China forges ahead with technological innovations in large-span arch bridge construction

Engineering

 

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The main span of the Tian’e Longtan Bridge is 600 m long, establishing a new world record for concrete arch bridges. This surpasses the previous record by 155 m, which is equivalent to the cumulative increase in the span of concrete arch bridges over the past century.

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Credit: Jielian Zheng

The field of bridge engineering is witnessing a transformative era, as China leads the way with its recent advancements in constructing large-span arch bridges. Jielian Zheng, the member of the Chinese Academy of Engineering from Guangxi University, has authored a research article in Engineering, titled “Recent Construction Technology Innovations and Practices for Large-Span Arch Bridges in China.” The article elucidates the significant strides made in the construction of concrete-filled steel tubular (CFST) and steel-reinforced concrete (SRC) arch bridges, which have been propelled by technological breakthroughs over the past three decades.

Academician Zheng’s research underscores the pivotal role of innovation in enhancing the efficiency, safety, and economy of arch bridge construction. The article details the construction of two landmark bridges—the Pingnan Third Bridge with a 560-meter span and the Tian’e Longtan Bridge, which boasts an impressive 600-meter span. These projects exemplify the cutting-edge techniques that have been developed and implemented under Zheng’s guidance, marking a new chapter in the history of bridge engineering.

The technological innovations highlighted in the article include cable-stayed fastening-hanging cantilevered assembly methods for CFST bridges, and for SRC bridges, the development of new encasing concrete materials and advanced pouring techniques. These innovations have not only addressed the inherent challenges associated with arch bridge construction but have also significantly reduced construction risks and costs.

China’s achievements in arch bridge construction are a testament to the nation’s unwavering commitment to pushing the boundaries of infrastructure development. The progress made in this field has set a new benchmark for global bridge engineering practices, inspiring engineers worldwide to pursue excellence in their craft.

The article concludes by outlining future research directions and development opportunities for CFST and SRC arch bridges. It emphasizes the need for continuous innovation and the importance of addressing new challenges as they arise in the field of bridge construction.

China’s progress in arch bridge construction is a shining example of how engineering innovation can redefine the limits of infrastructure development. This research article is showcasing China’s leadership in the field of bridge construction and the potential for further advancements in the future.

The paper “Recent Construction Technology Innovations and Practices for Large-Span Arch Bridges in China,” authored by Jielian Zheng. Full text of the open access paper: https://doi.org/10.1016/j.eng.2024.05.019. For more information about the Engineering, follow us on X (https://twitter.com/EngineeringJrnl) & like us on Facebook (https://www.facebook.com/EngineeringJrnl).

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Journal

Engineering

DOI

10.1016/j.eng.2024.05.019 

Article Title

Recent Construction Technology Innovations and Practices for Large-Span Arch Bridges in China