典型文献
Evolution of cracks in the shear bands of granite residual soil
文献摘要：
The evolution of shear bands and cracks plays an important role in landslides.However,there is no systematic method for classification of the cracks,which can be used to analyze the evolution of cracks in shear bands.In this study,X-ray computed tomography(CT)is used to observe the behavior of granite residual soil during a triaxial shear process.Based on the digital volume correlation(DVC)method,a crack classification method is established according to the connectivity characteristics of cracks before and after loading.Cracks are then divided into six classes:obsolete,brand-new,isolated,split,combined,and compound.With evolution of the shear bands,a large number of brand-new cracks accelerate the damages of materials at the mesoscale,resulting in a sharp decrease in strength.The volume of brand-new cracks increases rapidly with increasing axial strain,and their volume is greater than 50％when the strain reaches 12％,while the volume of compound cracks decreases from 54％to 21％.As cracks are the weakest areas in a material,brand-new cracks accelerate the development of shear bands.Finally,the coupling effect of shear bands and cracks destroys the soil strength.
文献关键词：
中图分类号：
作者姓名：
Chengsheng Li;Lingwei Kong;Ran An
作者机构：
Department of Civil and Environmental Engineering,Shantou University,Shantou,515063,China;State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,430071,China;College of Urban Construction,Wuhan University of Science and Technology,Wuhan,430065,China
文献出处：
引用格式：
[1]Chengsheng Li;Lingwei Kong;Ran An-.Evolution of cracks in the shear bands of granite residual soil)[J].岩石力学与岩土工程学报（英文版）,2022(06):1956-1966
A类：
obsolete
B类：
Evolution,cracks,shear,bands,granite,residual,soil,evolution,plays,important,role,landslides,However,there,no,systematic,method,classification,which,can,used,analyze,In,this,study,ray,computed,tomography,observe,behavior,during,triaxial,process,Based,digital,volume,correlation,DVC,established,according,connectivity,characteristics,before,after,loading,Cracks,then,divided,into,six,classes,brand,new,isolated,split,combined,compound,With,large,number,accelerate,damages,materials,mesoscale,resulting,sharp,strength,increases,rapidly,increasing,strain,their,greater,than,when,reaches,while,decreases,from,weakest,areas,development,Finally,coupling,effect,destroys
AB值：
0.505073
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