[1]洪小星,陈国兴,孙田,等.砂砾土动力特性的室内试验研究进展[J].世界地震工程,2011,(01):047-53.
 HONG Xiaoxing,CHEN Guoxing,SUN Tian,et al.Research progress of labrotory tests on the dynamic characteristics of gravel soil[J].,2011,(01):047-53.
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砂砾土动力特性的室内试验研究进展
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《世界地震工程》[ISSN:/CN:]

卷:
期数:
2011年01期
页码:
047-53
栏目:
出版日期:
2011-03-09

文章信息/Info

Title:
Research progress of labrotory tests on the dynamic characteristics of gravel soil
作者:
洪小星 陈国兴 孙田 王炳辉
南京工业大学岩土工程研究所, 江苏 南京 210009
Author(s):
HONG Xiaoxing CHEN Guoxing SUN Tian WANG Binghui
Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009, China
关键词:
砂砾土动力特性动三轴含砾量动剪切模量阻尼比液化抗液化强度振动孔压
Keywords:
gravel soildynamic characterisricsdynamic triaxial testgravel contentdynamic shear modulusdamping ratioliquefactionliquefaction resistancedynamic pore water pressureliquefaction evaluation methool
分类号:
TU435;P315.98
摘要:
简要回顾了国内外有关砂砾土动剪切模量和阻尼比的试验研究进展,总结了围压、固结比、颗粒形状、含砾量、颗粒破碎等因素对砂砾土动剪切模量、阻尼比及归一化动剪切模量比与阻尼比曲线特征的影响规律,发现砂砾土归一化动剪切模量比和阻尼比的曲线形状主要受围压大小的影响,其他因素的影响不明显;总结了砂砾土抗液化强度、振动孔压发展特征、液化判别方法方面的研究进展,含砾量、试样扰动、膜贯效应是影响砂砾土抗液化强度的主要因素;指出了砂砾土动力特性研究中存在的问题及今后应予以更深入关注的研究方向。
Abstract:
On the basis of many studies on the dynamic shear modulus and damping ratio of gravel soil reported in the literatures,this paper summaries the influence factors including the confining pressure,the consolidation ratio,the particle shape,the gravel contents and the particle breakage.It is found that the normalized dynamic shear modulus and damping ratio of gravel soil are mainly influenced by the confining pressure.Other influence factors have a little impact on them.Moreover,the liquefaction characteristics of gravel soil are concluded including the liquefaction resistance,the development characteristics of dynamic pore water pressure and the liquefaction evaluation method.The major factors that influence liquefaction resistance of gravel soil include the gravel contents,the sample disturbance and the membrane penetration effect.Finally,this paper indicates the existing problems about the research on the dynamic characteristics of gravel soil and points out the research topics that more attention should be paid to.

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备注/Memo

备注/Memo:
收稿日期:2011-1-7;改回日期:2011-1-26。
基金项目:国家自然科学基金项目(51079067);国家交通运输部西部科技项目(2009318225100)
作者简介:洪小星(1985- ),男,硕士研究生,主要从事土动力特性研究.E-mail:richine001@163.com
通讯作者:陈国兴(1963- ),男,教授,博士,主要从事土动力学与岩土地震工程研究.E-mail:gxchen@njut.edu.cn
更新日期/Last Update: 1900-01-01