文献类型：期刊文献

中文题名：考虑轴平移技术系统误差的边坡稳定性分析

英文题名：Slope stability analysis considering systematic error of axial translation technique

作者：李慧[1];贾红晶[2];程学磊[3];桂超[4];潘林娜[2];张瑞敏[1]

第一作者：李慧

机构：[1]郑州工商学院建筑工程学院;[2]天津城建大学土木工程学院;[3]大连海事大学土木工程系;[4]新乡学院土木工程与建筑学院

第一机构：郑州工商学院建筑工程学院,河南郑州451400

年份：2017

卷号：34

期号：5

起止页码：495-500

中文期刊名：深圳大学学报：理工版

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD_E2017_2018】；

基金：国家自然科学基金资助项目(41472253);天津市自然科学基金重点资助项目(16JCZDJC39000);天津市建设系统科学技术发展计划资助项目(2016-25)~~

语种：中文

中文关键词：岩土力学;饱和度;渗透系数;土水特征曲线;边坡;塑性区

外文关键词：soil mechanics ; saturation; permeability coefficient; soil water characteristic curve ; side slope ; plasticzone

摘要：为分析非饱和土边坡的稳定性,研究了渗透系数与基质吸力的关系,考虑了饱和度对渗透系数的影响,建立了非饱和土不同强度下的土-水特征曲线(soil water characteristic curve,SWCC).利用Abaqus有限元模拟软件分别模拟了轴平移技术实测的SWCC和应用修正计算方法修正的SWCC,分析了坡内孔隙水压力变化、坡体变形和坡内塑性区出现的区域.研究表明,直接应用轴平移技术测试的SWCC进行边坡稳定性分析时,得到的坡内土体变形、等效塑性区较实际情况偏小,土的真实强度将被放大,存在安全隐患;应用SWCC修正计算方法,更接近边坡内土体的实际情况,并能降低工程隐患.
In order to analyze the stability of unsaturated soil slope,we investigate the influence of saturation on permeability coefficient. We establish the relationship between the soil water characteristic curve（ SWCC） and the unsaturated soil strength under the consideration of the permeability coefficient and matric suction. Using Abaqus finite element simulation software,we compare the SWCC measured by axial translation technique and modified calculation method,and analyze pore water pressure,the slope position,slope deformation,and the plastic zone of the slope. The results show that the direct analysis of slope stability by SWCC with axial translation technique will give smaller slope deformation and smaller equivalent plastic zone than those of the real situation,and the real strength will be exaggerated. So there exists a security problem. The application of SWCC with correction calculation method can better grasp the real situation in the slope soil and reduce the engineering hidden trouble.