摘要
本文介绍了应用日制DTC-240通用大型三轴仪测定原状黄土动剪切模量及阻尼比的试验成果,並用统计方法分析了黄土动应力—应变的关系,提高了参数的准确性。本文还改进了根据土的物理特性计算动剪切模量的修正公式,指出不同固结比与固结压力对阻尼比的显著影响,找出了阻尼比的变化规律与原状土结构的内在关系。
The dynamic shear modulus and damping ratio are important parameters in earthquake engineering and other dynamic analyses. In this paper, the experimental research on dynamic shear modulus and damping ratio of loess with the DJC-240 triaxial test apparatus was introduced by statistic method and the accuracy of the parameters was improved. The revisionary formula for calculating dynamic shear modulus based on physical properties of soil was presented. The authors have pointed out the obvious influence of damping ratio due to different consolidation ratio and consolidation pressure. The essential correlation between damping ratio and the construction of loess was found.
出处
《西北地震学报》
CSCD
1990年第4期60-68,共9页
Northwestern Seismological Journal
