不同季节荷载及支座运动下输电塔损伤的非线性修复分析：修复措施及强度恢复评估

IF 6.4 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-03-19 DOI:10.1016/j.engstruct.2025.120029

Yuto Yamano , Kumpei Tsuji , Hiroki Mizoe , Tasuku Muroi , Yuki Yamakawa

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引用次数: 0

摘要

输电塔的构件损坏和倒塌是由于强风和冰雪堆积造成的过大载荷以及地面变形造成的支撑移动造成的。这种过度负荷的特点因季节而异。本文采用三维非线性有限元分析方法，研究了某输电塔在不同季节荷载和支座运动作用下构件损伤的进展和极限强度的退化。一系列损伤分析表明，构件损伤分布随损伤原因和损伤程度的不同而不同。我们还定量评估了损伤后极限强度的退化。此外，我们尝试通过更换受损构件或移除支撑运动来进行修复模拟，以评估修复后的强度恢复情况。分析结果表明，选择合适的修复方法和释放构件的残余压应力是实现有效强度恢复的关键。

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Nonlinear repairing analysis of damaged transmission tower under different seasonal loads and support movement: Assessment of repair measures and strength recovery

Member damage and collapse of transmission towers are caused by excessive loads due to strong winds and ice/snow accretion, as well as support movement due to ground deformation. The characteristics of such excessive loads vary significantly depending on the season. In this study, we examined the progress of member damages and the degradation of ultimate strength of a transmission tower subjected to different seasonal loads and support movement using 3D nonlinear finite element analysis. A series of damage analyses revealed that the distribution of member damages varies depending on the causes and degrees of damage. We also evaluated quantitatively the degradation of ultimate strength after damages. Further, we attempted a repair simulation by replacing damaged members or removing support movement to assess the strength recovery after repair. The analysis results implied that choosing the appropriate repair method and releasing compressive residual stress in members are essential for effective strength recovery.

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来源期刊

Engineering Structures 工程技术-工程：土木

CiteScore

10.20

自引率

14.50%

发文量

1385

审稿时长

67 days

期刊介绍： Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.