水泥土小应变动力特性试验研究

杨芳

doi:10.13204/j.gyjz201304021

水泥土小应变动力特性试验研究

doi: 10.13204/j.gyjz201304021

杨芳

1.
温州大学建筑与土木工程学院,浙江温州 325035

基金项目:

浙江省自然科学基金项目(Y1110751)

详细信息

作者简介:
作者：杨芳, 女, 1965年出生, 副教授?电子信箱：yf3077@126.com

中图分类号: TU411.8
计量
- 文章访问数: 130
- HTML全文浏览量: 7
- PDF下载量: 78
- 被引次数: 0
出版历程
- 收稿日期: 2012-12-25
- 刊出日期: 2013-04-20

EXPERIMENTAL STUDY ON SMALL-STRAIN DYNAMIC PROPERTIES OF CEMENTED SOIL

Yang Fang

1.
College of Architecture and Civil Engineering,Wenzhou University,Wenzhou 325035,China?

摘要

摘要: 通过GDS共振柱，研究了不同围压、不同掺和比对水泥软黏土小应变动力特性(动剪切模量和阻尼比)的影响，得到了水泥软黏土小应变动力特性的变化规律。随着应变幅值的增加，动剪切模量逐渐衰减。最大动剪切模量随有效围压的增大而线性增大；在相同应变水平下，随着水泥土掺和比增大，有效围压对动剪切模量的影响逐渐减小。随着应变幅值的增加，阻尼比逐渐增大。相同应变水平下，试样的阻尼比随有效围压的增大而有轻微地减小。水泥掺和比对阻尼比的影响较小，随着水泥掺和比的提高，相同应变水平下试样的阻尼比有略微地升高。与动剪切模量相比阻尼比对有效围压和掺和比的变化不敏感。
- 水泥土 /
- 共振柱 /
- 小应变 /
- 动剪切模量 /
- 阻尼比
Abstract: The influence of confining and mixing ratio on small-strain dynamic properties(dynamic shear modulus and damping ratio)of cemented soft soil was studied through GDS resonance column, and the changing regularity of small-strain dynamic properties of cemented soft soil was obtained.The dynamic shear modulus decreased with the increased of strain amplitude.The maximum dynamic shear modulus increased linearly with the increase of confining pressure, the influence of confining pressure on dynamic shear modulus decreased with the increasd of mixing ratio under the same strain amplitude.The damping ratio increases with the increase of strain amplitude.Damping ratio decreased slightly with the increase of confining pressure.The influence of mixing ratios was damping ratio was small, damping ratio increased slightly with the increase of mixing ratio under the same strain amplitude.Comparing with the dynamic shear modulus, damping ratio was unsensitive to the variation of confining pressure and mixing ratio.
- Cemented soil /
- resonance column /
- small-strain /
- dynamic shear modulus /
- damping ratio ?

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