| 工程结构用FRP筋的力学性能 |
| |
| 引用本文： | 朱虹,钱洋.工程结构用FRP筋的力学性能[J].建筑科学与工程学报,2006,23(3):26-31. |
| |
| 作者姓名： | 朱虹 钱洋 |
| |
| 作者单位： | 1. 东南大学,土木工程学院,江苏,南京,210096
2. 东南大学,土木工程学院,江苏,南京,210096;东南大学,建筑设计研究院,江苏,南京,210096 |
| |
| 基金项目： | 国家自然科学基金重点项目(50238030)，国家高技术研究发展计划(“863”计划)项目(2001AA336010) |
| |
| 摘 要： | 通过分析工程结构用纤维增强塑料(FRP)筋的组成和物理力学性能特点,对比FRP筋性能和钢筋性能的不同之处,指出了FRP筋在工程结构中的适用性和应用前景。通过试验研究,分析了局部弯折对芳纶纤维增强塑料(AFRP)筋极限抗拉强度、加载速率和加载历史对编织型芳纶纤维筋(FiBRA)型AFRP筋弹性模量,以及应力水平对FiBRA型AFRP筋松弛率的影响,建立了规格为FA11的FiBRA型AFRP筋的松弛率计算公式。结果表明,局部弯折可能导致FRP筋的极限抗拉强度下降,FiBRA型AFRP筋编织状的成型特征造成其弹性模量在张拉过程中是渐趋稳定的,并且造成其总松弛量较大,工程应用时需充分考虑这些因素。
|
| 关 键 词： | 纤维增强塑料 芳纶纤维增强塑料 极限抗拉强度 弹性模量 松弛 改性 |
| 文章编号： | 1673-2049(2006)03-0026-06 |
| 修稿时间： | 2006年6月25日 |
Mechanics Performance of FRP Tendons Used in Engineering Structure |
| |
| ZHU Hong,QIAN Yang.Mechanics Performance of FRP Tendons Used in Engineering Structure[J].Journal of Architecture and Civil Engineering,2006,23(3):26-31. |
| |
| Authors: | ZHU Hong QIAN Yang |
| |
| Abstract: | Through analyzing the composition and physics mechanics performance characteristic of FRP tendons,the difference between FRP tendon and steel tendon was compared,the applicability and the future of FRP tendon in engineering structure were pointed out.Through experiments study,the effects of local bending to ultimate tensile strength,loading velocity rate and process to elastic modulus of FiBRA style AFRP tendons were analyzed,and stress levels to relaxation of FiBRA style FRP tendons were researched,and the formulas for calculating the relaxation rate of FA11,one spec of FiBRA tendon,were obtained.The results show that local bending may reduce the ultimate strength of FRP tendons, and the weave of FiBRA style AFRP tendon leads that the elastic modulus can only stabilize gradually and the total relaxation is more.These shortcomings should be noticed cautiously in practice. |
| |
| Keywords: | FRP AFRP ultimate tensile strength elastic modulus relaxation modification |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
