A Review on the Research and Application of Steel-UHPC Composite Beam

Libo Yang

doi:10.13206/j.gjgS24022001

Volume 39 Issue 9

Sep. 2024

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Libo Yang. A Review on the Research and Application of Steel-UHPC Composite Beam[J]. STEEL CONSTRUCTION(Chinese & English), 2024, 39(9): 1-14. doi: 10.13206/j.gjgS24022001

Citation:

Libo Yang. A Review on the Research and Application of Steel-UHPC Composite Beam[J]. STEEL CONSTRUCTION(Chinese & English), 2024, 39(9): 1-14. doi: 10.13206/j.gjgS24022001

Libo Yang. A Review on the Research and Application of Steel-UHPC Composite Beam[J]. STEEL CONSTRUCTION(Chinese & English), 2024, 39(9): 1-14. doi: 10.13206/j.gjgS24022001

Citation:

Libo Yang. A Review on the Research and Application of Steel-UHPC Composite Beam[J]. STEEL CONSTRUCTION(Chinese & English), 2024, 39(9): 1-14. doi: 10.13206/j.gjgS24022001

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A Review on the Research and Application of Steel-UHPC Composite Beam

doi: 10.13206/j.gjgS24022001

Libo Yang¹

1. China Railway First Survey and Design Institute Group Co., Ltd., Xi'an 710043, China;
2. State Key Laboratory of Intelligent Construction and Maintenance for Extreme Environmental Geotechnical and Tunnel Engineering, Xi'an 710043, China

Received Date: 2024-02-20
Available Online: 2024-09-19

Abstract

Abstract

With the development of novel engineering materials, the rational application of high-performance materials in the field of civil engineering, alongside the evolution of structural forms, has become a significant pathway for innovations in steel-concrete composite beams. Steel-UHPC composite beams exhibit exceptional mechanical and durability properties, offering a promising pathway and solution for the innovative development of civil engineering structures in our country. In order to promote the transformation and upgrading of Chinese bridge engineering towards lightweight, high-performance, prefabricated, sustainable, and intelligent directions, this paper analyses the main research progress and future development directions of steel-UHPC composite beams. This is done by examining the current state of engineering applications, mechanical performance, and the mechanical behaviour of shear connectors from both domestic and international research and applications. Firstly, the paper reviews the current state of engineering applications of steel-UHPC composite beams in the field of bridge construction both domestically and internationally. These applications span from small and medium-span simply supported and continuous beam bridges to suspension and cable-stayed bridges with spans exceeding a thousand meters, showcasing the presence of steel-UHPC composite beams in various types of bridge structures. It indicates that with the rise of low-carbon construction globally and the introduction of China's "Transportation Powerhouse" strategy, steel-UHPC composite beam bridges are poised to encounter significant development opportunities. Secondly, the paper summarises the research progress on the mechanical performance of steel-UHPC composite beams under positive and negative bending moments, including the calculation theories for bending performance and finite element simulation methods. It indicates that the application of steel-UHPC composite beams can significantly enhance the structural crack resistance, flexural capacity, and flexural stiffness. This is beneficial for reducing the self-weight of the structure, facilitating prefabricated construction, and promoting the further development of high-performance engineering structures. Subsequently, the current state of research on various shear connectors was discussed, including conventional stud shear connectors, short stud shear connectors, large diameter shear connectors, grouped stud shear connectors, perforated steel plate shear connectors, and bolt shear connectors. It indicates that the rational selection and design of shear connectors can simultaneously address the dual requirements of interface connection reliability and the efficient utilisation of UHPC materials in steel-UHPC composite beams across various engineering contexts. Although the research on the force transmission mechanism and mechanical performance of steel-UHPC composite beam has been gradually developed, the systematic research is insufficient, and indepth systematic research should still be carried out around the basic theory and design method, so as to meet the needs of a large number of engineering applications. Finally, an outlook is provided on the key issues, main challenges, and future development trends related to the study of the load-bearing performance and design theory of steel-UHPC composite beams, research on high-strength steel-UHPC composite beams, the load-bearing performance of novel shear connectors, and the intelligent design of steel-UHPC composite beams. This is intended to offer innovative insights into the academic research and engineering applications of bridge engineering in China.
- steel-UHPC composite beam,
- engineering appliacation,
- mechanical performance,
- shear connectors,
- design theory,
- review and analysis

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References(130)

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