水利水电技术2017，Vol.48Issue(1)：128-132,5.DOI:10.13928/j.cnki.wrahe.2017.01.024
基于微结构指标响应曲面法的固化盐渍土力学特性分析
Analysis on mechanical properties of solidified saline soil with microstructure index-based response surface methodology
摘要
Abstract
The relationship between the mechanical strength indexes of solidified saline soil and its structure change is an important problem within the study made on the characteristics of saline soil.The relevant experiment is made with response surface methodology by selecting particle size fractal dimension Dps,particle orientation fractal dimension Ddi,equivalent diameter De as the experimental factors.As the mechanical characteristic indexes of the solidified soil can be analyzed and predicted by the response surface model,the relationship between the mechanical strength indexes of the lime-solidified saline soit and its optimal parameters of the microstructure is studied with this model,and then is verified as well.The result shows that the unconfined compressive strength of q reaches to 1.636 MPa and is only different from the measured value by 0.038 MPa,the cohesion c is 456.7 kPa and fully coincides with the measured one and the internal friction angle φ is 39.6°and is only different from the measured one by 0.2° for the solidified soil,when the optimal indexes of the solidified soil microstructure are 0.8 for the particle size fractal dimension Dps,0.93 for the particle orientation fractal dimension Ddi and 1.75 for the equivalent diameter De respectively.This model provides a reference and basis for the study on the correlation among all the physical and chemical indexes,all the proportions of the mixtures and the solidified soil microstructures of all kinds of the solidified saline soil.关键词
固化盐渍土/微结构指标/响应曲面法Key words
solidified saline soil/microstructure index/response surface methodology分类
建筑与水利引用本文复制引用
赵海艳,张渊,苏春宏..基于微结构指标响应曲面法的固化盐渍土力学特性分析[J].水利水电技术,2017,48(1):128-132,5.基金项目
国家自然科学基金项目(51579158) （51579158）
