| 饱和砂土动力特性的动三轴试验研究 |
| |
| 引用本文： | 王艳丽,胡勇. 饱和砂土动力特性的动三轴试验研究[J]. 地下空间与工程学报, 2010, 6(2) |
| |
| 作者姓名： | 王艳丽 胡勇 |
| |
| 作者单位： | 同济大学岩土及地下工程教育部重点实验室,上海,200092;同济大学地下建筑与工程系,上海,200092;湖州职业技术学院,浙江,湖州,313000 |
| |
| 摘 要： | 利用GDS 10 Hz/20 kN双向振动三轴系统,进行了一系列饱和砂土不排水动三轴试验,研究了不同固结围压对饱和砂土动力特性的影响。试验结果表明:动弹性模量随动弹性应变幅的增大而减小,随围压的增大而增大;阻尼比随动弹性应变幅的增大而增大,围压对阻尼比的影响不显著,动弹性应变比较低的情况下,阻尼比有随围压增大而减小的趋势;不同围压下砂土的动强度曲线可近似地归一,其振动孔压发展模式与Seed提出的砂土的振动孔压发展模式相同,可以用反正弦三角函数拟合。
|
| 关 键 词： | 围压 动弹性模量 阻尼比 动强度 动孔压 |
Dynamic Triaxial Testing Study on Dynamic Characteristics of Saturated Sands |
| |
| Wang Yanli,Hu Yong. Dynamic Triaxial Testing Study on Dynamic Characteristics of Saturated Sands[J]. Chinese Journal of Underground Space and Engineering, 2010, 6(2) |
| |
| Authors: | Wang Yanli Hu Yong |
| |
| Affiliation: | Wang Yanli1,2,Hu Yong3(1.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,China,2.Department of Geotechnical Engineering,3.Huzhou Vocational Technology College,Huzhou 313000,China) |
| |
| Abstract: | With the GDS 10Hz/20kN dynamic triaxial system,the undrained dynamic triaxial tests on the saturated sands are performed.The confining pressure effects on dynamic characteristics of the saturated sand are discussed.It is found that the dynamic elastic modulus decreases with the dynamic elastic strain increasing,but increases with the accretion of confining pressure.The damping ratio is not sensitive to the change of confining pressure,but it has the tendency to decrease as the accretion of confining pressur... |
| |
| Keywords: | confining pressure dynamic elastic modulus damping ratio dynamic strength dynamic pore water pressure |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
