PS加固黄土力学特性试验研究  

Test study of mechanical properties of loess reinforced by PS

作　　者：刘海宁[1] 于怀昌[1] 刘汉东[1] 王思敬[2] 王四巍[1] 

机构地区：[1]华北水利水电学院岩土工程与水工结构研究所,郑州450011 [2]中国科学院地质与地球物理研究所,北京100029

出　　处：《岩土力学》2009年第S2期93-96,113,共5页Rock and Soil Mechanics

基　　金：华北水利水电学院高层次人才科研启动项目(No.200833);河南省基础与前沿技术研究项目(No.092300410053)支持项目

摘　　要：通过对不同含水率、不同密度的黄土PS加固前后的直接剪切试验和渗透试验研究,认为PS加固效果受土体的初始含水率、密度的影响明显。对相同干密度、不同含水率下的PS加固效果进行研究表明,含水率为9%左右时强度提高效果最显著。同一干密度的土体,随着含水率的变化,土的渗透性能呈现非线性的变化。试验表明,含水率在8.5%～11%之间时,PS加固土体效果最好。The reinforcing effect with PS shows that the initial water content and density of loess have influences on test result through the direct shear test and seepage test.It can be easily found through the test with various water contents and different densities samples.The results show that the strength can be enhanced evidently with the 9% water content sample,when all the samples have the same density.But the seepage tests have a different results that the permeability varies nonlinearly with the water content.It is found that the PS has the best reinforced effect when the water content varying between 8.5% and 11%.

关 键 词：黄土 直接剪切试验 渗透试验 PS 

分 类 号：TU411.7[建筑科学—岩土工程]