Flexural fatigue behavior of FRP-reinforced UHPC tubular beams

IF 5.6 1区工程技术 Q1 ENGINEERING, CIVIL

Engineering Structures Pub Date : 2025-02-08 DOI:10.1016/j.engstruct.2025.119848

Tian-Hui Fan , Jun-Jie Zeng , Xianwen Hu , Jun-Da Chen , Ping-Ping Wu , Hui-Tao Liu , Yan Zhuge

引用次数: 0

Abstract

Fiber-reinforced polymer (FRP) reinforced ultra-high-performance concrete (UHPC) tubular structures offer excellent corrosion resistance and mechanical properties, making them ideal for offshore construction applications such as bridge decks and girders. This paper investigates the flexural performance of FRP-reinforced UHPC tubular beams under static and fatigue loading, focusing on the effects of polyethylene (PE) and steel fibers. Results show that steel fiber-reinforced beams have higher load resistance under static loads, while both fiber types exhibit similar fatigue life under equivalent fatigue loads, despite differences in crack evolution and strain. Steel fibers reduce GFRP bar deformation but cause faster UHPC degradation. Fatigue tests revealed up to a 48.86 % reduction in residual load capacity for PE fiber-reinforced beams. A fatigue endurance limit of 0.5 Pu is recommended for FRP-UHPC tubular structures in fatigue-critical 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.