中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2014, Vol. 33 ›› Issue (2): 26-29.DOI: 10.3969/j.issn.1674-0696.2014.02.06

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基于机敏网的混凝土结构裂缝宽度监测方法研究

张奔牛1,范中华1,黄锐2,张旭1,杨光1,李星星1,吴韬1   

  1. 1. 重庆交通大学 信息科学与工程学院,重庆 400074; 2. 西南政法大学 刑事侦查学院,重庆 401120
  • 收稿日期:2013-05-02 修回日期:2013-12-25 出版日期:2014-04-15 发布日期:2015-01-22
  • 作者简介:张奔牛( 1975—) ,男,重庆人,教授,博士,主要从事桥梁结构健康监测、传感与检测技术方面的研究。E-mail: benniuzhang@gmail.com。
  • 基金资助:
    重庆高校创新团队建设项目( KJTD201306) ; 重庆市自然科学基金项目( cstc2013jcyjA0893 and jA30016) ; 山区桥梁与隧道工程国 家重点实验室培育基地开放基金项目( CQSLBF-Y14-7) ; 国家内河航道整治工程技术研究中心开放基金项目( SLK2014B05)

Crack Width Monitoring of Concrete Structures Based on Smart Film

Zhang Benniu1,Fan Zhonghua1,Huang Rui2,Zhang Xu1,Yang Guang1,Li Xingxing1,Wu Tao1   

  1. 1. School of Information Science & Engineering,Chongqing Jiaotong University,Chongqing 400074,China; 2. Criminal Investigation College,Southwest University of Political Science & Law ,Chongqing 401120,China
  • Received:2013-05-02 Revised:2013-12-25 Online:2014-04-15 Published:2015-01-22

摘要: 机敏网裂缝监测方法能够对混凝土结构的裂缝长度、位置和形状等进行长期有效监测。为实现对混凝土结构 裂缝宽度的监测,在实际的机敏网结构中增加多组横向的机敏线组,其中每一组横向机敏线组都由多根直径不同的 机敏线组成。由于不同直径的机敏线具有不同的极限拉应变,理论推导和实验均证明了机敏线的极限拉应变与结 构裂缝宽度成正比,因此可以通过机敏线的极限拉应变间接地计算出裂缝的宽度。

关键词: 桥梁工程, 结构健康监测, 裂缝宽度, 机敏网, 极限拉应变

Abstract: Smart film monitoring method has the capability of monitoring the important features of concrete structures effectively, such as occurrence,location,shape,length and development of initial crack. Aiming to monitor the crack width of concrete structures,the improved smart film adopted several groups of bunched magnetic wires which were horizontally placed. Each group of bunched magnetic wires was composed by a few of magnetic wires with different diameters,and each magnetic wire had different ultimate tensile strain. Therefore,the direct proportion between the ultimate tensile strain of magnetic wires and the crack width of structures was verified by the theoretical derivation and experiments. And the crack width can be indirectly calculated by the ultimate tensile strain of magnetic wires.

Key words: bridge engineering, structural health monitoring, crack width, smart film, ultimate tensile strain

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