水利水电技术2017，Vol.48Issue(5)：128-135,8.DOI:10.13928/j.cnki.wrahe.2017.05.020
软弱土质类相似材料的配比试验结果分析
Analysis of results of the mixture ratio test of soft soil similar material
摘要
Abstract
By taking laundry detergent and plaster as the cementing agents,sand as the coarse aggregate,barite powder as the fine aggregate and bentonite as the regulator,the similar material of soft soil in the geomechanical model test is prepared through an orthogonal test,and then the laws of the impacts from the factors of aggregate-cement ratio,laundry detergent-plaster ratio,barite powder content,bentonite mixture ratio,water content,etc.on the parameters of the density,cohesion,internal friction angle,compression modulus,Poisson ratio,etc.of the similar material are studied,while the sensitivities and significances of all the factors are analyzed with the range analysis and the variance analysis methods.The results show that the results from both the methods have better consistency,from which reasonable judgments on the importance degrees of the impact-indexes of all the factors can be made,i.e.the bentonite mixture ratio is the dominative factor for the parameters of the density and Poisson ratio of the similar material,which also has a significant impact on the cohesion and internal friction angle,but no any obvious impact on the compression modulus;the density,internal friction angle and Poisson ratio of the similar material present reducing trends along with the increase of the bentonite mixture ratio,while the cohesion is to be significantly increased;impact from the laundry detergent-plaster ratio on the index of the compression modulus is more obvious,but not larger on the other parameters.;the impact from the water content on the compression modulus is the largest,and then is less on the indexes of both the density and the Poisson ratio.Finally,the empirical equations for the mixture ratio of the similar materials are obtained through the multivariable linear regression analvsis made with MATLAB.关键词
相似材料/模型试验/配合比/极差分析/方差分析Key words
similar material/model test/mixture ratio/range analysis/variance analysis分类
建筑与水利引用本文复制引用
窦远明,王建宁,朱旭曦,魏明..软弱土质类相似材料的配比试验结果分析[J].水利水电技术,2017,48(5):128-135,8.基金项目
国家自然科学基金(61503201) （61503201）
河北省在读研究生创新资助项目(CXZZBS2017033) （CXZZBS2017033）
