Eccentric compression behavior of tree-like concrete-filled steel tubes

IF 5.6 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-03-24 DOI:10.1016/j.engstruct.2025.120171

Yang Li , Dan Gan , Xuhong Zhou , Huihui Huang

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引用次数: 0

Abstract

Tree-like columns are architecturally attractive, and are widely used in large-span structures. This investigation explored the eccentric compression behavior of tree-like concrete-filled steel tubular (CFST) columns based on a combination of full-scale testing, theoretical analysis, and high-fidelity finite element analysis. Equations for predicting member internal-forces and the column lateral-deformation were derived theoretically, so the design of tree-like CFST columns was decomposed to individual members including primary CFST branches, secondary branches, and petal-shaped CFST trunks. Parametric finite element analysis was conducted to investigate the effects of the trunk height-width ratio, load eccentricity, concrete-filling range, and biaxial eccentricity; three potential damage positions obtained from the parametric analysis corresponded to those obtained from the theoretical derivation. The second-order effect in the aspect of trunk height-width ratio and load eccentricity was explored; the suitable concrete-filling range was proposed.

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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.