对穿孔玻璃纤维增强聚合物板的强度提高技术的比较分析:粘合填充,螺栓增强和圆穿孔设计
Yiqing Dai1, Jiachun Chen2, Chao Yu1
1College of Civil Engineering, Fuzhou University, Fuzhou 350108, China.
Materials (Basel, Switzerland)
|September 27, 2025
概括
钢螺栓增强有效地提高了穿孔玻璃纤维增强聚合物 (GFRP) 复合材料的承载能力,这对于土木工程应用至关重要. 这种方法显著提高了强度,解决了GFRP结构部件的应力度问题.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 复合材料 复合材料 复合材料
背景情况:
- 玻璃纤维增强聚合物 (GFRP) 复合材料为民用结构提供出色的强度与重量比和耐腐蚀性.
- 用于公用事业的GFRP中的穿孔会产生应力度,在承载应用中构成安全风险.
- 关于穿孔GFRP的应力减轻,特别是机械紧固件的理解有限.
研究的目的:
- 调查粘合剂填充,螺栓增强和圆孔设计在减轻GFRP应力度方面的有效性.
- 为了提高土木工程中使用的穿孔GFRP板的强度和安全性.
- 分析穿孔几何形状,填料特性和螺栓预装载对GFRP性能的影响.
主要方法:
- 用不同的缓解技术对穿孔的GFRP板进行实验测试.
- 有限元分析 (FEA) 用于建模应力分布和度因子.
- 研究包括穿孔形状,填充材料模量和螺栓预负荷在内的变量.
主要成果:
- 钢螺栓增强显著提高了承载能力 (13.9%在突穿,几乎全强度横向).
- 粘合剂填充提供了最小的强度改善;圆孔与圆孔相比,圆孔的强度降低了38%.
- 应力度因子 (SCF) 在8毫米孔的峰值为5.13,并且在填充剂模量为30-40GPa时是最佳的.
结论:
- 钢螺栓增强是一种高效的方法,可以提高穿孔GFRP组件的结构完整性.
- 由于GFRP的异型性质,因此需要根据加载方向仔细选择加固策略.
- 结果为优化模块化建筑和其他土木工程项目的穿孔GFRP设计提供了关键数据.
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