西南交通大学学报 2010, 45(6) 914-919 DOI:   10.3969/j.issn.0258-2724.2010  ISSN: 0258-2724 CN: 51-1277/U

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本文关键词相关文章
玄武岩纤维筋
玄武岩纤维灢光纤筋
布里渊光时域分析
玄武岩纤维灢钢丝复合筋
力学性能试验
本文作者相关文章
顾兴宇
沈新
陆家颖
PubMed
Article by Gu, X. Y.
Article by Chen, X.
Article by Liu, J. Y.

玄武岩纤维筋拉伸力学性能试验研究

顾兴宇, 沈新, 陆家颖

东南大学交通学院,江苏南京210096

摘要

为探讨玄武岩纤维(BFRP)筋的力学性能,分别用引伸计和光纤2种应变测试方法对其基本力学性能
进行了研究.由于BFRP筋的抗拉弹性模量低,在BFRP筋中掺入钢丝,研制成了高模量的玄武岩纤维灢钢丝复
合筋.试验结果表明:BFRP筋的应力灢应变曲线为直线;BFRP筋的抗拉弹性模量仅为钢筋的23%,用光纤应变
检测的BFRP筋的抗拉弹性模量比用引伸计应变检测的高12.3%;BFRP筋的抗拉弹性模量随直径增大逐渐降
低;掺杂钢丝可以显著提高BFRP筋的抗拉弹性模量.

关键词 玄武岩纤维筋   玄武岩纤维灢光纤筋   布里渊光时域分析   玄武岩纤维灢钢丝复合筋   力学性能试验  

Experimental Investigation on Tensile Mechanical Properties of BFRP Bars

GU Xingyu, SHEN Xin, LU Jiaying

(School of Transportation, Southeast University, Nanjing 210096, China)

Abstract:

In order to probe into the mechanical properties of basalt fiber reinforced polymer (BFRP) bars, basic mechanical properties of BFRP bars were investigated by two strain test methods: the extensometer and optical fiber detection techniques. A new type of bar, called as basalt fiber-steel wires composite (BFSWC) bar with high elastic modulus was developed by adding steel wires into BFRP bars for low tensile elastic modulus of BFRP bars. The experimental result indicates that the stress-strain curve of a BFRP bar is linear, its elastic modulus is only about 23% elastic modulus of a steel bar, and the elastic modulus tested by the optical fiber detection technique is 12.3% higher than that obtained by the extensometer. BFRP bar's elastic modulus becomes low as its diameter gets big, and adding steel wires into a BFRP bar can significantly improve its elastic modulus.

Keywords: basalt fiber reinforced polymer (BFRP) bar   basalt fiber-optical fiber composite bar   BOTDA (Brillouin optical time domain analysis)   basalt fiber-steel wire composite bar   mechanical property test   
收稿日期 2010-01-18 修回日期  网络版发布日期  
DOI: 10.3969/j.issn.0258-2724.2010
基金项目:

空军后勤部研究基金资助项目(KH0805019)

通讯作者: 沈新(1986-),男,硕士研究生,研究方向为路基路面工程新结构与新材料,电话:025灢83795505,
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