土工基础

土工基础 ›› 2021, Vol. 35 ›› Issue (2): 207-211.

• 测试技术 • 上一篇    下一篇

基于摄影测量的三轴试验测量研究

牟春梅1,2，周子良1   

  1. （1.桂林理工大学土木与建筑工程学院，广西桂林 541004；2.广西岩土力学与工程重点实验室，广西桂林 541004）
  • 收稿日期:2020-03-05 修回日期:2020-03-30 出版日期:2021-04-23 发布日期:2021-04-24
  • 作者简介:牟春梅（1968-)，女，副教授，研究方向为岩土工程。
  • 基金资助:
    国家自然科学基金(41867039);广西自然科学基金(2017GXNSFAA198213);广西岩土力学与工程重点实验室(2015-A-01-03)

Study on Triaxial Test Deformation Measurement by Photogrammetry

MU Chunmei1,2， ZHOU Ziliang1   

  1. (1.College of Civil & Architecture Engineering, Guilin University of Technology, Guilin 541004;
    2.Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin 541004)
  • Received:2020-03-05 Revised:2020-03-30 Online:2021-04-23 Published:2021-04-24

摘要： 为了更加准确的测量三轴土样的变形，介绍了一种基于摄影测量方法的三维测量技术。利用Iphone6手机进行图像数据采集，对目标物体张贴一些RAD编码点，通过相机检校、图像处理以及三维重构等步骤对三轴土样建立模型，经过对模型数据进行分析对比，得出变形,并进行了精度试验对其进行定量分析。通过试验证明此方法是可行、有效的，并且采用手机进行图像采集，简易方便、省时省力。

关键词: Iphone6手机, 摄影测量, 相机检校, 三维重建

Abstract: In order to accurately measure the sample deformation in the triaxial shear tests, this paper presents a deformation measurement by using photogrammetry method. The image data acquisition was performed by an IPhone 6 cell phone on the RDA codes on the triaxial shear soil samples. The sample deformation model was established through the camera calibration, image processing and three-dimensional deformation reconstruction so that the sample deformation could be obtained. The results indicate that this method is feasible and effective and the advantages of using IPhone 6 cell phone for the image acquisition are easy to use and save both time and cost.

Key words:  IPhone 6 cell phone, photogrammetry, camera calibration, threedimensional deformation reconstruction

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