系变形的理论方法.本文在还原鱼腹梁支护受力和变形特征的基础上进行简化,提出鱼腹梁支护结构跨中挠度的计算方法.通过有限元软件对比多种工况,修正理论假设误差.得到一种较高精度的鱼腹梁支护跨中挠度计算方法.该方法可用于鱼腹梁支护变形情况的计算,能高效地预测鱼腹梁支护跨中变形情况.经多种方法验证表明,该方法误差较小且符合规律,可为相关工程提供参考.

关键词: 鱼腹梁支护, 超静定结构, 跨中挠度, 计算方法, 数值验证

Abstract:

The deformation calculation of fish-bellied beam support is a highly statically indeterminate problem, involving complex relationships between stress and strain. Therefore, a theoretical method suitable for the deformation of the fish-bellied beam support structure was needed. Based on the reduction of the force and deformation characteristics of the fish-bellied beam support, a calculation method for the mid-span deflection of the fish-bellied beam support structure was proposed. By comparing various working conditions using finite element software, the theoretical assumption error was corrected. A highly accurate calculation method for the mid-span deflection of fish-bellied beam support was obtained. This method can be used for calculating the deformation of fish-bellied beam support and can efficiently predict the mid-span deformation of fish-bellied beam support. Verification by various methods shows that this method has small errors and conforms to the rules, providing a reference for related engineering projects.

Key words: fish-bellied beam support, statically indeterminate structure, mid-span deflection, calculation method, numerical verification

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