华侨大学学报（自然科学版）2024，Vol.45Issue(3)：332-338,7.DOI:10.11830/ISSN.1000-5013.202311028
花岗岩残积土抗剪强度与微观结构特征
Shear Strength and Microstructure Characteristics of Granite Residual Soil
摘要
Abstract
The triaxial test and electron microscopy scanning test are conducted on the granite residual soil sample with different water mass fractions(water content)and different compaction degrees.The relationship between the shear strength characteristic and the microscopic pore structure of the soil samples are explored,and the shear strength attenuation mechanism of the granite residual soil is revealed from microscopic view.The experiment results show that the stress-strain curves of the granite residual soil sample have the strain hardening characteristic.The shear strength decreases with the increase of water content and increases with the increase of compaction degree.Under the low confining pressure stress,the granite residual soil samples are more sensitive to the water content and the compaction degree.From microscopic view,the proportion of mesopores and macropores in granite residual soil samples increases with increasing water content and decrea-ses with increasing compaction degree.关键词
花岗岩残积土/抗剪强度/微观结构/水的质量分数(含水率)/压实度Key words
granite residual soil/shear strength/microstructure/water mass fraction(water content)/com-paction degree分类
建筑与水利引用本文复制引用
李扬波,李如玥,石熊,陈怿旸,吴波,林炼伟..花岗岩残积土抗剪强度与微观结构特征[J].华侨大学学报（自然科学版）,2024,45(3):332-338,7.基金项目
国家自然科学基金资助项目(52278397,52168055) （52278397,52168055）
江西省教育厅科学技术资助项目(GJJ210705) （GJJ210705）
