砂卵石土在动荷载作用下的阻尼比研究

张誉; 王汝恒; 贾彬

doi:10.13204/j.gyjz200804016

砂卵石土在动荷载作用下的阻尼比研究

doi: 10.13204/j.gyjz200804016

1.
西南科技大学土木工程与建筑学院,绵阳 621010

基金项目:

四川省教育厅重点科研项目(2003A111)

详细信息

作者简介:
张誉,男,1972年2月出生,硕士讲师.E-mail:zhangyu@swust.edu.Cn

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- 文章访问数: 84
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- 被引次数: 0
出版历程
- 收稿日期: 2007-09-12
- 刊出日期: 2008-04-20

STUDY ON DAMPING RATIO OF SANDY PEBBLE SOIL SUBJECTED TO DYNAMIC LOADING

1.
Southwest University of Science and Technology,Mianyang 621010

摘要

摘要: 通过对砂卵石土的室内动三轴试验,对饱和砂卵石土的阻尼比动力参数进行深入的研究。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阻尼比影响的变化规律。试验结果表明,动应变对阻尼比有显著影响,阻尼比随着动应变的增大而增大,但随着围压或固结比的增加而减小,同时,阻尼比具有随振动频率的增大而减小的变化规律。
- 砂卵石土 /
- 动三轴试验 /
- 阻尼比
Abstract: Through laboratory tests on sandy pebble soil by using the dynamic triaxial test, studies of saturated sandy pebble soil was done. It is analyzed the rule of the damping ratio of sandy pebble soil under different confining pressure, consolidation ratio and vibration frequency. The research makes clear that damping ratio markedly rises with the augmentation of dynamic strain, and falls as the enhance of confining pressure or confining pressure ratio. In addition, result also shows that damping ratio reduces with the accretion of vibration frequency.
- sandy pebble soil /
- dynamic triaxial test /
- damping ratio

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参考文献(8)

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