基于联系期望的膨胀土和改良土胀缩性评价模型

膨胀土和石灰改良膨胀土的胀缩性评价,受分析指标不确定性的多样性和动态可变性与人类思维的局限性影响与控制,是一个极其复杂的难题。应用区间数理论与集对分析耦合方法,提出了基于联系期望概念的膨胀土和石灰改良土胀缩性评价新模型,以统一刻画区间形式胀缩性评价指标的确定性和不确定性及演化态势。实例应用及与其他方法对比分析结果表明,该模型应用于膨胀土和石灰改良膨胀土胀缩性评价是有效可行的,且能简化区间数关系的分析过程,此也为其他类似不确定性问题提供了新的参考。

A novel evaluation model based on connectional expectation for swelling-shrinkage grade of untreated and treated expansive clay

Evaluation of swelling-shrinkage grade for untreated and treated expansive clay is a complex system problem since it involves the uncertainty of human thinking, multiple types and variations of influence factors. Based on the interval number theory and coupling analytical method of set pair analysis, evaluation indices and classification standard are first described in interval numbers. Then connectional expectation and an analytical model are proposed to interpret the certainty and uncertainty, and evolvement trend of swelling-shrinkage grade in a unified way. The results from practical application and comparison with other methods show that the proposed model is feasible and reliable, and simplifies the analytical process of interval number relationship. It also serves as a reference method for other similar problems.