摘要
介绍了常规三轴试验方法,分析了由此测出的强度指标的特点,探讨了模拟基坑开 挖实际应力变化过程的卸荷试验方法,并对强度指标可能的变化进行初步分析.
During pit excavation, stress condition of soil has been changed, but shear strength indices determined by normal tri-axial loading test are still adopted in design. In this paper, normal tri-axial test method is briefly introduced and the characteristics of strength indices determined by such method are also analyzed. Then unloading test method which can be used to simulate the process of excavation is discussed and the possible reasons for the change of indices are tentatively analyzed.
出处
《河北工业大学学报》
CAS
2003年第5期31-34,共4页
Journal of Hebei University of Technology
基金
河北省自然科学基金资助项目(500045)
关键词
基坑开挖
土体抗剪强度指标
加荷试验
卸荷试验
pit excavation
shear strength indices of soil
loading test
unloading test
