| 一种饱和粉质黏土的热固结特性试验研究 |
| |
| 引用本文： | 白冰,苏钟琴,杨海朋.一种饱和粉质黏土的热固结特性试验研究[J].岩土力学,2012,33(1):12-16. |
| |
| 作者姓名： | 白冰 苏钟琴 杨海朋 |
| |
| 作者单位： | 北京交通大学 土木建筑工程学院，北京 100044 |
| |
| 基金项目： | 国家自然科学基金资助项目(No.50978022);中央高校基本科研业务费专项基金资助项目(No.2011YJS248) |
| |
| 摘 要： | 采用自行研制的温度控制固结试验装置对一种饱和粉质黏土的热固结特性进行室内试验。研究表明，在不同的有效固结压力作用下饱和试样的孔隙水压力变化趋势以及固结体应变变化趋势类似。在温度升高过程中，由温度导致的孔隙水压力不断增大，当温度达到设定温度时，试样内的孔隙水压力也达到峰值，而且随着有效固结压力的增大，孔隙水压力峰值似乎略有增大。此外，温度升高后的固结排水量远大于温度再降低后的吸水量，亦即经过升温和降温过程，试样总体产生明显的收缩变形。
|
| 关 键 词： | 粉质黏土 热固结 升温过程 收缩效应 |
| 收稿时间： | 2011-05-27 |
Experimental study of thermal consolidation of a saturated silty clay |
| |
| BAI Bing
,
SU Zhong-qin
,
YANG Hai-peng.Experimental study of thermal consolidation of a saturated silty clay[J].Rock and Soil Mechanics,2012,33(1):12-16. |
| |
| Authors: | BAI Bing SU Zhong-qin YANG Hai-peng |
| |
| Institution: | School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China |
| |
| Abstract: | The consolidation characteristics of a saturated silty clay under thermal loading are discussed.Test results show that,for various confining pressures,the evolution patterns of whether pore pressure or volumetric strain is similar.In the process of temperature rising,the pore pressure increases continually with elapsed time,and the pore pressure also reaches to a peak pore pressure(or a steady value) when the specimen is heated to a required higher temperature value.Furthermore,this peak pore pressure increases as the confining pressure increases.Besides,the consolidation volumetric strain(i.e.,shrinkage deformation) by heating is greater than the volumetric strain(i.e.,expansion deformation) by cooling;in other words,the specimen totally takes on a shrinkage effect after a complete process of heating and cooling. |
| |
| Keywords: | silty clay thermal consolidation temperature rising process shrinkage effect |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
