| 细粒含量对饱和砂土动孔压演化特性的影响 |
| |
| 引用本文： | 王艳丽,饶锡保,潘家军,王勇.细粒含量对饱和砂土动孔压演化特性的影响[J].土木与环境工程学报,2011,33(3):52-56. |
| |
| 作者姓名： | 王艳丽 饶锡保 潘家军 王勇 |
| |
| 作者单位： | 王艳丽,WANG Yan-li(长江科学院水利部岩土力学与工程重点实验室,武汉430010;同济大学岩土及地下工程教育部重点实验室,上海200092);饶锡保,潘家军,RAO Xi-bao,PAN Jia-jun(长江科学院水利部岩土力学与工程重点实验室,武汉,430010);王勇,WANG Yong(中国科学院武汉岩土力学研究所岩土力学与工程国家重点试验室,武汉,430071) |
| |
| 基金项目： | 国家"十一五"科技支撑项目，长江科学院中央级公益科研院所基本科研业务费项目 |
| |
| 摘 要： | 利用GDS循环三轴仪,对不同细粒含量砂土进行了不排水动三轴液化试验,并基于Seed孔压应力模型,研究了细粒含量对液化进程中动孔压演化特性的影响。研究结果表明：细粒含量对砂土孔压发展影响较大,其影响主要体现在孔压发展模式参数θ的不同。含细粒砂土中细粒含量与孔压参数θ的关系不是呈单调的线性关系。参数θ先随着细粒含量的增加而减小,并在细粒含量为30%时达到最小值,之后随着细粒含量的增加又逐渐增加,不同的是参数θ在细粒含量超过30%后,其增加的趋势相对平缓。通过对不同细粒含量砂土动孔压演化特性试验研究,更进一步证明了临界含量的存在,试验所用的含细粒砂土,临界细粒含量在30%左右。
|
| 关 键 词： | 细粒含量 饱和砂土 动孔压 动三轴试验 |
| 收稿时间： | 2010/12/20 0:00:00 |
Effects of Fines Content on Evolutionary Characteristics of Dynamic Pore Water Pressure of Saturated Sands |
| |
| WANG Yan-li,RAO Xi bao,PAN Jia jun and WANG Yong.Effects of Fines Content on Evolutionary Characteristics of Dynamic Pore Water Pressure of Saturated Sands[J].Journal of Civil and Environmental Engineering,2011,33(3):52-56. |
| |
| Authors: | WANG Yan-li RAO Xi bao PAN Jia jun and WANG Yong |
| |
| Affiliation: | 1.Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010,P.R.China;2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,P.R.China;3.State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,P.R.China) |
| |
| Abstract: | With the GDS dynamic triaxial system,undrained dynamic triaxial tests on the saturated sand with different fines content are performed,and the effects of fines content on evolutionary characteristics of dynamic pore water pressure of saturated sands in the process of liquefaction are analyzed based on Seed pore water pressure stress model.It is found that fines content has great effect on the dynamic pore water pressure of saturated sands by the parameter θ for Seed model.The relationship between parameter θ and fines content isn＇t linear.Parameter θ decreases with the increase of fines content at first,and then reaches its smallest value when the critical value of fines content is 30%.After that,parameter θ increases gradually with the rise of fines content.According to the experimental study on effects of fines content on evolutionary characteristics of dynamic pore water pressure of saturated sands,the existence of critical fines content with 30% is further proved in the sandy soil used in the test. |
| |
| Keywords: | fines content saturated sands dynamic pore water pressure dynamic triaxial test |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《土木与环境工程学报》浏览原始摘要信息 |
|
点击此处可从《土木与环境工程学报》下载全文 |
|
