基于摄影测量的三轴试验测量研究  

Study on Triaxial Test Deformation Measurement by Photogrammetry

作　　者：牟春梅[1,2] 周子良 MU Chunmei;ZHOU Ziliang(College of Civil&Architecture Engineering,Guilin University of Technology,Guilin 541004;Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering,Guilin 541004)

机构地区：[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

出　　处：《土工基础》2021年第2期207-211,221,共6页Soil Engineering and Foundation

基　　金：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)。

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。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.

关 键 词：Iphone6手机 摄影测量 相机检校 三维重建 

分 类 号：TU411[建筑科学—岩土工程]