砂卵石土动强度的试验研究

贾彬; 王汝恒

doi:10.13204/j.gyjz200605019

砂卵石土动强度的试验研究

doi: 10.13204/j.gyjz200605019

贾彬¹,
王汝恒²

1.
1. 西南科技大学土木工程与建筑学院绵阳 621010;
2.
2. 重庆大学土木工程学院重庆 430045

基金项目:

四川省教育厅重点科研项目(编号:2003A111)

详细信息

中图分类号: TU435
计量
- 文章访问数: 63
- HTML全文浏览量: 7
- PDF下载量: 181
- 被引次数: 0
出版历程
- 收稿日期: 2005-11-18
- 刊出日期: 2006-05-20

DYNAMIC CHARACTERISTICS OF SANDY PEBBLE SOIL

Jia Bin¹,
Wang Ru-heng²

1.
1. College of Civil Engineering and Architecture,Southwest University of Science and Technology Mianyang 621010;
2.
2. College of Civil Engineering,Chongqing University Chongqing 430045

摘要

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。
- 砂卵石土 /
- 动三轴试验 /
- 动弹性模量 /
- 动阻尼比
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 rule 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.
- sandy pebble soil /
- dynamic triaxial test /
- dynamic modulus /
- damping ratio

HTML全文

参考文献(6)

韩国城, 孔宪京. 天生桥面板堆石坝堆石料动力变形特性研究./ 七五0国家科技攻关项目报告. 大连: 大连理工大学土木工程系抗震教研室,1998

孔宪京, 韩国城. 高土石坝坝料及地基动力工程性质研究: 粗粒料动应力-应变关系试验研究./ 八五0国家科技攻关(85-208-02-04-1-08) 项目报告. 大连: 大连理工大学土木工程系, 1994

吴兴征, 栾茂田, 辛军霞. 堆石料的动力剪切模量和阻尼比的三参数经验关系./ 九五0国家科技攻关项目报告. 大连: 大连理工大学土木工程系, 2000

蒋关鲁. 大型三轴试验Kg p 7 ?N 变形强度特性: [博士学位论文]. 东京: 东京大学, 1996

Rollins K M, Evans M D. Shear Modulus and Damping Relationships forGravels. Journal of Geotechnical and Geoenvironmental Engineering,ASCE, 1998, 124(5): 396-405

KokushoT, Tanaka Y. Geotechnical Dynamic Properties of Gravel LayersInvestigated by In-Situ Freezing SampingPPGround Failures under SeismicConditions. Geotechincal Special Publication, ASCE, 1993(44):121-140

施引文献

资源附件(0)

访问统计