关于FRP-Confined Concrete Core-Encased Rebar的歇斯底里行为研究
Jingzhou Lu1, Tong Mou1, Chen Wang1
1School of Civil Engineering, Yantai University, Yantai 264005, China.
Polymers
|June 28, 2023
概括
纤维增强聚合物限制混凝土内核封装钢筋 (FCCC-R) 与普通钢筋相比,具有更好的歇斯底里性质. 增加GFRP绕层和角度可以提高性能,而离心率可以降低性能.
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
- 结构工程 结构工程
背景情况:
- 纤维增强聚合物 (FRP) 封闭混凝土核心封装钢筋 (FCCC-R) 是一种新的复合结构,旨在提高钢筋性能.
- 这种结构旨在延迟钢筋曲,并使用高强度材料和FRP封闭改善机械性能.
研究的目的:
- 为了研究FCCC-R标本在各种循环负载条件下的歇斯底里行为.
- 为了比较FCCC-R在循环负荷下与普通钢筋的性能.
- 通过实验和数值方法分析不同参数对FCCC-R歇斯底里性质的影响.
主要方法:
- 在不同的循环负荷系统下对FCCC-R标本进行实验测试.
- 使用ABAQUS软件模拟FCCC-R行为的有限元模拟.
- 参数研究,以评估卷积层,卷积角度和铁杆偏心的影响.
主要成果:
- 与普通钢筋相比,FCCC-R表现出优越的歇斯底里性质,包括较高的压缩能力,应变,断裂应力和歇斯底里环面积.
- 歇斯底里性能随着增长的细度比率和约束直径而得到改善.
- 在循环负荷下,FCCC-R表现出比普通钢筋更大的延伸,尽管在单调张力下比钢筋更小.
- 在GFRP条带中增加的绕层和角度增强了歇斯底里性质,而增加的钢筋偏心率则降低了它们.
结论:
- 与普通钢筋相比,FCCC-R在歇斯底里性行为和机械性能方面提供了显著的改进.
- 设计参数,如GFRP绕配置和装甲杆放置,极大地影响FCCC-R.的歇斯底里性能.
- 有限元模拟准确预测实验结果,为进一步的设计优化提供了可靠的工具.
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