- 责任者：Huang Rui (College of Construction Engineering ; Jilin University ; Changchun 130026 ; China) ; Zhang Yanjun
- 刊名：Journal of Jilin University
- 出版年：2010
- 卷期：40(5)
- 关键词：软土 ; soft clays ; 动三轴试验 ; shaking triaxial tests ; 辽宁 ; Liaoning Province
- 页码：p.1115-1120
- 图表：3 illus., 6 tables, 18 refs.
- 分类号：1702
- issnNo：ISSN1671-5888
- isbnNo：CN22-1343/P
To study the delta deposit soft soil’s dynamic characteristics of Liaohe, procedures of the dynamic triaxial tests under the consolidation pressure of 100, 200, and 300 kPa with the fixed seismic frequency of 0.1 Hz is carried out. Relationship between the dynamic strain εd, the dynamic intensity σd, the load cycle-index and the dynamic shear strain rd under the different consolidation pressure is analyzed. The results show that under the conditions of fixed seismic frequency and identical consolidation ratio K, the dynamic intensity σd and load cycle-index have favorable linearity in the odd logarithm coordinate system. The dynamic shear modulus Gd increases with the dynamic shear strain rd increment and the damping ratio D diminishes with the dynamic shear strain rd increment. The correlations of Gd and rd, D and rd have characteristics of segmentation in the rectangular coordinates, and the value of strain presents more inflexions between 4.0% and 5.4%.Dynamic strain indexing of soft soil is significantly lower than other types of soft soil. And the relations of damping ratio and the shearing strain is different from other types of soft soils, which have two inflection points, this kind of soft soil only exists one inflection point in rd=2×10-3.