光测法在混凝土表面裂缝测量中的应用
|
摘要
针对采集到的裂缝图像特征,提出一种裂缝定量分析法,即根据裂缝图像灰度。利用otsu提出的类判别法计算出图像分割的最佳阈值,进而提取图像的裂缝信息,然后通过编制的图像处理程序分析出研究区域的裂缝宽度及其方差.实验结果表明:该定量分析法处理图像效果好,数据稳定,相关的计算结果可为实际工程的安全可靠性评估提供准确的基础数据.经实践验证,该方法简单易行.
The cracking width is the main foundation of damage diagnosis for concrete construction.To measure concrete surface crack the optical method is one of the significant means among non-destruction tests,which remains the internal structure and normal function of concrete.A quantitative analysis method is described in this paper.According to the gray scale of crack image,the best threshold is obtained through the analysis method of distinguishing category proposed by Otsu.Based on the threshold,the crack feature can be quickly picked up.Furthermore,by taking advantage of the image processing technology,the cracking parameters in this region can also be calculated,including the width of every point and the dispersion degree.Experiments show that the effects of the image processing based on this method are fine and the relevant results provide the basic data for safety evaluation of civil projects.Practice proves the feasibility of this method.
The cracking width is the main foundation of damage diagnosis for concrete construction.To measure concrete surface crack the optical method is one of the significant means among non-destruction tests,which remains the internal structure and normal function of concrete.A quantitative analysis method is described in this paper.According to the gray scale of crack image,the best threshold is obtained through the analysis method of distinguishing category proposed by Otsu.Based on the threshold,the crack feature can be quickly picked up.Furthermore,by taking advantage of the image processing technology,the cracking parameters in this region can also be calculated,including the width of every point and the dispersion degree.Experiments show that the effects of the image processing based on this method are fine and the relevant results provide the basic data for safety evaluation of civil projects.Practice proves the feasibility of this method.
引文
[1]姚继涛,马永欣,建筑物可靠性鉴定和加固-基本原理和方法[M].北京:科学出版社,2003,1-10.
[2]Kima Kyung-Suk,Kangb Ki-Soo,Kangc Young-June,et al.Analysis of an internal crack of pressure pipeline using ESPI and shearography[J].Optics&Laser Technology,2003,35:639-643.
[3]Vogel H J,Hoffmann H,Roth K.Studies of crack dynamics in clay soil I.experimental methods,results,and morphological quantification[J].Geoderma,2005,125:203-211.
[4]陆玲,陈国明,戴扬.水下结构物裂缝特征定量分析与测量[J].计算机测量与控制,2004,12(1):10-12.Lu Ling,Chen Daoming,Dai Yang.Quantification analysis and measurement of crack feature of underwater structure[J].Computer Measurement&Control.2004,12(1):10-12.(in Chinese)
[5]施树明,初秀民,王荣本.沥青路面破损图像测量方法研究[J].公路交通科技,2004,24(7):12-16.Shi Shuming,Chu Xiumin,Wang Rongben.Research on asphalt pavement surface distress image measuring method[J].Journal of Highway and Transportation Research and Development,2004,24(7):12-16.(in Chinese)
[6]蓝宗建,梁书亭,孟少平编著.混凝土结构设计原理[M].南京:东南大学出版社,2002,220-241.
[7]候宝隆,蒋之峰编译.混凝土的非破损检测[M].北京:地震出版社,1992,1-3.
[8]耿飞,钱春香.图像分析技术在混凝土收缩裂缝定量测试与评价中的应用研究[J].东南大学学报(自然科学版),2003,33(6):773-776.Geng Fei,Qian Chunxiang.Image analysis technique for quantitative testing and evaluation of plastic shrinkage cracks in concrete[J].Journal of Southeast University(Natural Science Edition),2003,33(6):773-776.(in Chinese)
[2]Kima Kyung-Suk,Kangb Ki-Soo,Kangc Young-June,et al.Analysis of an internal crack of pressure pipeline using ESPI and shearography[J].Optics&Laser Technology,2003,35:639-643.
[3]Vogel H J,Hoffmann H,Roth K.Studies of crack dynamics in clay soil I.experimental methods,results,and morphological quantification[J].Geoderma,2005,125:203-211.
[4]陆玲,陈国明,戴扬.水下结构物裂缝特征定量分析与测量[J].计算机测量与控制,2004,12(1):10-12.Lu Ling,Chen Daoming,Dai Yang.Quantification analysis and measurement of crack feature of underwater structure[J].Computer Measurement&Control.2004,12(1):10-12.(in Chinese)
[5]施树明,初秀民,王荣本.沥青路面破损图像测量方法研究[J].公路交通科技,2004,24(7):12-16.Shi Shuming,Chu Xiumin,Wang Rongben.Research on asphalt pavement surface distress image measuring method[J].Journal of Highway and Transportation Research and Development,2004,24(7):12-16.(in Chinese)
[6]蓝宗建,梁书亭,孟少平编著.混凝土结构设计原理[M].南京:东南大学出版社,2002,220-241.
[7]候宝隆,蒋之峰编译.混凝土的非破损检测[M].北京:地震出版社,1992,1-3.
[8]耿飞,钱春香.图像分析技术在混凝土收缩裂缝定量测试与评价中的应用研究[J].东南大学学报(自然科学版),2003,33(6):773-776.Geng Fei,Qian Chunxiang.Image analysis technique for quantitative testing and evaluation of plastic shrinkage cracks in concrete[J].Journal of Southeast University(Natural Science Edition),2003,33(6):773-776.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心