[1]陆飞,李爱群,程文瀼,等.用于黏结面钢筋应变测试的表面式密布型光栅[J].东南大学学报(自然科学版),2013,43(2):398-402.[doi:10.3969/j.issn.1001-0505.2013.02.032]
 Lu Fei,Li Aiqun,Cheng Wenrang,et al.Closely distributed surface optical fiber grating applicable to test the strain of rebar on bond interface[J].Journal of Southeast University (Natural Science Edition),2013,43(2):398-402.[doi:10.3969/j.issn.1001-0505.2013.02.032]
点击复制

用于黏结面钢筋应变测试的表面式密布型光栅()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第2期
页码:
398-402
栏目:
交通运输工程
出版日期:
2013-03-20

文章信息/Info

Title:
Closely distributed surface optical fiber grating applicable to test the strain of rebar on bond interface
作者:
陆飞李爱群程文瀼罗青儿
东南大学混凝土与预应力混凝土教育部重点实验室, 南京 210096
Author(s):
Lu Fei Li Aiqun Cheng Wenrang Luo Qinger
Key Laboratory of Concrete and Pre-stressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
光纤光栅 应变梯度 黏结滑移
Keywords:
optical fiber grating strain gradient bond slip
分类号:
U461;TP308
DOI:
10.3969/j.issn.1001-0505.2013.02.032
摘要:
通过在一根光纤上连续写入多个Bragg光栅制作成间距60mm、中心波长依次排列的密布型光栅,经纵向错开分布多根光纤进一步减小了光栅测点间距,满足了高应变梯度测试中测点密集布设的需求.将裸光纤光栅直接粘贴在钢筋纵肋侧面,减少了应变传递的中间环节,并通过固化后黏结剂与钢筋纵肋形成对光栅的保护,且不影响钢筋与混凝土的黏结.经钢筋混凝土黏结滑移试件拉拔试验验证,所有光栅均未损坏且全过程工作性能良好,在钢筋屈服后测得最大应变为4×10-3,并得到了锚固区域内不同深度钢筋的拉应变分布.该方法充分发挥了光纤光栅体积小、串联分布式测量导线少的特点,布设过程操作简单且不影响黏结面黏结效果,非常适用于钢筋混凝土的黏结滑移应变测试,对其他纤维材料等的黏结滑移测试也有很好的借鉴意义.
Abstract:
The closely distributed optical fiber grating(CDOFG)is manufactured by writing multiple Bragg gratings on a single optical fiber. The spacing between two close gratings is 60 mm and the center wavelengths are sequenced. To satisfy the requirements of high gradient strain tests, CDOFGs with staggered arrangement are attached parallel to each other. In the test, the naked optical fiber grating is directly bonded on the rebar to decrease the effect of stress transferring medium. The CDOFGs can be protected by the hardened glue and the longitudinal rib of rebar. To verify the validity of this test method, a bond-slip test between concrete and rebar was performed. All CDOFGs worked well during the loading process. For the rebar, the maximum monitored strain is 4×10-3 after the rebar yielded. The strain distributions of the rebar embedded in concrete was also obtained through the CDOFGs. In this monitoring method, CDOFGs are sensors with small section dimension and less leading fiber, and can be used for distributed testing with series connections. Hence, the layout process of this method is simple and easy for application. The CDOFGs can be bonded on rebar directly without decreasing the bond slip effect. It is proper to use CDOFGs for monitoring strains in bond-slip tests between concrete and rebar, which can also be regarded as a reference for bond-slip test between polymer reinforced fiber and concrete.

参考文献/References:

[1] 欧阳坚,程文瀼,陈忠范. 植筋粘结锚固性能的动力试验研究[J]. 工业建筑, 2010, 40(6): 68-73.
  Ouyang Jian, Cheng Wenrang, Chen Zhongfan. Dynamic test of property of chemical adhesive anchorage bar[J]. Industrial Construction, 2010, 40(6):68-73.(in Chinese)
[2] Rao Y J. Recent progress in applications of in-fiber Bragg grating sensors[J]. Optics and Lasers in Engineering, 1999, 31(4): 297-324.
[3] 李爱群, 周广东. 光纤Bragg光栅传感器测试技术研究进展与展望(Ⅰ): 应变、温度测试[J]. 东南大学学报:自然科学版, 2009, 39(6):1298-1306.
  Li Aiqun, Zhou Guangdong. Progress and prospect of fiber Bragg grating sensors measurement technology(Ⅰ): strain and temperature measurement[J]. Journal of Southeast University:Natural Science Edition, 2009, 39(6): 1298-1306.(in Chinese)
[4] 徐海伟, 曾捷, 梁大开, 等. 基于光纤传感网络的可变体机翼应变场数值模拟及实验验证[J]. 航空学报, 2011, 32(10):1842-1850.
  Xu Haiwei, Zeng Jie, Liang Dakai, et al. Numerical simulation and experimental study of strain field for morphing wings based on distributed fiber Bragg grating sensor network[J]. Acta Aeronautica et Astronautica Sinica, 2011, 32(10): 1842-1850.(in Chinese)
[5] Panopoulou A, Loutas T, Roulias D, et al. Dynamic fiber Bragg gratings based health monitoring system of composite aerospace structures[J]. Acta Astronautica, 2011, 69(7/8): 445-457.
[6] Yan C, Ferrarisa E, Geernaertb T, et al. Development of flexible pressure sensing polymer foils based on embedded fibre Bragg grating sensors[J]. Procedia Engineering, 2010, 5:272-275.
[7] 孙丽, 李宏男, 任亮. 光纤光栅传感器监测混凝土固化收缩实验研究[J]. 建筑材料学报, 2006, 9(2):148-153.
  Sun Li, Li Hongnan, Ren Liang. Experiment study on monitor of concrete shrink in the cure period with FBG sensor[J]. Journal of Building Materials, 2006, 9(2):148-153.(in Chinese)
[8] 潘建伍,曹双寅,何小元,等. 散斑干涉在纤维与混凝土粘结面位移场测量中的应用 [J]. 东南大学学报:自然科学版, 2003, 33(3):347-350.
  Pan Jianwu, Cao Shuangyin, He Xiaoyuan, et al. Application of ESPI in displacement measurement of bond area between FRP and concrete[J]. Journal of Southeast University:Natural Science Edition, 2003, 33(3):347-350.(in Chinese)
[9] Ugale S P, Mishra V. Modeling and characterization of fiber Bragg grating for maximum reflectivity[J]. Optik-International Journal for Light and Electron Optics, 2011,122(22): 1990-1993.
[10] 李尧, 赵鸿, 朱辰,等. 光纤光栅技术综述[J]. 激光与红外, 2006, 36(9): 749-754.
  Li Yao, Zhao Hong, Zhu Chen, et al. Study on fiber gratings technology[J]. Laser & Infrared, 2006, 36(9): 749-754.(in Chinese)
[11] 宁提纲, 裴丽, 简水生. 应变对啁啾光栅特性影响的研究[J]. 中国激光, 2002, A29(11):1011-1014.
  Ning Tigang, Pei Li, Jian Shuisheng. Study on strain effect of Chirped FBG characterization[J]. Chinese Journal of Lasers, 2002, A29(11):1011-1014.(in Chinese)
[12] 李剑芝, 姜德生. 载氢与光纤布喇格光栅[J]. 材料研究学报, 2006, 20(5): 518-522.
  Li Jianzhi, Jiang Desheng. Hydrogen loading and fiber Bragg grating[J]. Chinese Journal of Materials Research, 2006, 20(5): 518-522.(in Chinese)
[13] Li Qingbin, Li Guang, Wang Guanglun. Elasto-plastic bond mechanics of embedded fiber optic sensors in concrete under uniaxial tension with strain localization[J]. Smart Materials and Structures, 2003, 12(6): 851-858.
[14] 陆飞. 分布式光纤传感技术在土木工程结构监测中的应用研究[D]. 南京:东南大学土木工程学院,2007.

相似文献/References:

[1]何瑾琳,王劲松,孙小菡,等.一种新型布拉格光纤光栅色散补偿器[J].东南大学学报(自然科学版),1998,28(6):40.[doi:10.3969/j.issn.1001-0505.1998.06.008]
 He Jinlin,Wang Jinsong,Sun Xiaohan,et al.A Novel Dispersion Compensator Using Bragg Fiber Grating[J].Journal of Southeast University (Natural Science Edition),1998,28(2):40.[doi:10.3969/j.issn.1001-0505.1998.06.008]

备注/Memo

备注/Memo:
作者简介: 陆飞(1977—),男,博士,讲师,lufei@seu.edu.cn.
基金项目: 江苏省自然科学基金资助项目(BK2011085,BK2012345).
引文格式: 陆飞,李爱群,程文瀼,等.用于黏结面钢筋应变测试的表面式密布型光栅[J].东南大学学报:自然科学版,2013,43(2):398-402. [doi:10.3969/j.issn.1001-0505.2013.02.032]
更新日期/Last Update: 2013-03-20