含粘粒砂土抗液化性能的试验研究

衡朝阳; 何满潮; 裘以惠

含粘粒砂土抗液化性能的试验研究

1.
中国矿业大学北京校区岩土工程研究所,北京100083;
2.
太原理工大学建筑工程学院,太原030024

详细信息

作者简介:
衡朝阳(1967-), 男, 在读博士, 高级工程师, 从事岩土工程测试与科研工作

中图分类号: TU441.5
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- 被引次数: 0
出版历程
- 收稿日期: 2000-11-24
- 修回日期: 2001-04-06
- 刊出日期: 2001-12-22

EXPERIMENTAL STUDY OF LIQUEFACTION-RESISTANT CHARACTERISTICS OF CLAYEY SAND

1.
China University of Mining and Technology, Beijing 100083;
2.
Taiyuan University of Technology, Taiyuan 030024

摘要

摘要: 通过对含粘粒砂土所作的试验研究, 包括: 粘粒矿物成分不同、粘粒含量不同的重塑土样所作的室内动三轴试验; X光衍射试验, 试验结果对比分析后, 得出了含粘粒砂土抗液化性能的特性。并得出以下结论: (1)粘粒矿物成分不同, 也引起砂土动力稳定性的变化; (2 )动剪应力强度与粘粒含量并非呈单调增加关系, 而呈抛物线型, 并给出回归方程; (3)含粘粒的砂土, 其抗液化能力最低点总是在粘粒含量 8.5～ 9.5 %之间。
- 抗液化性能 /
- 粘粒含量 /
- 粘粒矿物成分 /
- 动三轴试验 /
- 砂土
Abstract: Presented in this paper are the results of experimental study and analysis of liquefaction characteristics of clayey sand .The laboratory tests on soil samples after prepared with the same dry density and different clay mineralogical composition and different content of clay particles were so as to determine the main parameters which affect the liquefaction behaviour of clayey sand .The tests were performed run on DSD-200 type dynamic triaxial device. X-ray diffraction analysis was also performed. By comparison of the obtained data, the following conclutions are drawn out: (1) the liquefaction-resistant characteristic of clayey sand varies with different clay mineralogical composition; (2)the relation between the dynamic shear strength and the clay particles is not monotonous, but is parabolic and a regression equation for the parabola is given presented by the authors;(3)when the clay particle content is between 8.5～9.5%, the clayey sand is weakest liquefaction-resistant.
- Liquefaction-resistant behaviour /
- Clay particle content /
- Clay mineralogical composition /
- Dynamic triaxial test /
- Clayey sand

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