钢铁复合条的结构性能 钢筋化混凝土压缩部件:测试和数值建模
Ali Raza1, Khaled Mohamed Elhadi2, Muhammad Abid3
1Department of Civil Engineering, University of Engineering and Technology Taxila, 47050, Pakistan.
Heliyon
|February 23, 2024
概括
在混凝土中的回收轮胎增强了结构元素的柔性. 这项研究验证了玻璃纤维增强聚合物 (玻璃-FRP) 混凝土 (GRC) 元素的有限元模型,在更窄的FRP间距下显示出更好的性能.
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
- 环境工程 环境工程
背景情况:
- 废旧轮胎带来环境和健康风险,需要可持续管理.
- 混凝土中的回收为节约资源和减少废物提供了潜在的解决方案.
- 玻璃纤维增强聚合物 (玻璃-FRP) 被探索用于加强混凝土结构.
研究的目的:
- 在轴向压缩下研究玻璃纤维增强聚合物 (玻璃-FRP) 增强化混凝土 (GRC) 元素的结构行为.
- 开发和验证一个有限元模型来预测GRC元件性能.
- 评估钢筋比率和FRP结合距离对GRC元件柔性的影响.
主要方法:
- 制造9个GRC圆形压缩元件,具有不同的强化比率.
- 在单调的轴向压缩负载下测试GRC元件.
- 使用ABAQUS进行模拟的3D非线性有限元素模型 (FEM) 的开发.
- 参数研究分析不同GRC元素参数的影响.
主要成果:
- 观察到GRC元件的延展性增加,而玻璃-FRP纽带的间距减少.
- 加入化混凝土显著提高了GRC元件的可塑性.
- 沿着元素高度的垂直裂纹是损坏的主要方式.
- FEM预测显示与实验测试结果密切一致.
结论:
- GRC元件表现出增强的可塑性,特别是在优化玻璃-FRP钢筋方面.
- 开发的FEM为分析GRC结构行为提供了一个准确的工具.
- 一个新的经验方程,包括横向限制,为预测GRC元素性能提供了更高的准确性.
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