摘要
针对黄土土样进行了不同干密度条件下的室内静三轴试验研究,并用Duncan-Chang模型分析了实验结果,讨论了黄土的强度及其切线变形模量与干密度的内在联系。结果表明:在其他条件相同时,黄土的粘聚力、内摩擦角及抗剪强度均随干密度的增大均呈增大趋势,且在干密度较大时表现为略微的应变软化,干密度较小时表现为应变硬化;黄土的切线变形模量随干密度的降低而减小,随应变的增加而减小,当轴向应变达到0.03左右时,切线变形模量几乎减小到零。
The tri-axial shear experiment of loess samples taken from the construction site was carried out,strength and deformation character of loess were studied using Duncan-Chang model and the relationship between those characters and dry density were discussed in this paper. It was shown that the cohesive strength,internal friction angle, shear strength and tangent modulus of loess increase with dry density, little strain softening is performed on large density while stain hardening is performed on small density. The tangent modulus of loess decreases with strain and equals to zero when axial strain is 0.03.
出处
《石河子大学学报（自然科学版）》
CAS
2009年第4期487-489,共3页
Journal of Shihezi University(Natural Science)
基金
建设部科学技术计划项目(06-K1-23)
福建省自然科学基金资助项目(2006J0445)
