文献类型：期刊文献

中文题名：基于轴平移技术测试方法的误差修正与评估

英文题名：Error correction and evaluation for axis translation test technique

作者：潘林娜[1];李顺群[1];贾红晶[1];桂超[2]

第一作者：潘林娜

机构：[1]天津城建大学土木工程学院;[2]新乡学院土木工程与建筑系

第一机构：天津城建大学土木工程学院,天津300384

年份：2017

卷号：34

期号：3

起止页码：259-264

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资助项目(16JCZDJC39000);天津市建设系统科学技术项目发展计划资助项目(2016-25)~~

语种：中文

中文关键词：土力学;轴平移技术;非饱和土;张力计;含水率;基质吸力;土-水特征曲线;误差评估

外文关键词：soil mechanics ; axis translation test technique ; unsaturated soil; tensiometer; water content; matrixsuction; soil water characteristic curve; error evaluation

摘要：为完善轴平移技术在非饱和土应用中的局限性,根据轴平移测试技术误差的产生机理,提出修正轴平移测试技术在量测土-水特征曲线(soil water characteristic curve,SWCC)误差的计算方法.结合张力计的测试结果,采用误差评估理论评估该方法的准确性.研究表明,应用轴平移测试技术量测的土-水特征曲线中各基质吸力所对应的含水率减去填充水所占的含水率,可得到修正后的含水率,有效降低了轴平移技术测试SWCC的系统误差.该方法的修正效果随着基质吸力的增大而更加明显,适合修正高基质吸力时的土-水特征曲线.
In order to improve the limitations of the application of axial translation technique in unsaturated soils, based on the mechanism of the experimental error of axis translation test technique, we propose a reasonable and simple calculation method to correct the error of the measurement of soil water characteristic curve （SWCC） and improve the accuracy of the application of axis translation technique. Combining with the tensiometer test results, we use the error evaluation theory to evaluate the results of the modified calculation method. We find that the modified water content can be obtained by the water content corresponding to each matric suction of SWCC, which is measured by axis translation technique, subtracting the water content of filling water. This greatly reduces the system error of axis translation test technique for SWCC. The effect of correction method is more obvious with the increase of matrix suction force. The method is more suitable for the correction of high matrix suction.