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Essential Technical Contributions to the Compilation of the CSCS Group Standard Standard for Design of Steel Structures Using 690 to 960 MPa High-Strength Steel
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摘要: 随着我国钢结构行业向高性能、轻量化、绿色低碳方向发展，高效使用690至960 MPa高强钢的需求与日俱增。为此，中国钢结构协会（CSCS）组织香港理工大学、清华大学等单位编制了团体标准《690至960 MPa高强钢结构设计标准》（简称《钢协团标》），以推动钢结构产业的高质量发展，并填补行业空白，促进高强钢的规范化应用与国际化推广。《钢协团标》集合现时全国钢结构专家在690至960 MPa高强钢方面的最新科研成果、设计方法、施工经验和焊接技术，形成了一部兼具系统性和先进性的设计标准。《钢协团标》借鉴了欧标EN 1993-1和EN 1994-1的设计理念、计算方法及相应表达形式，便于中国工程师熟悉国际通行标准，与国外工程师进行技术沟通与合作，同时有助于国外工程师更容易理解中国标准。这是促进中国标准国际化和中外钢结构工程建设标准互联互通的重要实践案例，为加快国产钢材钢构产品和技术“走出去”、推动“一带一路”国家基础设施建设发挥重要引领作用。重点阐述《钢协团标》制定过程中的几个关键技术，包括国产高强钢材的品质控制、抗震性能化设计、全截面塑性设计等，旨在为研究人员和工程技术人员准确理解并规范运用《钢协团标》提供理论依据与实践参考。Abstract: With the recent development of China’s steel construction towards high-performance， lightweight， green and low-carbon materials， demands for the 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 "the CSCS Group Standard"）， in order to promote the high-quality development of steel construction and to facilitate the 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 690 to 960 MPa high-strength steel. It adopts a systematic framework which is compatible with and consistent with 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 become familiar with global standards， enabling effective collaboration with international counterparts through reciprocal understanding of Chinese practices. Evidently， the development of the CSCS Group Standard is an unprecedented practice to promote the internationalization of Chinese standards and the technical compatibility and alignment between Chinese and foreign steel design standards. This plays an important leading role in accelerating the “going global” of Chinese steel products and techniques， as well as their adoption in construction projects across 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 the quality control of Chinese high-strength steel， performance-based seismic design， and full-section plastic design. It is prepared as a definitive reference for engineers to understand the Group Standard and hence to use it with confidence.
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