Li-Hui Wang , Wen-Hao Shi , Lan-Ping Qian , Yu-Lei Bai , Shi-Zhu Liu , Zhan-Qun Yang
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引用次数: 0
Abstract
The use of Fiber-Reinforced Polymer (FRP) bars as an alternative to steel bars addresses corrosion challenges in conventional concrete structures. However, the lower elastic modulus of FRP bars typically leads to excessive deformation and crack widening. This study investigates the synergistic effects of combining glass FRP (GFRP) bars with Engineered Cementitious Composites (ECC) to enhance the flexural performance of concrete beams. Seven beams were tested, including concrete, full-ECC, and composite beams with varying reinforcement ratios and configurations. Results demonstrated that ECC integration significantly improved load-bearing capacity (up to 6.2 % in composite beams), ductility (1.5 times higher than concrete beams), and crack control (crack widths reduced by 83 % in composite beams). A sectional analysis model accurately predicted flexural behavior, revealing that the tensile contribution of ECC diminishes at higher reinforcement ratios (>1.84 %), thereby serving as a safety reserve. An optimal ECC layer-to-beam height ratio of 0.3–0.4 was proposed to balance performance. This work advances the understanding of GFRP-ECC systems, offering practical insights for the design of durable and high-performance structures.
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.