RC圆形,方形和矩形柱子的应力和拉伸关系外部被纤维绳子包裹
Qudeer Hussain1, Anat Ruangrassamee2, Tidarut Jirawattanasomkul3
1Center of Excellence in Earthquake Engineering and Vibration, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand.
Scientific reports
|February 20, 2024
概括
低成本的天然纤维增强绳索聚合物 (FRRP) 显著提高了混凝土柱的强度和拉伸能力. 大麻FRRP表现出优于棉花FRRP的性能,并开发了新的方程来预测各种形状的行为.
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:
- 钢筋混凝土 (RC) 柱是关键的结构元素.
- 改善RC柱的压力行为对于结构完整性至关重要.
- 天然纤维增强聚合物提供了一个可持续且具有成本效益的解决方案.
研究的目的:
- 研究天然纤维增强绳索聚合物 (FRRP) 在增强圆形,方形和矩形RC标本的压缩行为方面的有效性.
- 为了比较大麻FRRP和棉花FRRP在混凝土封闭中的性能.
- 开发新的分析模型来预测FRRP限制混凝土的机械性能.
主要方法:
- 在单调的轴向压缩下测试42个有圆形,方形和矩形截面的钢筋混凝土样本.
- 在标本上应用三层大麻和棉花FRRP限制.
- 对不同形状和FRRP类型的压力强度和拉伸改善的比较分析.
主要成果:
- FRRP显著改善了RC柱的压力强度和应变.
- 使用三层大麻FRRP的圆形标本显示压力强度增加了200%,应变增加了270%.
- 大麻FRRP优于棉花FRRP,圆形标本由于应力度而比方形和矩形标本产生更大的改进.
结论:
- 天然FRRP是一种可行的和有效的材料,用于增强RC柱的压缩行为.
- 现有的分析模型不足以预测FRRP限制混凝土的性能.
- 开发并验证了新的方程,用于预测大麻和棉花FRRP限制混凝土在各种截面中的压力强度和应变.
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