Nokkrar lykiltækni fyrir þróun CSCS hópstaðalsins hönnunarstaðal fyrir stálvirki sem notar há-sterkt stál á 690 til 960 MPa

Kwok-Fai Chung^{1, 2} Yongjiu Shi³Lijun Wang⁴Xianglin Yu^{1, 2}Yifei Hu^{1, 2}Ho-Cheung Ho^{1, 2}

(1. Byggingar- og umhverfisverkfræðideild, The Hong Kong Polytechnic University; 2. Chinese National Engineering Research Center for Steel Construction (Hong Kong Branch), The Hong Kong Polytechnic University; 3. Department of Civil Engineering, Tsinghua University; 4. Huachengboyuan Engineering Technology Group)

Ágrip: With the recent development of China's steel construction towards high performance, lightweight, green and low carbon materials, demands for effective use of 690 to 960 MPa high strength steel are increasing. Under this circumstance, China Steel Construction Society (CSCS) has organized relevant institutions such as the Hong Kong Polytechnic University and Tsinghua University to develop the Group Standard "Standard for design of steel structures using 690 to 960 MPa high strength steel", (hereinafter referred to as "CSCS Group Standard"), in order to promote the high-quality development of the steel construction, and to facilitate standardized application and international adoption of high strength steel. Grounded in cutting-edge research, the CSCS Group Standard integrates expert insights on design methodology, construction practice, and welding technology for high strength 690 to 960 MPa steel. It adopts a systematic framework which is compatible and consistent to the design philosophy and formulations of European norms EN 1993-1 (Steel structures) and EN 1994-1 (Composite structures). This alignment facilitates Chinese engineers to get familiar with global standards, enabling effective collaboration with international counterparts through reciprocal understanding of Chinese practice. Evidently, the development of the CSCS Group Standard is an unprecedented practice to promote internationalization of Chinese standards, and technical compatibility and alignment among Chinese and foreign steel design standards. This plays an important leading role in accelerating the "going global" of Chinese steel products and technology, and their adoption in construction in the "Belt and Road" countries. This paper highlights essential technical contributions in both steel and steel-concrete composite structures presented in the CSCS Group Standard, in particular quality control of Chinese high strength steel, performance-based seismic design, full cross-section plastic design. It is prepared as a definitive reference for engineers to understand the Group Standard, and hence, to use it with confidence.