Experiment on cracks in reinforced concrete beams based on digital image correlation technology

被引：0
|
作者：
Xiong E.-G. [1 ]
Gong Z.-W. [1 ]
Luo J.-M. [1 ]
Fan T.-J. [1 ]
机构：
[1] School of Civil Engineering, Chang′an University, Xi′an
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2023年 / 53卷 / 04期
关键词：
crack; DIC technology; reinforced concrete beam; shear-span ratio; structural engineering;
D O I：
10.13229/j.cnki.jdxbgxb.20210849
中图分类号：
学科分类号：
摘要：
In order to investigate the influence of shear span ratio on the initiation and propagation of cracks in reinforced concrete beam，according to Code for Design of Concrete Structures，a group of reinforced concrete beams with shear span ratios of 4.0，3.0，2.5 and 2.0 were designed. Through the digital image correlation （Digital image correlation， DIC） technology， the whole process of crack initiation and evolution was captured for the reinforced concrete beam components under the monotonic loading. The distribution and width of the cracks in RC beams were reproduced in different loading levels. The test results are compared with the calculated values by the use of major design codes. The results show that the DIC technology is a realistic test observation method；the distribution of cracks has a very important relationship with the shear span ratio，and the larger cracks of the test beam are mainly distributed in the pure bending section. At the same time，the position and width of the cracks are almost evenly distributed within the pure bending section. This is basically consistent with the crack calculation formula given in major design codes. © 2023 Editorial Board of Jilin University. All rights reserved.
引用
收藏
页码：1094 / 1104
页数：10
相关论文
共 19 条
  • [1] Shih M H, Sung W P., Application of digital image correlation method for analyzing crack variation of re⁃ inforced concrete beams, Sadhana, 38, 4, pp. 723-741, (2013)
  • [2] Fayyad T M, Lees J M., Experimental investigation of crack propagation and crack branching in lightly re⁃ inforced concrete beams using digital image correlation, Engineering Fracture Mechanics, 182, pp. 487-505, (2017)
  • [3] Zhao Ya-jun, Dou Yuan-ming, Cui Li-jie, Investiga⁃ tion of the reinforced concrete crack propagation law on the DIC method, Concrete, 38, 5, pp. 1-4, (2017)
  • [4] Golewski G L., Measurement of fracture mechanics parameters of concrete containing fly ash thanks to use of Digital Image Correlation (DIC) method, Mea⁃ surement, 135, pp. 96-105, (2019)
  • [5] Li D, Huang P, Chen Z, Et al., Experimental study on fracture and fatigue crack propagation processes in concrete based on DIC technology, Engineering Fracture Mechanics, 235, (2020)
  • [6] Fan Tuan-jie, Experimental and numerical simula⁃ tion of cracks in RC beams based on DIC technology, (2020)
  • [7] Xu Shao-bo, Gu Guo-qing, Yu Xiao-juan, Et al., Design and application of mechanical testing system based on digital image correlation, Journal of Yancheng Institute of Technology(Natural Science Edition), 31, 4, pp. 69-72, (2018)
  • [8] Yamaguchi I, Yokota M, Ida T., Monitoring of paint drying process by digital speckle correlation, Opti⁃ cal review, 14, 6, pp. 362-364, (2007)
  • [9] Peters W H, Ranson W F., Digital imaging tech⁃ niques in experimental stress analysis, Optical En⁃ gineering, 21, 3, pp. 427-431, (1981)
  • [10] Cui Xin-nan, Wang Xu-guang, Wang Yin-jun, Et al., External crack propagation of concrete surface un⁃ der explosive loading, Explosion and Shock Waves, 40, 5, pp. 25-35, (2020)
12