基于区间集对势的土体胀缩性评价模型

A novel evaluation model for swelling-shrinkage grade of soil mass based on interval potential of set pair

文章应用区间数和集对分析耦合理论,探讨了膨胀土与石灰改良土的胀缩性区间集对势评价模型。该模型首先基于区间数表达实测指标和评价标准,进而转换为联系数,以计算集对势及构建评价标准的区间集对势,进而统一分析样本与评价标准间的同异反关系态势与判定样本的胀缩性等级。结果表明,该模型应用于膨胀土和石灰改良土胀缩性评价是有效可行的,且能充分表达评价指标区间动态变化特点和从势角度分析胀缩性转换态势,并解决了区间数难于对比分析的难题,也为其他类似不确定性问题分析提供了参考。

Based on the interval number theory and set pair analysis, the evaluation model for the swelling-shrinkage behaviors of expansive soil and lime improved soil using interval potential of set pair was discussed. Firstly, interval numbers were utilized to express the variable evaluation indica-tors and classification standard？ and were transferred into connection numbers in order to calculate the interval potential of set pair consisting of the measured indicators and boundary points of classification standard. Then the identity- discrepancy-contrary state relationship between the saas well as the swelling-shrinkage grade of the sample was determined. The results show that the pro-posed model？ which overcomes the defect of the traditional methods which have difficulty with the comparison among interval numbers,is effective and feasible,and can fully express the changes in the evaluation indicators and depict the transformation of swelling-shrinkage grade from a perspective of connection potential. tt also provides a reference for other similar uncertaint