Development and Achievements in the Engineering Application of 690-960 MPa High-Strength Steels

Chung Kwok-Fai; Ho Ho-Cheung; Hu Yifei

doi:10.13206/j.gjgS26091245

Volume 41 Issue 10

Oct. 2026

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Chung Kwok-Fai, Ho Ho-Cheung, Hu Yifei. Development and Achievements in the Engineering Application of 690-960 MPa High-Strength Steels[J]. STEEL CONSTRUCTION(Chinese & English), 2026, 41(10): 52-64. doi: 10.13206/j.gjgS26091245

Citation:

Chung Kwok-Fai, Ho Ho-Cheung, Hu Yifei. Development and Achievements in the Engineering Application of 690-960 MPa High-Strength Steels[J]. STEEL CONSTRUCTION(Chinese & English), 2026, 41(10): 52-64. doi: 10.13206/j.gjgS26091245

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Development and Achievements in the Engineering Application of 690-960 MPa High-Strength Steels

doi: 10.13206/j.gjgS26091245

Chung Kwok-Fai^1,2,3,
Ho Ho-Cheung^1,2,3,
Hu Yifei^1,2,3

1. Chinese Engineering Research Centre for Steel Construction (Hong Kong Branch), Hong Kong 999077, China;
2. Hong Kong Constructional Metal Structures Association, Hong Kong 999077, China;
3. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China

Received Date: 2026-09-12

Abstract

Abstract

At present， the global construction and infrastructure industry is rapidly transforming toward green， low-carbon， efficient， intensive， and intelligent operations. As a core component of modern infrastructure， steel structures serve as a pivotal driver for implementing the “carbon neutrality” strategy and advancing the modernization of the construction industry. Chinese high-strength steel grades such as Q690 and Q960 offer superior strength-to-weight ratios， high material efficiency， and low-carbon and energy-saving benefits， making them the preferred choices for large-scale， long-span， and lightweight infrastructure projects in the new era. However， for a long time， three major challenges have hindered the large-scale and international application of high-strength steel： the lack of unified international design standards， the technical complexity of welding high-strength steel， and conservative design methods. Consequently， its exceptional benefits and potential have not been fully realized. This paper systematically reviews major achievements， of the Chinese National Engineering Research Center for Steel Construction （Hong Kong Branch； CNERC）， including research and development， optimization of manufacturing processes， alignment with international standards， and the construction of landmark projects. This paper comprehensively shows the innovative breakthroughs and engineering applications of Chinese high-strength steel structures， and looks ahead to the future of the steel industry， so as to provide valuable experience for the upgrading of the Chinese steel structure industry and the export of Chinese steel structures worldwide.
- high-strength steel,
- welding technology,
- structural design,
- group standards,
- engineering application

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References(29)

References

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