在轴向压缩下使用GFRP钢筋3D打印混凝土柱的性能
1Materials and Structures Innovation Group, School of Engineering, The University of Western Australia, Crawley, WA, Australia.
Scientific reports
|November 11, 2025
概括
混凝土3D打印 (3DCP) 对结构部件具有前景,在钢筋柱中提供延展性故障. 优化层间粘合和强化集成是未来应用的关键.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 增材制造 增材制造 增材制造
背景情况:
- 混凝土3D打印 (3DCP) 为快速,可持续的建设提供了机会,但由于混凝土的脆性和强化挑战,它在结构部件应用方面面临限制.
- 整合强化,如玻璃纤维增强聚合物 (GFRP) 条,对于提高3D打印结构元素的性能至关重要.
- 结合3DCP外和后安装增强的混合方法提供了一个潜在的解决方案,以克服当前的局限性.
研究的目的:
- 为了研究用GFRP条加强3D打印混凝土柱的轴向压缩性能.
- 为了比较3D打印柱子的结构行为与在轴承负载下传统造的柱子.
- 评估3DCP对故障机制和负载位移反应的影响.
主要方法:
- 使用混合式施工方法,创建具有3D打印混凝土外和造混凝土核心内的GFRP钢筋的柱子.
- 在轴向压缩下测试了四个柱子:三个是3D打印的,一个是传统造的,所有尺寸都相同.
- 通过负载位移反应,应变分布分析和故障模式的观察来评估性能.
主要成果:
- 与传统造的柱子相比,3D打印的柱子实现了大约50%的峰值负载.
- 3D打印的柱子呈现出渐进的可伸缩性故障,与传统标本中观察到的脆性故障形成鲜明对比.
- 该研究强调了层间粘合和强化集成作为未来优化关键领域.
结论:
- 3D打印的柱子展示了增强能量吸收和受控故障的潜力,在模块化建筑中提供了优势.
- 在3D打印的柱子中观察到的可塑性对于需要控制失效机制的应用来说是一个重要的发现.
- 为了可靠的结构应用,需要进一步的研究,重点是优化3DCP流程和加强集成.
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