Crack Mapping on Shear-critical Reinforced Concrete Beams using an Open Source Digital Image Correlation Software
Crack Mapping on Shear-critical Reinforced Concrete Beams using an Open Source Digital Image Correlation Software
复制标题
使用开源数字图像相关软件对剪切临界钢筋混凝土梁进行裂缝测绘
DOI：
10.9744/ced.19.2.93-98
复制
发表时间：
2017
影响因子：
4.1
通讯作者：
P. Suprobo
中科院分区：
文献类型：
--
作者：
B. Suryanto;A. Tambusay;P. Suprobo
进行了3根钢筋混凝土梁（1根无抗剪钢筋，2根抗剪钢筋配筋率分别为0.4%和1.1%）的试验，研究了梁间距对梁的破坏形态、整体强度和延性的影响。结果表明，密排抗剪钢筋加固梁以延性方式破坏，而密排大间距、无密排抗剪钢筋加固梁仅表现出较小的延性，以脆性方式破坏。强调了最大间距规定的重要性，以确保箍筋有足够的锚固，并防止过早发生剪切破坏。采用开源数字图像相关软件Ncorr，一个普通的数码相机和智能手机的非接触式监控系统的应用程序被证明提供了一个可视化的开裂过程中的整个负载的历史。
Three reinforced concrete beams, one with no shear reinforcement and two others with shear reinforcement ratios of 0.4% and 1.1%, were tested to investigate the influence of stirrup spacing on the mode of failure, overall strength and ductility. The results show that the beam reinforced with closely-spaced shear reinforcement failed in a ductile manner, whereas the other two beams with large stirrup spacing and no stirrup exhibited only a small measure of ductility and failed in a brittle manner. The importance of the provisions of maximum spacing is highlighted to ensure adequate anchorage for the stirrups and prevent a premature shear failure to occur. The application of a non-contact monitoring system employing the open source digital image correlation software Ncorr, an ordinary digital camera and a smartphone is demonstrated to provide a visualization of the cracking process throughout the load history.