| 砂卵石土动强度的试验研究 |
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| 引用本文： | 贾彬,王汝恒.砂卵石土动强度的试验研究[J].工业建筑,2006,36(5):71-73,39. |
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| 作者姓名： | 贾彬 王汝恒 |
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| 作者单位： | 西南科技大学,土木工程与建筑学院,绵阳,621010;重庆大学,土木工程学院,重庆,430045 |
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| 摘 要： | 通过对砂卵石土室内动三轴试验,对饱和砂卵石土的动力特性进行了较为深入地研究。主要分析不同围压、不同固结比和不同振动频率对砂卵石土的动荷载影响的变化规律。试验结果表明,砂卵石土呈现出动弹性模量随动应变的增大而非线性地降低,动荷载频率对动弹性模量影响很小,动弹性模量随着固结比的增大而显著增大的规律。同时,砂卵石土的阻尼比具有随动应变增大而增大,随着围压或固结比的增加而减小的变化规律。
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| 关 键 词： | 砂卵石土 动三轴试验 动弹性模量 动阻尼比 |
| 收稿时间： | 2005-11-18 |
| 修稿时间： | 2005-11-18 |
DYNAMIC CHARACTERISTICS OF SANDY PEBBLE SOIL |
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| Jia Bin,Wang Ruheng.DYNAMIC CHARACTERISTICS OF SANDY PEBBLE SOIL[J].Industrial Construction,2006,36(5):71-73,39. |
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| Authors: | Jia Bin Wang Ruheng |
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| Affiliation: | 1 College of Civil Engineering and Architecture,Southwest University of Science and Technology Mianyang 621010; 2 College of Civil Engineering, Chongqing University Chongqing 430045 |
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| Abstract: | Through laboratory tests on sandy pebble soil by using the dynamic triaxial test, researches of saturated sandy pebble soil have been done. It was analyzed the nile of the dynamic characters of sandy pebble soil under different confining pressure, consolidation ratio and vibration frequency. The result shows that the dynamic modulus of sandy pebble soil reduces nonlinearly with the accretion of dynamic strain, but increases with consolidation ratio, and affected little by the vibration frequency. In addition, the research also makes it clear that damping ratio markedly rises with the augmentation of dynamic strain, and falls as the enhance of confining pressure or consolidation ratio. |
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| Keywords: | sandy pebble soil dynamic triaxial test dynamic modulus damping ratio |
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