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在循环负荷下,用玄武岩棒增强的UHPC柱的结构性能
Taha A El-Sayed1, Muhammed S Fekry2, Hossam E Ahmed2
1Department of Civil Engineering, Shoubra Faculty of Engineering, Benha University, Cairo, Egypt. taha.ibrahim@feng.bu.edu.eg.
Scientific reports
|January 10, 2026
概括
用基岩纤维增强聚合物 (BFRP) 条增强的超高性能混凝土 (UHPC) 柱子在循环负荷下显示出增强的结构性能. 与钢条相比,BFRP钢筋提供了优越的抗拉强度,从而提高了柔性和能量消耗.
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
- 结构工程 结构工程
背景情况:
- 关于在循环负荷下用基岩纤维增强聚合物 (BFRP) 条增强的混凝土柱子的研究有限.
- 超高性能混凝土 (UHPC) 提供先进的机械性能.
- 基岩纤维增强聚合物 (BFRP) 条是传统钢筋的替代品,因为它们具有很高的抗拉强度和耐腐蚀性.
研究的目的:
- 研究在循环横向负载下用BFRP条加强的UHPC柱的结构性能.
- 为了比较由BFRP增强的UHPC柱子与钢筋增强的柱子的性能.
- 用先进的三维有限元素模型验证实验结果.
主要方法:
- 六个带有BFRP增强的UHPC柱子被造并测试在循环横向负荷下与恒定的轴负荷下.
- 标本尺寸:150x150毫米的截面,1500毫米的高度,在1000x250毫米的底座上支.
- 混凝土的压力强度在75到100MPa之间.
- 在ABAQUS中开发了三维非线性有限元素模型,用于模拟和验证.
主要成果:
- 与钢筋钢柱相比,用BFRP增强的UHPC柱体表现出优越的结构性能.
- BFRP柱显示出更可控的故障模式 (混凝土粉碎) 和增强的柔性和变形能力.
- 用BFRP增强的柱子承受了更高的负载,裂宽度更窄,并且表现出更好的循环稳定性和能量消耗.
- 数字模型与实验结果有很强的相关性,最终负载能力达到了约85%的一致性.
结论:
- BFRP条显著提高UHPC柱子的循环性能,性能优于传统钢筋.
- BFRP条的高拉伸强度和粘合特性有助于改善结构稳定性和能量消耗.
- 经过验证的有限元模型可以准确地预测BFRP增强的UHPC柱子在循环负荷下的行为.
关键词:
在阿巴库斯 (Abacus) 里.在BFRP中,使用的是BFRP.破裂的裂 破裂的裂循环负荷是指循环负荷.偏移 偏移 偏移 偏移灵活性,故障模式非线性FE分析非线性FE分析超高压电压 (UHPC) 是一种超高压电压.更多相关视频
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