[1]张敏,吴宏伟.离心试验中基于目标摄像的位移量测技术[J].深圳大学学报理工版,2008,25(2):134-139.
 ZHANG Min and NG Charles W.W..Displacement measurement using video photography of targets in centrifuge tests[J].Journal of Shenzhen University Science and Engineering,2008,25(2):134-139.
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离心试验中基于目标摄像的位移量测技术()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第25卷
期数:
2008年2期
页码:
134-139
栏目:
土木建筑工程
出版日期:
2008-04-30

文章信息/Info

Title:
Displacement measurement using video photography of targets in centrifuge tests
文章编号:
1000-2618(2008)02-0134-06
作者:
张敏1吴宏伟2
1)深圳大学土木工程学院,深圳市土木工程耐久性重点实验室,深圳 518060;
2)香港科技大学土木工程系, 香港
Author(s):
ZHANG Min1 and NG Charles W.W.2
1) College of Civil Engineering,Shenzhen Municipal Key Laboratory on Durability of Civil Engineering,Shenzhen University,Shenzhen 518060,P.R.China
2)Department of Civil Engineering,Hong Kong University of Science and Technology,Hong Kong,P.R.China
关键词:
离心模拟目标摄像位移量测图像分析地面沉降
Keywords:
centrifuge modelingvideo photography of targedisplacement measurementimage analysisground setllement
分类号:
TU 43;TU 433
文献标志码:
A
摘要:
采用目标摄像技术在离心试验中进行土体位移测量.通过摄像机拍摄跟踪土中目标点,运用中心定位方法确定目标点的坐标.用两时间点的坐标可得该时间段内的位移矢量.介绍了测量系统和相应的纠错方法.通过一组标定试验,得出该量测方法的精度和准确度为1 mm.且在同一个离心试验中,测定土体位移与其他传感器结果一致,证明该方法运用于离心机试验有效.
Abstract:
Image analysis with video photography of targets was used in centrifuge tests to measure soil displacements.By tracing targets in soil using video cameras,the coordinates of targets were obtained. The displacements can be achieved by analyzing a pair of images.The setup of the measurement system and the method for correcting errors are presented. By calibration tests,both the accuracy and precision of the method are about 1 mm.The result of a consolidation test in centrifuge is comparable to the measurement of local transducers,demonstrating the usefulness of this method in centrifuge tests.

参考文献/References:

[1]Roscoe K H,Arthur J R F,James R G.采用X-射线方法确定土体变形[J].土木工程和公共设施评论,1963(58):873-876(英文版).
[2]Garnier J,Chambon P,Ranaivoson D,等.进行位移测量的计算机图像处理[C]//离心机大会会议论文.鹿特丹:Balkema出版社,1991:543-550(英文版).
[3]Taylor R N,Grant R J,Robson S,等.土体模型中确定平面和三维位移的图像分析系统[C]//离心机大会会议论文集.鹿特丹:Balkema出版社,1998:73-78(英文版).
[4]吴宏伟,Van Laak P,Tang W H,等.香港土工离心机[C]//第3届国际软土工程会议.香港:[出版者不详],2001:225-230(英文版).
[5]White D J,Take W A,Bolton M D.采用颗粒图像分析技术和摄像测量技术的土体变形测量[J].Géotechnique,2003,53(7):619-631(英文版).
[6]White D J.压入桩的行为研究[D].剑桥:剑桥大学,2002(英文版).
[7]Lovy D.WinDIG 2.5版,数据数字化程序[D].瑞士:日内瓦大学,1994 (英文版).
[8]张敏.可液化松散土边坡及其土钉加固的离心机模拟[D].香港:香港科技大学,2006(英文版).

[1]Roscoe K H,Arthur J R F,James R G.The determination of strains in soils by an X-ray method[J].Civil Engineering and Public Works Review,1963(58):873-876.
[2]Garnier J,Chambon P,Ranaivoson D,et al.Computer image processing for displacements measurement[C]//Proceedings of Centrifuge ′91.Rotterdam:Balkema Publishers,1991:543-550.
[3]Taylor R N,Grant R J,Robson S,et al.1998.An image analysis system for determining plane and 3-D displacements in soil models[C]//Proceedings of Centrifuge ′98.Rotterdam:Balkema Publishers,1998:73-78.
[4]NG C W W,Van Laak P,Tang W H,et al.The Hong Kong Geotechnical Centrifuge[C]//Proceedings of 3rd International Conference Soft Soil Engineering.Hong Kong:[s.n.],2001:225-230.
[5]White D J,Take W A,Bolton M D.Soil deformation measurement using particle image velocimetry (PIV) and photogrammetry[J].Géotechnique,2003, 53(7): 619-631.
[6]White D J.An Investigation into Behaviour of Pressed-in piles[D].Cambridge:University of Cambridge,2002.
[7]Lovy D.WinDIG Version 2.5,A Data Digitalization Program[D].Switzerlands:University of Geneva,1994.
[8]ZHANG Min.Centrifuge Modelling of Potentially Liquefiable Loose Fill Slopes with and without Soil Nails[D].Hong Kong:The Hong Kong University of Science and Technology,2006.

备注/Memo

备注/Memo:
收稿日期:2007-09-29;修回日期:2008-02-18
基金项目:国家自然科学基金资助项目(50708060);深圳大学科研启动基金资助项目(200719)
作者简介:张敏(1978-),女(汉族),陕西省汉中市人,深圳大学讲师、博士.E-mail:cezhangm@163.com
通讯作者:吴宏伟(1962-),男(汉族),香港科技大学教授、博士生导师.E-mail:cecwwng@ust.uk
更新日期/Last Update: 2008-05-10