Axial compression behavior of GFRP-steel composite tube confined seawater sea-sand concrete intermediate long columns

IF 5.6 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-03-24 DOI:10.1016/j.engstruct.2025.120157

Hao Fu , Jun Tian , Chee-Loong Chin , Hongbo Liu , Jinyun Yuan , Shengwen Tang , Rihao Mai , Xiaowei Wu

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引用次数: 0

Abstract

To address the issue of excessive river sand consumption and to leverage the cost-effectiveness of GFRP, this study develops a novel GFRP-steel composite tube confined seawater sea-sand concrete (GFCTSSC) column. This research presents an experimental investigation on the behavior of GFCTSSC intermediate long columns. The study reveals the working mechanism and failure modes of GFCTSSC. The effects of the number of GFRP layers and slenderness ratio on the mechanical properties of GFCTSSC are also examined. The results show that GFCTSSC intermediate long columns experience local longitudinal tearing of the GFRP layers and global buckling failure. The ultimate bearing capacity of the specimens increased by up to 12.05 % with GFRP confinement. The ultimate bearing capacity and strength enhancement index increased with more GFRP layers but decreased with higher slenderness ratios. However, the peak deflection exhibited positive correlations with both parameters. Finally, existing prediction models for ultimate bearing capacity were evaluated to assess their suitability for practical offshore engineering applications.

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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.