交叉肋配置对高强度增强在混凝土中的债券滑动行为的影响
1School of Architecture Engineering, Xi'an Technological University, No. 2 Xuefuzhonglu Road, Weiyang District, Xi'an 710021, China.
Materials (Basel, Switzerland)
|July 30, 2025
概括
在高强度钢铁铁杆 (T63) 上增加交叉肋间距离对结合强度的影响很小,但增加了峰值滑动. 现有的模型准确地描述了T63和TB63钢筋的粘合滑动行为.
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:
- 研究高强度钢铁铁杆的机械性能对于混凝土结构至关重要.
- 了解钢筋和混凝土之间的粘合行为对于结构完整性至关重要.
研究的目的:
- 为了研究不同横肋间距离对630MPa高强度钢筋 (T63) 在混凝土中的粘合行为的影响.
- 为了评估现有的绑定滑动构成模型对修改后的钢筋设计的适用性.
主要方法:
- 设计了42个粘接标本,使用T63钢筋和T63钢筋,增加了横梁间距 (TB63).
- 进行了拉出测试,以确定故障模式,结合强度,相对滑动和结合滑动曲线.
- 分析了债券滑动曲线以评估模型的适用性.
主要成果:
- 横肋间距离增加30-50%对T63钢筋的结合故障模式和强度产生了很小的影响.
- 债券滑动曲线类似,TB63的峰值滑动增加了1.3到1.5倍.
- 中国代码 (GB 50010-2010) 对关键键纽带长度的计算适用于T63和TB63钢筋.
结论:
- 交叉肋间距离的修改对高强度钢筋的基本结合强度的影响有限.
- 现有的粘接滑动构成模型可靠地描述了T63钢筋的行为,其间隔有多种交叉肋间.
- 这些发现支持T63钢筋的应用,并为优化钢筋肋骨设计提供了洞察力.
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