期刊文献+

基于数字照相的砂土剪切变形模式的试验研究 被引量:18

Experimental Investigation of Shear Deformation Patterns in Sands Based on Digital Image Correlation
下载PDF
导出
摘要 利用自行研制的数字照相量测软件包PhotoInfor和自行设计的大型剪切试验装置,在不同围压下,对砂土的剪切变形模式以及土体变形局部化的发生、发展和演变过程进行了全面观测.结果表明:砂土变形区域呈纺锤型,由多条曲线形大变形带和带间小变形区组成,不同围压下的剪切变形模式基本相近;土体最终形成的剪切带与初期发生的局部变形带并不完全重合;土体剪切变形可分为初期全域快速弹性变形、中期局部区域塑性变形与后期剪切带内集中塑性变形三个阶段. This paper presents a series of sandbox experiments of extensional deformation in Toyoura sands. The image analysis software package PhotoInfor, which was developed by the authors, was used to investigate the shear patterns and the evolution of the local deformation in sands under different confining pressures. The results show that. the deformation zone looks like fusiform, and can be divided into a number of large deformation bands and small deformation blocks in between the bands; more than one shear bands are not at the same location of the initial big deformation zone, in other words, the intense shear deformation zones migrate during shearing; and the soil deformation can be classified into three stages: initial stage of elastic deformation in the whole specimen, middle stage of elastic deformation in localized regions, and the final stage of plastic deformation in the final shear band.
出处 《同济大学学报(自然科学版)》 EI CAS CSCD 北大核心 2007年第5期685-689,共5页 Journal of Tongji University:Natural Science
基金 教育部科学技术研究重点资助项目(106085) 中国矿业大学科技基金资助项目(2005B003)
关键词 砂土 剪切试验 数字照相 数字图像相关 剪切带 变形模式 granular soil shear test digital photogrammetry digital image correlation shear band deformation patterns
  • 相关文献

参考文献8

  • 1Vardoulakis H C.Plane strain compression experiments on watersaturated fine grained sand[J].Geotechnique,1991,41(1):49.
  • 2Alshibli K,Batiste S N,Sture S.Strain localization in sand:plane strain versus triaxial compression[J].Journal of Geotechnical and Geoenvironmental Engineering,2003,129 (6):483.
  • 3Nakamura T,Mitachi T,Ikeura I.Direct shear method as a means for estimating geogrid-sand interface shear-displacement behavior[J].Soils and Foundations,1999,39(4):1.
  • 4Shibuya S,Mitachi T,Tamate S.Interpretation of direct shear box testing of sands as quasi-simple shear[J].Geotechnique,1997,47(4):769.
  • 5Rechenmacher Amy L,Finno Richard J.Digital image correlation to evaluate shear banding in dilative sands[J].Geotechnical Testing Joumal,2004,27(1):13.
  • 6Wolf H,Konig D,Triantafyllidis T.Experimental investigation of shear band patterns in granular material[J].Journal of Structural Geology,2003,25(8):1229.
  • 7李元海,朱合华,上野胜利,望月秋利.基于图像相关分析的砂土模型试验变形场量测[J].岩土工程学报,2004,26(1):36-41. 被引量:89
  • 8李元海,靖洪文,曾庆有.岩土工程数字照相量测软件系统研发与应用[J].岩石力学与工程学报,2006,25(z2):3859-3866. 被引量:63

二级参考文献13

  • 1芮嘉白,金观昌,徐秉业.一种新的数字散斑相关方法及其应用[J].力学学报,1994,26(5):599-607. 被引量:102
  • 2上野胜利 李元海 等.Application of Cross-Correlation method with sub-pixel accuracy in two dimensional model tests[A]..日本实验力学协会2002年度会议论文[C].和歌山大学,2002.256-261.
  • 3上野 胜利 高岛 伸哉 等.画像解析による简便な砂の变位场计测方法[J].日本土木学会论文集,2000,(666):339-344.
  • 4[1]Mochizuki A,Mikasa M.Deformation measurement of slop models in centrifuge[A].In:Proceedings of Int.Symposium on Geotechnical Centrifuge Model Testing[C].Tokyo:[s.n.],1984.139-148.
  • 5[2]Jun O,Toshifumi M,Yuzo O.Application of X-ray CT method for characterization of failure in soils[J].Soils and Foundations,2000,40(2):111-118.
  • 6[3]Pierre J,Mauro F.Interferometric imaging using holographic and speckle techniques.image technologies:the techniques and applications in civil engineering[A].In:Proceedings of the Second International Conference[C].Rotterdam:A.A.Balkerma,1997.235-254.
  • 7[4]Takashi M,Takayuki I,Kazuo K.Observation of grain motion in the interior of a PSC test specimen by laser-aided tomography[J].Soils and Foundations,2002,42(5):27-36.
  • 8[9]Alshibli K.Batiste S N,Sture S.Strain localization in sand:plane strain versus triaxial compression[J].Journal of Geotechnical and Geoenvironmental Engineering,2003,129(6):483-494.
  • 9[11]Radoslaw L,Michalowsk,Lei Shi.Deformation patterns of reinforced foundation sand at failure[J].Journal of Geotechnical and Geoenvironmental Engineering(ASCE),2003,129(6):439-449.
  • 10[18]Li Y H,Zhu H H,Jing H W.Experimental observation of shear deformation patterns in sands using digital photogrammetry[J].Geotechnical Special Publication,ASCE,2006,149:120-127.

共引文献133

同被引文献181

引证文献18

二级引证文献88

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部