| 数字近景摄影测量在钢桁架节点试验中的应用 |
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| 引用本文： | 李万庆,续玉倩,孟文清,郭庆林,王睿.数字近景摄影测量在钢桁架节点试验中的应用[J].河北工程大学学报,2018,35(1):42-47. |
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| 作者姓名： | 李万庆 续玉倩 孟文清 郭庆林 王睿 |
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| 作者单位： | 河北工程大学管理工程与商学院;河北工程大学土木工程学院 |
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| 基金项目： | 河北省自然科学基金资助项目（E2016102079） |
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| 摘 要： | 针对钢桁架节点变形场测量问题,以某输煤栈桥钢桁架节点试验为依托,利用数字近景摄影测量技术进行位移测量。首先运用定点拍摄方法获取变形图像,然后进行图像预处理与像素坐标提取,对测点的位移变化规律进行分析。结果表明:近景摄影测量技术在钢桁架节点的全场变形测试中测量精度能够满足试验需要,并且该技术具有简便的操作性及很强的实用性。
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| 关 键 词： | 管桁架节点 近景摄影测量技术 变形 数字图像处理 |
| 收稿时间： | 2017/11/9 0:00:00 |
Application of digital close-range photogrammetry in steeltruss node test |
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| Authors: | LI Wanqing XU Yuqian MENG Wenqing GUO Qinglin and WANG Rui |
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| Affiliation: | School of Management Engineering and Business, Hebei University of Engineering, Handan 056038, Hebei, China,School of Civil Engineering, Hebei University of Engineering, Handan 056038, Hebei, China) zhuyaocongshi,School of Civil Engineering, Hebei University of Engineering, Handan 056038, Hebei, China) zhuyaocongshi,School of Civil Engineering, Hebei University of Engineering, Handan 056038, Hebei, China) zhuyaocongshi and School of Civil Engineering, Hebei University of Engineering, Handan 056038, Hebei, China) zhuyaocongshi |
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| Abstract: | In view of the deformation field measurement problem of steel truss node,in this paper,we carried out a certain coal conveying trestle steel truss node test and performed displacement measurement by using the digital close-range photogrammetric technology. Firstly,we took fixed-point shooting method to obtain the deformation image. Secondly,we conducted the image pre-processing and the pixel coordinate extraction. And finally,we analyzed the displacement change rule of the measurement point. The results show that the measurement accuracy from the close-range photogrammetric technology can meet the needs of the whole deformation test of steel truss node experiment,and the close-range photogrammetric technology has characteristic of simple operation and strong practicability. |
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| Keywords: | pipe truss node close-range photogrammetry deformation digital image processing |
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