[1]张丹,施斌,徐洪钟,等.BOTDR用于钢筋混凝土T型梁变形监测的试验研究[J].东南大学学报(自然科学版),2004,34(4):480-484.[doi:10.3969/j.issn.1001-0505.2004.04.013]
　Zhang Dan,Shi Bin,Xu Hongzhong,et al.Experimental study on the deformation monitoring of reinforced concrete T-beam using BOTDR[J].Journal of Southeast University (Natural Science Edition),2004,34(4):480-484.[doi:10.3969/j.issn.1001-0505.2004.04.013]
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BOTDR用于钢筋混凝土T型梁变形监测的试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第4期
页码:
480-484
栏目:
土木工程
出版日期:
2004-07-20

文章信息/Info

Title:
Experimental study on the deformation monitoring of reinforced concrete T-beam using BOTDR
作者:
张丹1;  施斌1;  徐洪钟1;  高俊启1;  朱虹2
1 南京大学地球科学系, 南京 210093; 2 东南大学土木工程学院, 南京 210096
Author(s):
Zhang Dan1;  Shi Bin1;  Xu Hongzhong1;  Gao Junqi1;  Zhu Hong2
1 Department of Earth Science, Nanjing University, Nanjing 210093, China
2 College of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
布里渊光时域反射计;  分布式光纤传感;  钢筋混凝土T型梁;  变形监测
Keywords:
BOTDR;  distributed optical fiber sensing;  reinforced concrete T-beam;  deformation monitoring
分类号:
TU317
DOI:
10.3969/j.issn.1001-0505.2004.04.013
摘要:
介绍了布里渊光时域反射计(BOTDR)的分布式光纤应变测量原理,并应用BOTDR技术对钢筋混凝土T型梁加载后的应变分布进行了测量.试验表明,BOTDR的应变测量结果与应变片的测量结果具有很好的一致性,并监测到当荷载加至25 kN时,钢筋混凝土梁出现了裂缝.此外,由BOTDR的实测应变分布还推算出了梁的挠度.这些结果显示出BOTDR作为先进的分布式光纤传感监测技术能够准确地测量出钢筋混凝土结构的应变分布,将其用于钢筋混凝土结构的变形监测和损伤识别是可行的.
Abstract:
The principle of Brillouin optical time domain reflectometer(BOTDR)is introduced and its application to the strain monitoring of the strain distribution of the reinforced concrete beam is studied. The experimental results show that the strains measured by BOTDR optical fiber sensor are in good agreement with those by strain gauges. By comparing the measured strains of the steel bar inside the concrete with those attached on the concrete surface at the same level, the damage was detected when the load reached 25 kN. And the deflection of the beam was also calculated with the strain distribution measured by BOTDR. Its concluded that, as an advanced distributed optical fiber sensing technology, BOTDR is good at measuring the strain distribution of reinforced concrete structures. It is accurate and feasible to be used in the field of deformation monitoring and damage detection of reinforced concrete structures.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家杰出青年科学基金资助项目(40225006)、教育部科学技术研究重点资助项目(01086).
作者简介: 张丹(1976—),男,博士生; 施斌(联系人),男,博士,教授,博士生导师,shibin@nju.edu.cn.
更新日期/Last Update: 2004-07-20