Strengthening of hot-rolled S355 steel I-section beams using WAAM high strength steel

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-05-27 DOI:10.1016/j.tws.2025.113437

Jiachi Yang, M. Ahmer Wadee, Leroy Gardner

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引用次数: 0

Abstract

An experimental investigation to assess the major-axis flexural behaviour of 12 hot-rolled S355 steel I-section beams strengthened by the addition of high strength steel (HSS) through wire arc additive manufacturing (WAAM) is presented. The geometry of the beam specimens was obtained by means of 3D laser scanning. The mechanical properties of both the hot-rolled and the WAAM steel were determined through monotonic tensile testing. Physical testing of the strengthened beam specimens was conducted. The results showed that the WAAM strengthening led to dramatic increases in bending resistances of between 35% and 80% under four-point bending, and of between 30% and 85% under three-point bending, for increases in mass of between just 5% and 15% respectively. At the same time, the specimens exhibited good ductility, despite the high strength of the WAAM additions. The presented experimental results, which are the first of their kind, successfully demonstrate the applicability of the proposed strengthening approach for both new and retrofitted steel beams, and the game-changing potential for enhancements in structural efficiency and reductions in embodied carbon in the construction industry.

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采用WAAM高强度钢对S355型钢热轧工字钢进行加固

通过电弧增材制造（WAAM）对12根添加高强度钢（HSS）的S355型钢热轧工字截面梁进行了主轴弯曲性能的试验研究。采用三维激光扫描的方法获得了光束试样的几何形状。通过单调拉伸试验确定了热轧钢和WAAM钢的力学性能。对加固梁试件进行了物理试验。结果表明，在四点弯曲条件下，WAAM的强度增加了35%至80%，三点弯曲条件下，强度增加了30%至85%，而质量增加仅为5%至15%。同时，尽管添加了高强度的WAAM，试件仍表现出良好的延性。所提出的实验结果是同类实验中的第一个，成功地证明了所提出的加固方法对新钢梁和改造钢梁的适用性，以及在建筑行业中提高结构效率和减少隐含碳的改变游戏规则的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.