基于模拟的研究关于NSM-CFRP加强在预应力混凝土T梁在地震负荷下的性能
Yanuar Haryanto1,2,3, Hsuan-Teh Hu3, Anggun Tri Atmajayanti4
1Department of Civil Engineering, Universitas Jenderal Soedirman, Purwokerto 53122, Indonesia.
Materials (Basel, Switzerland)
|September 27, 2025
概括
碳纤维增强聚合物 (CFRP) 的改装增强了预应力混凝土梁的性能.
科学领域:
- 土木工程 土木工程是指土木工程.
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
背景情况:
- 预压混凝土结构面临增加负载,退化和地震活动的挑战.
- 碳纤维增强聚合物 (CFRP) 的改造是结构更换的可行替代方案.
- 接近表面的 (NSM) CFRP是有效的加强混凝土元素.
研究的目的:
- 开发和验证一个有限元 (FE) 模型,用于模拟CFRP改装预应力混凝土T梁的地震性能.
- 研究CFRP嵌入深度和预应力水平对地震行为的影响.
- 评估NSM CFRP改装在增强结构弹性方面的有效性.
主要方法:
- 开发一个非线性FE模型,结合连贯的界面行为.
- 对FE模型与各种混凝土结构的实验数据的验证.
- 在不同的地震条件下对CFRP嵌入深度和预应力水平进行参数研究.
主要成果:
- 该FE模型准确地预测了低误差 (0.49%4.41%) 的最终负载.
- 完全嵌入的CFRP棒显著增加了最终负载能力 (高达16.84%).
- 半嵌入式CFRP棒提供了相似的好处,提供了实用优势.
结论:
- 碳复合纤维的改装,特别是完全深度嵌入和优化预应力,大大提高了抗震能力和能量消耗.
- 开发的FE模型是分析改装结构的可靠工具.
- NSM CFRP 后装备为改善现有预应力混凝土结构的抗震性能提供了具有成本效益的解决方案.
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